Herbicide Contamination?

Sunflowers stunted by herbicide contamination.

(Re-posted from Spring 2017) Hi folks! It's been a long time since we posted anything new. We've been feeling challenged by a number of things and will write a more comprehensive post soon but wanted to get word out about a situation we had with many of the 'starts' we planted from seed this spring. Many of them were severely stunted or died from what appears to be herbicide contamination in our potting soil (which we made from combining last summer's compost and some composted horse manure).

We're posting this to our site in the hopes that people reading our posts about the deep mulch method of gardening and folks using grass clippings, animal manures, or hay or straw for mulch, or to build their compost piles will use discretion in acquiring those materials. Some herbicide chemicals can remain toxic for several years in plant materials and manure.

Herbicide-contaminated tomato plants

We always knew that farming chemicals can have damaging and long-lasting effects in the environment but didn't think we would be effected as we use no chemicals directly on our lawns or gardens.

It is ironic that, after championing the use of "local", organic materials to create garden fertility (instead of imported, concentrated fertilizers that are often mined and produced unsustainably) that we experienced such devastating results.

Of the hundreds of tomato and pepper seeds we started this year, not a single one was unaffected and all had to be thrown out!

If you are still using chemicals to fight weeds, we urge you to stop. Herbicide contamination is another reason to only eat organic foods as they minimize the use of these chemicals in our environment.

Here are links to two excellent articles we found on the topic:

(LINK) - Gardener Alert! Beware of Herbicide- Contaminated Compost and Manure

(LINK) - Herbicide Carryover in Hay, Manure, Compost, and Grass Clippings

We encourage you to do research of your own and share your comments below if you have relevant experiences.

Here are the details of our situation:

Right from the start, some of our seedlings did great but other varieties would do fine until they began putting on their second set of leaves and the leaves would begin curling in a distorted manner, never fully unfurling so the plants couldn't photosynthesize (get energy from the sun). We also noticed that some of the plants formed gold-colored nodules right below the soil-level where the roots begin to branch and on their root tips.

Onion starts did fine!

Some of our seedlings did fine:

• cabbages and kales
• cucumbers, squash and melons 
• onions
• artichokes

 But many of them did poorly or died altogether:

• tomatoes
• peppers
• peas, beans
• lettuce
• sunflowers, zinnias, marigolds

In many cases we started seeds three, and four times. It took us awhile to discover the likely source of our plant failures. For several months we thought our plants were suffering because it was so cool, wet and overcast; the Pacific NW - where we live, set records both for rainfall, and consecutive days of cloud-cover this past winter and spring. Plants sometimes develop a condition called "damping off" - (LINK) where they rot at the soil-level. 

Starting seedlings - before we knew our soil was contaminated.

After an on-line search, we found the articles listed above that outline the symptoms we were experiencing and they attributed the problems to soil contamination from a class of herbicides commonly used on golf-courses and other large public lawns, and on fields that are destined to be planted in grass-seed, livestock and horse-feed, and grain crops (such as wheat). These herbicides target broad-leaved weeds but do not kill grasses and grains. We haven't had our soil tested so we can't be sure but we feel it is likely that the wheat-straw we purchased to mulch our garden and build up our compost-piles might have been tainted with one of the products listed in the article (Clopyralid and aminopyralid, or something similar). It is also possible that one of the loads of composted horse manure that was donated had not been composted long enough and still contained herbicide residue.

OSU students sifting compost and manure to make potting soil.

Compost Contamination: This is the first year in the Sharing Gardens that we made our own potting soil. We've always purchased it in the past. For many years Chris has had experience making his own potting mix (prior to the Sharing Gardens) and always had good success with it. Last summer (2016) we made a huge amount of compost. It was made primarily from grass-clippings, wheat straw and leaves. For the first time since starting the gardens, we had enough excess compost after planting Fall crops, to save it for making potting soil.

Our recipe:

•  2-parts of our compost
•  1-part of composted horse manure/sawdust and 
•  a small amount of coffee grounds.

We don't know if the contamination came from manure that wasn't composted long enough or the wheat-straw we used to build our compost pilesl. We've checked with all the people who have donated large quantities of grass-clippings and none of them used any herbicides last year on their lawns so we feel confident that grass-clippings were not the source.

The reason we think it was our potting soil that was contaminated is that none of our seeds planted directly in the ground showed any of these same signs of distress.

Compost bins(left) and grass-piles (center) for garden fertility.

Note:

• Do not use contaminated compost or manures to make "compost tea" if you are going to be pouring it on any of the families of plants listed above. In addition, potatoes (in the same family of plants as tomatoes, peppers, eggplant and tomatillos - solanacea should not be grown in contaminated soil or had tea applications. Lettuce may also be susceptible).

• Some chemicals can remain active in the soil. compost or manure for two years or more.

• They can harm vegetable and flower plants in concentrations as low as 3 parts-per-million!

• While it is unlikely that enough of these chemicals would be present in lawn clippings from a residential source to contaminate your compost or mulch-pile, there are several herbicides available from garden-stores that do contain aminopyralid or clopyralid.

      -- Here is a list of herbicides and their active ingredients organized by trade names.

      -- Here is an alphabetical list of herbicidal active ingredients, with trade names following.

We encourage you to do research of your own and share your comments below if you have relevant experiences.

Carrots (front) and nasturtiums (back) are thriving this year!

Once we discovered the source of our plants' distress, we bought some regular potting mix and have successfully started lettuce and most of our flowers. It's too late to start peppers and tomatoes.  The only pepper plants we have are ones we purchased at a nursery; unfortunately we won't have many peppers to share this year.

Steve Rose, in a previous year, with tomato plants he donated to the Sharing Gardens and Monroe's Food Pantry.

We're grateful to our friend Steve Rose for dropping off dozens of tomato plants he started from seed. If not for him and the tomatoes that "volunteered" in our greenhouses from fruits that fell on the ground last fall and sprouted this spring, we'd have no tomatoes. We've managed to dig up and transplant almost eighty tomato seedlings and even have had a few dozen to give away. Thank goodness for volunteers! (This is another great reason for only growing heirloom/open-pollinated seeds: if we had grown hybrid varieties of tomatoes, the "volunteers" could not be counted on to "grow true".)

Thank goodness for kale! Delicious, nutritious and unaffected by herbicide contamination.

On a happier note, it's now mid-June and we have most of the gardens planted. It's been a challenging winter and spring but we're feeling optimistic for the Summer and Fall to be able to fulfill our mission of providing bounteous harvests of vegetables to our local food charities.

LINK to Herbicide Contamination Update

The Sharing Gardens is a registered non-profit and tax-exempt organization. We exist entirely through donations. If you have found benefit from our project or our site, please consider making a small donation through PayPal. (Click button below.)

Herbicide Contamination Update

This is a great 'carrot-year' for us! Just in time to help loosen Bella (5) and Adri's (6) baby-teeth.

Hello Folks! The gardens are finally really thriving this year! We've put the 'herbicide contamination debacle' behind us and are thrilled to already be eating cucumbers, potatoes, summer squash, and tomatoes daily from the gardens. That's early for us! Both our local Food Pantries have begun receiving weekly deliveries of fresh, organic produce that, along with cucumbers and squash include cabbage, beets, carrots, kale, elephant garlic and lettuce.

We feel relatively confident that we have identified the source of the herbicide contamination that devastated so many of our seedlings this year. We had made our own potting-soil from a combination of composted horse-manure combined with last-year's compost (made primarily from leaves, grass-clippings, wheat-straw and vegetable scraps) and we weren't sure which ingredient was the cause of our problems. LINK to original article

We make our compost primarily from leaves, lawn clippings, wheat-straw and food-scraps.

We are reasonably certain that the horse manure was to blame. We have a friend who brings us his composted horse manure which we have used all throughout our gardens for several years with no ill effects. He has always been very careful to bring us loads from a pile that has sit fallow for many, many years. Coincidentally, the one time he brought us a load that was from a fresher pile was the load we used to mix up all our potting soil (at least 15, five-gallon buckets!).

Herbicide contamination of tomato.

The only places we've noticed the stunting effects of the herbicide were 1) in plants grown in the potting soil we made, 2) places where we dumped the potting soil in our greenhouses,  3) where we used that batch of manure to amend soil directly. None of the places that we have used the wheat straw as mulch, or the compost we made from it have shown signs of contamination  -- unless we also used the manure in those same spots.

Our last piece of evidence that supports our theory is that our friend used some of that less-composted manure on his tomato patch and all of his tomatoes are showing strong signs of contamination (and he didn't use any of our compost, or the wheat straw we thought might be the source).

It's becoming harder and harder to find clean sources of material to use as mulch, or to build our compost piles as more and more chemicals are being used to grow food, and showing up in the environment from other sources. This herbicide contamination was a real wake-up call for us!

Will we continue to use the horse manure from our friend? We've really meditated on this. It is our intention to demonstrate a "veganic" style of agriculture that uses no livestock manures, or commercial, concentrated fertilizers. It is important to us to use local materials - like leaves and grass-clippings to create soil-fertility. We don't eat meat of any kind and feel it's hypocritical to benefit from the by-products of an industry that is not sustainable and that we don't support philosophically. Recently we did turn down an offer for a load of goat-manure to be delivered to the gardens, for these reasons. We only used a 2-pound box of commercial fertilizer to get all our seedlings started this year, which is incredible when you realize how many hundreds of seedlings we started!

A pile of our finished compost - super-food for the gardens!

For now though, we're going to continue to accept Dave's donations of horse manure. Because he saw the effects of the contamination on his own plants, we're confident that he'll only bring us manure that is thoroughly composted. With the exception of the single contaminated load, Dave's been bringing us manure that's been composting for 20-years. We don't know how much nitrogen or other nutrients are left in it, but the composted manure has a beautiful consistency that really helps "fluff" our soil which has a high clay content. Maybe when Dave runs out of manure that's sit fallow for a long time, we'll wean ourselves off this source of soil-amendment.

Note: If you are using horse manure in your own gardens, be sure it has composted for a minimum of two years but the longer the better. Also, if the pile sits out in the rain and fresh manure is added on the top, it's possible that the rain can leach the chemicals down into the older material at the bottom. If in doubt, do not  add it to your garden, or use it to start seedlings until you test it. One website we visited recommended testing the manure/soil by planting peas or beans in it which are highly susceptible to contamination and will show signs of leaf-curling once the second set of leaves begin to form.

First ripe tomatoes - July 7th!

We're happy to report that, thanks to 'volunteer' tomato seedlings that we transplanted into our greenhouses, and Steve Rose's generous donation of surplus 'starts' that we have close to 100 tomato plants growing and the first Stupice plants began producing ripe fruit in early July - right around the normal time for our greenhouse plants!

The Sharing Gardens is a registered non-profit and tax-exempt organization. We exist entirely through donations. If you have found benefit from our project or our site, please consider making a small donation through PayPal. (Click button below.)

Why growing sunflowers is great for bees...

...and how to grow and process sunflowers for birdseed and sprouts.

Sunflower Pollen - Pro-"bee"-otics for Bees!

This is a post about the varieties of sunflowers we choose to grow, how we grow them and process them for winter use.
 
In reading an issue of National Wildlife recently, we came across an article about the health benefits to bees of sunflower pollen. With populations of many bees on the decline, they need all the help they can get! Apparently sunflower pollen reduces the infections of some varieties of bees from two widespread parasites. Previous research had "linked both types of parasites with slower colony growth and greater mortality rates". Scientists compared the effects of sunflower pollen with pollen from different types of flowers and "none of the other pollen had the same effect".

But, "while sunflower pollen may provide (the above mentioned) medicinal benefits, it is low in protein and some amino acids," say researchers in Scientific Reports. They conclude that sunflowers should be supplements rather than the main source of the insect's diet. "Bees do best," the scientists point out, "when they have access to a variety of flowers". *Source below.

Sunflowers are also powerful bioremediators, meaning they can absorb and accumulate heavy metals and toxins from the soil, effectively detoxifying it! IN the following article it is noted that, "after both the Fukushima and Chernobyl nuclear incidents, sunflower fields were planted across the affected areas in an effort to absorb radiation, then were harvested and disposed of safely." Cool, huh!? (LINK:U.Va. Undergraduate Researcher Studies Sunflowers’ Power to Clean Up Soil)

A border-row of Mammoth Russian sunflowers.

Sunflowers are one of our favorites. They're beautiful and easy to grow. They provide wonderful pollen for insects and home-grown bird-seed for our feathered friends. And, the seeds can be used to grow delicious, nutritious sprouts for winter greens.

Planting Sunflowers - direct seeding: Sunflowers can be directly sown, a few weeks before the expected last hard freeze (a light frost won't bother them). Push them into soil about 1/2" - 1" deep. If you have jays or crows in your neighborhood, you might need to cover the starts with row-cloth or some other protector until they're rooted as birds do love the seeds and, if they watch you planting, they may wait till you're not looking and dig them up (we've had this happen to us in the past). In order to avoid this problem, we usually start our sunflowers in pots and transplant later.

We've had young children help us plant large patches of sunflowers. It's a fun garden activity that's hard to get wrong. You may need to thin out your patch after they germinate so each plant has enough room to grow (3'- 4' between each plant on the tall varieties!).

Planting Sunflowers - transplanting from pots: We usually start our sunflowers in pots and transplant them out. This way they can have a strong head start. We plant two seeds in each 3" pot, at opposite corners and, after they germinate, either pinch one off, or carefully re-pot them so there's just one plant in each pot. Plant seeds about 1/2" deep. If you're going to divide and re-pot, don't wait too long as sunflowers have extensive root-systems and you risk damaging the plant if the two starts' roots become intertwined. Keep plants in a place protected from wind and full sun for a few days while they adjust to their new pots.

When you are ready to transplant outside, put plants outside your greenhouse for 5-10 days so plants are "hardened-off by exposure to wind and cooler nights before you put them in the ground.

Plant 'starts' in the greenhouse. Zucchini plants in foreground.

The tall varieties of sunflowers we grow need full-sun, wide spacing (3'-4' between each plant!) strong staking - so they don't fall over and shouldn't be over-watered.

Placement: If you plant a whole row of them, keep in mind that they will shade smaller plants, and block overhead sprinklers for watering. We almost always plant ours along the edges of garden beds so they get watered along with our other crops.

Watering: Sunflowers, if planted early enough that they can follow the water-table downwards through the summer, they can do well without much supplemental watering. Beware of over-watering as they can grow too fast, get top-heavy and fall over.

Staking: The tall varieties of sunflowers will almost certainly need staking.

Sometimes we'll drive an individual stake in the ground next to them; a 4'-6' metal stake is best. Drive it deep into the ground. Tie sunflowers to stakes with cotton strips.

Sometimes we'll erect a bamboo tri-pod , stake it and tie two, to three sunflowers to each one.

We've also grown sunflowers in long rows between tall stakes with heavy wire run between them. Attach wires at 3' and 6' heights and tie sunflowers to them with cotton strips.

Sunflowers can also be tied to fences with cotton strips to keep them from toppling.

This is a trellis we made by stretching strong wire between two fence posts. Here, Cindy is tying up bamboo poles to trellis bean-plants but this same kind of trellis would work for a row of sunflowers. For sunflowers, stretch two wires; one at about three-feet above the ground, and the other at about 6'. Tie plants to wires with cotton strips.

A bean-tipi (with scarlet-runner beans) and Mammoth Russian sunflowers growing beside it. They are each tied to a separate 4-foot wooden stake.

Varieties of sunflowers we like: Most years we just grow two varieties of sunflowers: Mammoth Russians and Autumn Beauties. The Mammoth Russians make good bird-seed for bluejays and other large seed-eating birds, and they are also great for growing sprouts, a delicious and nutritious source of winter "greens" (LINK to post on growing sunflowers sprouts). They can get extremely large (10' or higher) and will usually require staking so they don't topple in the wind when their heads are heavy with seed.

Mammoth Russian sunflowers can grow huge! You can see why it's important to stake them so the don't fall over when they're heads are full of ripe seeds.

Autumn Beauties also make great bird-seed for smaller seed-eaters and their range of colors from yellow through orange to a russet-brown make a beautiful border "hedge". They have many heads on one plant that ripen over the course of the season and though their individual flower-heads are quite a bit smaller than Mammoth Russians (6" vs 12" - or more) the plants themselves can get as tall as the Mammoths and will also require staking. They too need three to four feet between each plant. Autumn Beauties also make great cut flowers if you have a heavy, deep vase but beware, they drop a lot of yellow pollen on whatever surface they rest upon.

Autumn Beauty sunflowers...So beautiful against a blue, autumn sky! A favorite for bees and birds alike.

Saving seed: Sunflowers easily cross pollinate. If you want to save seed to plant next year's sunflowers, be aware that they are quite prone to cross-pollinating with other varieties. So, if you were to grow both Mammoth Russians and Autumn Beauties nearby to each other, the seed you save would have a high probability of being a mix of the two varieties. Though we've had good luck with growing pure Mammoth Russian seed, the Autumn Beauties (even if they don't cross with other varieties) tend to become less colorful with each generation. For these reasons, we usually just buy fresh seed each year.

When to harvest seed: If you're just growing the flowers for their beauty and you don't care about saving the seed, you can leave them standing for as long as you like, well into the winter. Birds enjoy them for winter perches and will happily eat the seeds right off the heads. But, if you wish to save seed to feed them later in the winter when natural forage is harder to find, here's how to do it:

Processing the seed: As autumn approaches, it is important to regularly monitor the ripeness of the seed. Sunflowers ripen from the edges in towards the center. Periodically pull a seed out and crack it open to see if the seed inside is fully formed. Notice if the birds are starting to eat them. If the birds are starting to eat them but they're still not ripe most of the way to the center, we sometimes cover the heads with a paper sack or a mesh onion-bag.The onion-bag is preferable because it allows the pollinators to continue to have access to the less-ripe seeds and more of them will be pollinated.

Onion-bags are great to protect seeds you're saving from being eaten by wild-life, or fruit from being harvested before the seeds are ripe. (Pictured: green-peppers ripening for seed).

Processing Autumn Beauties: Once the seeds are ripe, we cut the heads off and lay them on shelves in our greenhouse and turn them up-side-down or cover them with screens (to keep the birds from getting to them). We leave the Autumn Beauty heads to dry completely without removing the seeds. Then, over the course of the winter we place the dried heads outside for the birds to enjoy.

Llyn, laying Autumn Beauty sunflower heads face-down (to protect from birds) to dry.

Processing Mammoth Russians: The Mammoth Russian seeds we remove right away. This is easier to do before the heads dry. Remove the ripe seeds by rubbing them free with your thumbs. We usually use gloves as it can be a bit rough on the thumbs!

To remove seeds from head, use your thumbs to rub them into a tray.

Another reason to process the seed soon after harvest is that the seeds can mold due to the high moisture content of the flower heads. If it will be awhile before we can process them, we often cut off the fleshy backs of the flowers heads. By the way, this is a very relaxing process and a favorite autumn task for share-givers (volunteers) to enjoy while sitting around in the shade at the end of a busy morning out in the gardens.

Processing sunflower seeds is a favorite autumn task. (Crates of Delicata squash in the background.)

Even young people enjoy this quiet meditative task.

The Mammoth Russian seeds will almost certainly need more drying after they've been removed from the flower head. Be sure they are thoroughly dry before storage or they will mold and be ruined. Small quantities can be dried in a food-dehydrator. If the air is not too humid in your greenhouse at time of harvest, spread the seeds on screens or in shallow card-board boxes but be sure to protect them from birds and rodents while they dry with screens on top too. We've also put the seeds into shallow baskets and dried them on shelves above our wood-stove.

Feeding the birds: Autumn Beauties: Just put whole heads out on your table-feeders, or string them on a wire between two posts or trees.

Mammoth Russians: We buy millet in the bulk-food section and mix it with the sunflower seeds and put it on a table-feeder or directly on the ground.

Chickadees love sunflower seeds!
(Photo credit: www.wallpaperup.com/45606/sunflowers_1920x1200_wallpaper_Animals_Birds)

Growing your own sprouts: Here is a post we wrote about growing your own sunflower sprouts.

Sunflower sprouts for winter "greens". You'll need a sunny window or greenhouse but their delicious, sweet, nutty taste and high nutrient-content are worth it!

Herbicide contamination: Sunflowers are very susceptible to certain herbicides (see our post about herbicide contamination from un-composted horse manure).

Hopefully this post will inspire you to add some sunflowers to your summer garden. These glorious plants have given us much pleasure and they're sure to please you too! 

 

Though this farmer in Scotland is growing sunflowers too far north for them to set seed, his 250,000 plants must produce an incredible source of food for all the pollinators in his area! LINK: Farmer Creates Massive Sunflower Trail Growing 250,000 in a Pattern Out in His Fields

* Source: National Wildlife - Feb/March 2019, p 8.

Kale again in the "Dirty Dozen" - 2024

Each year, the Environmental Working Group (EWG) analyses the data from thousands of samples of fruits and vegetables tested by the United States Department of Agriculture for traces of pesticides (The 2024 guide includes data from over 45,000 samples of 46 fruits and vegetables). From this they publish a report of the Dirty Dozen and the Clean Fifteen (the most contaminated and the least...).

Once again, strawberries top the Dirty Dozen list and kale is in the top three. Blueberries and green beans have been added to the list for the first time. The Dirty Dozen are fruits and vegetables that you should be especially careful to buy organically grown, or better yet, grow your own!

Here is a LINK to another site's excellent summary of what you need to know about the Dirty Dozen with tips on the foods least likely to have high concentrations of pesticides.

Here is a CNN article that summarizes EWG's work and contains other relevant links. LINK

Here is a link to the Sharing garden's post on "Why we eat and grow organic food".

And tips on growing kale in your own garden. 

Kale seeds, we saved ourselves...ready for planting!

Bella loves kale!

How to help the Monarch Butterflies - Starting milkweed from seed

Monarch, ready to be released. Image credit.

Note:  This post was originally posted in 2021, a year that the numbers of Monarch butterflies counted in the southern California populations plummeted!  (only 2,000 counted in southern California nesting sites in January of 2021). LINK-Western Monarch populations

But the last two years have shown substantial increases in the winter count:

Feb 19, 2023 LINK: "...Over 130,000 butterflies were reported in Santa Barbara and San Luis  Obispo Counties alone. The San Francisco Bay Area also witnessed a comeback from last year with more than 8,000 butterflies reported in surrounding counties.

This season’s results are a welcome reprieve from the dismal total of less than 2,000 individuals counted in 2020—and larger than the 250,000 counted last year.

335,479 is squarely back into what was considered “normal” in 2000-2017." 

Pic credit: https://earthwiseradio.org/2015/07/monarch-butterflies-2/

Perhaps the public's concern for their plight has actually made a difference! Here at the Sharing Gardens, we've been starting Showy Milkweed plants from seed for several years. We've been successful to the point that the plants are now reseeding themselves in various places on our land.

 

This post is about our experience growing milkweed at the Sharing Gardens with tips on how you can do it too. At the end of the post are many other resources to help you, help the Monarchs (and other beautiful and necessary pollinators)!

 

Adri's instructions

Last spring (2020), when grade schools were first shut down in Oregon during the pandemic, our dear little friend Adri (who's been coming to the Sharing Gardens since she was a baby in a back-pack) arrived at our weekly volunteer-time with a small packet of showy-milkweed seeds and instructions for planting them that she'd carefully hand-copied from her teacher's instructions. She was wondering if we'd be willing to grow some out in our gardens as she doesn't have a sunny enough yard at home. We said, "Sure!". 

Showy Milkweed in bloom

We've been growing "showy" milkweed (Asclepias speciosa) since 2018. To begin with, someone gave us a few "starts" and a hand-full of seeds to experiment with. The variety we grow is native to the Pacific NW - where we live - and well- suited to our site (full sun, moist soil). (If you live elsewhere, you might wish to research what varieties will do well for you). Also, whatever variety you decide to plant, there seems to be some evidence that butterflies prefer native species to their hybrid cousins, so choose accordingly (LINK).

 

We had tried several different ways to germinate the seeds but they were only moderately successful. We did establish a patch of about a dozen plants that wintered over and began producing flowers themselves (summer 2020) but the method Adri brought to us has been the most successful so far. Here's what to do: Wrap the seeds in a damp paper-towel (squeeze it out thoroughly so it's just lightly moist), secure the seeds in a sealed freezer bag and put them in your refrigerator for 30 days. This simulates a cold, wet winter that the seeds need to break from dormancy. Plant in soil (about 1/4" deep) being very careful not to damage the tiny emerging root. Place in a sunny window, or greenhouse and water from below. They should emerge from the soil in about ten days.

 

This is what seedlings should look like after placing the seeds in a damp paper-towel inside a zipper bag and refrigerating for thirty days.

To grow seedlings bigger, arrange in potting soil...

...and cover with about 1/4" soil. Be very careful with their fragile roots.

Seedlings after several more weeks...

Though theoretically, you could transplant the seedlings into the ground at this point, they will have a much better chance of surviving if you pot them into larger pots and plant them into the ground once they have bigger root systems. With Adri's seedlings, we re-potted them two times through the summer until they were in half-gallon pots. These, we wintered-over by clustering the potted plants in a sunny spot in our yard, protected from cold, north winds under a blanket of fall leaves.

Adri and Kaylynn with milkweed plants at about 120 days from putting seeds in fridge. Two plants per pot.

Milkweed plants wintered over two years in pots. Ready to get into the ground!

This coming spring, we'll transplant them into a sunny spot. Aside from propagating from seeds, the roots also send out runners and start new plants. We have a patch of milkweeds that grew as volunteers from underneath the pots we'd wintered-over in a previous season!

Milkweed is a perennial plant. Under the right conditions, it returns year, after year. But plants don't begin flowering till their second or third year so be patient!

 

The showy milkweed is well-named as it has beautiful, pink flowers but its real contribution to a perennial garden is its rich fragrance. Very much like an Asian lily! Though we've yet to see any monarchs on our plants, during their blooming season last year, our plants were covered in many kinds of other pollinators including bees, both wild and "honey" bees.

Life-cycle of the monarch butterfly (by Adri Kitchen).

Milkweed is a "host" plant to the monarch because adults enjoy the nectar produced by its flowers (though they seem to enjoy other nectar plants too LINK). But, as far as is known, they only lay their eggs on milkweed plants as these are what the larvae eat. Milkweed has a mild toxin in it which builds up in the bodies of the larvae and makes them bitter for their predators to eat. This toxin remains in the bodies of the adult butterflies too also giving them protection from predators.

People who raise cattle have tried to eradicate milkweed because it can be toxic to their livestock. Since we're vegetarians and have no grazing animals on our land, we're happy to provide this host plant for the monarchs and other beneficial insects who enjoy its nectar.

Studies show that a mixed stand of wildflowers seems to be beneficial to monarchs (and probably to other pollinators too). In other words, it's not ideal to grow milkweed alone. Llyn with crocosmia (red) and tansy (yellow - a volunteer "weed" that, though reviled by horse-owners is beloved of bees! Super fragrant too!).

Recent studies suggest that monarchs have a higher reproduction success-rate if the milkweeds are growing in a stand of mixed wildflowers LINK. We didn't know this when we established our first plot so they are growing alone. But this next spring, when we plant Adri's plants, we will grow some other wildflowers amongst them. That should be really beautiful!

 

Be sure to plant at least a dozen plants in a patch. If the larvae emerge from their eggs and begin munching their way through the leaves of the plant and should fall off for some-reason, they need to have multiple options for plants to climb back up on. Also, adult monarchs are far more likely to find a large patch of milkweeds than a small one. 

Plant at least a dozen milkweed plants together. This will help monarchs find them.

Milkweed seeds, ready for harvest.

The cycle of planting milkweed is complete when they begin producing flowers and seeds (in their second or third year). We have some extra seeds if you're interested in growing some milkweed in your yard. Just let us know (shareinjoyATgmail.com).

Honey bee on tansy.

Here are some other links with info you may find helpful and inspiring as you begin your butterfly garden:

 

Ways you can help right now:

 
1. Plant native milkweed: In Willamette Valley, that's showy milkweed (Asclepias speciosa) and narrow leafed milkweed (Asclepias fasciculatis)

2. Provide nectar
3. Don't use broad spectrum pesticides (https://monarchjointventure.org/monarch-biology/threats/pesticides)
4. Reduce your lawn size
5. Support local efforts by educating others, advocating for different practices in your community, or become a citizen scientist

 

From the National Wildlife Federation: on how to benefit butterflies. When you're planning your garden this coming spring, think of the monarchs!

 

 Check out Xerces Society and Monarch Joint Venture for more information on national efforts and ways you can help. Monarch Watch and Journey North are two citizen science groups that record monarch  and milkweed sightings. For an interactive map that tracks seasonal migration, try Journey North There are monarch butterflies in the Willamette Valley, but we need more citizen science reporters!

 

 Plant Native Milkweed Cultivars to Support Monarch Butterflies and Bees

These findings suggest that the efforts of individual gardeners to plant milkweed, either wild-type native plants or native cultivars, can be helpful in supporting the declining populations of both monarch butterflies and other insects. 

A moth found in our garden.

New Clues Help Monarch Butterfly Conservation Efforts:

"For example, the diversity of plants in a garden, the specific plants that are used and their arrangement — all of those things matter for how the butterflies are able to locate the hosts and move from one to the next."

 

Monarch Butterflies’ Spectacular Migration Is at Risk – An Ambitious Plan Aims to Save It  

 

LINK: Fate of monarch butterfly up in the air

 

Another "beauty" amongst the marigolds.

'Extinct' large blue butterfly successfully reintroduced to UK 

Finally, some good news! Conservationists have successfully reintroduced previously extinct large blue butterflies to the UK, with the creatures populating parts of the country for the first time in 150 years. 

 

Image credit: Llyn Peabody - 2020

 Rewilding at the Sharing Gardens...Here's a post about our efforts to create more wildlife habitat on our 3 and 1/2 acres.