Purple Coneflower … Is winter sowing right for you? Click to share on Twitter (Opens in new window), Click to share on Facebook (Opens in new window), Click to share on Reddit (Opens in new window), Click to share on Tumblr (Opens in new window), Click to share on Pinterest (Opens in new window). In addition to the concerns over OE and disruption of migration behavior, emerging research suggests that tropical milkweed may actually become toxic to monarch caterpillars when the plants are exposed to the warmer temperatures associated with climate change. It is growing fine and blooming too. Mold issues only occur when seeds are wet. Subscribe to our mailing list – We’ll inform you of new promotions and products. This has only been in an issue in the opaque milk jugs that receive less light. Here’s more info:

Harvesting Milkweed Seeds

  • I enjoy this so much. Will be waiting for a reply. Will Butterfly Milkweed Grow In Shade? Great Blue Lobelia lobelia siphilitica. It normally grows in swamps, so it’s a good choice for water gardens, ponds, ditches, or other constantly wet spots that get full sun. When seeds are subjected to cold before gradual warmth, this breaks their dormancy and causes them to sprout. I plant seeds about 1/4″ deep and cover with soil. Fold it over or place another wet paper towel over top. They’ve been driving me crazy. Exposure of seeds to cold temperatures and moist conditions during winter will stimulate germination. As an alternative, you can start your seeds indoors, 4-8 weeks before the average date of last frost. Any suggestions?

  • Regarding winter sowing in containers, which is the the best type of soil to use: starter mix, potting mix, or potting soil? I’d just like a little clarification. Milkweed seeds will germinate better if they are cold stratified. Starting seeds indoors in winter Directly sow your seeds in the garden in the late fall, and let the winter weather take care of cold stratification for you! Ready for super sow Sunday but it might be on Monday that they get planted.
    Brian

    • Hi Brian, I had gotten them from a gardener a while back and the seeds weren’t viable. Bloodroot sanguinaria canadensis. When the caterpillars hatch, they feed on the leaves of milkweed. These are the native and perennial milkweed species we planted to build our foundation…, 2. Fall planting in fall gives your plants a chance to establish themselves before winter. I live near Cincinnati Ohio and wonder if they will make it here. These are some container options that have been successfully used by other gardeners. If those are seeds that survived outside through the winter, then they should be good to try and germinate—milkweed seeds need to be cold-treated otherwise. An early milkweed for USDA zones 5-9. Are these still the super butterflies that live 6 months? The few times we have had a freeze I have covered up my milkweed trying to save it for the coming year. We are on our second year if a couple of milkweed plants.

      Thanks for the great work and info you are doing. I’m thinking you meant transplanting from the ground from and established field.
      I don’t even know what kind of milk wee we have! Get familiar with milkweed: there are some imposters out there. I have read some information from other sources that say that milkweed seeds need light for germination and therefore should not be covered with soil when planted. A neighbor has a whole field of it!
      You mentioned once that it doesn’t transplant well. Once you’ve got the necessary tools, it’s time to sow your seeds! Butterflyweed asclepias tuberosas. Use a good all-purpose potting soil, seed starting mix or make your own. Three years later, it keeps coming back…. Put the sandwich bags inside the food container and put the lid on securely. Cold stratification is a simple pre-treatment that breaks the natural dormancy of the seeds and promotes germination. I have about 100 seeds planted in three containers so far and will sow more tomorrow. Northern Blue Flag iris versicolor. Once the milkweed seeds have been stratified for at least 30 days, they are ready to be planted indoors in preparation for being planted outdoors once the weather is amenable. We are doing an Earth Day event with the Girls Scouts and I’m just trying to make sure we have the most successful pollinator garden possible.

    • Hi there,

      I am in the Northeast Region, and the milkweed that is native to the area is Asclepias incarnata (swamp milkweed). In the meantime, keep you Milkweed seeds in a dry, aerated envelope and store in a dark place for the Winter. It sounds like your neighbor might have common milkweed. Each year I try to implement new gardening techniques that get more results with less work. But I want those Monarchs back. If you live in a climate with a warmer winter, you can plant your seeds in either the spring or the fall. Grocery store Rotisserie Chicken container, 8. Every once in a while, I’ll search for seeds online but no luck. I even bought one of your tents and watched some of them pupate up close. … With proper care, they’ll be ready to sprout again the following spring from an underground network of creeping roots. Winter weather provides a natural cold stratification process. Disposable food storage containers with snap-on lids, 3. Whether to grow milkweed from seed (l), transplants, or rhizomes may depend on the species and the location. We collected milkweed seeds this past fall. Monarch caterpillars are tolerant of these chemicals⁠—in fact, cardenolides are the very compound that protects the monarch from predation. This year I’m adding winter sowing to that list. I’m sure covering with hardware cloth will work, but the seeds might not germinate as quickly…good luck!

  • I collected my milkweed seeds last fall, made sure they were dry and placed in zip baggie. When planting seed outdoors, keep in mind that all plants have optimal soil temperatures for germination, which makes propagation a little more difficult. Thanks!

    • Hi Bridget, I wouldn’t worry too much about transporting seeds from one location to another. For keeping milkweed seeds from … Planting the Seeds. I’ll only have room for2-3 little pots but can I plant them outside after May 31? It is best to transplant the seedlings when they are around 3 inches tall. A good friend I used to work with (she retired) used to bring in this 3 sided glassed box where she used to have the monarchs pod on the top. Warm weather varieties (e.g. Is the “greenhouse” effect of the containers important? and have difficulty propagating narrow leaf milkweed seed. I have a salad table outside that I used for sowing seeds this time which I covered with hardware cloth to keep the birds off. I let seeds sit in a bowl 24 hours before storing them.

  • Hi Matt, thanks for the great info. Cover the seeds with the moist soil and place a thin layer of straw or leaf mulch over the area so it doesn’t dry out. Over the past two cold, wet springs (in Minnesota) we have had problems with M&Ms…mold and moss! You can winter sow the seeds or try fall planting. Common milkweed grows well in regular garden soil. Don’t just moisten the soil: really douse it with water. Indeed, eradication of milkweed both in agricultural areas as well as in urban and suburban landscapes is one of the primary reasons that monarchs are in trouble today. … Starting seeds by February should be more than enough time (in most regions) to create the desired outcome. In that case you would need to feed them. In 2016 I commissioned a garden planter that has become The Biggest Little Butterfly … Appreciate your your work to save the Monarchs.

    • Hi Ruth, yes…storing seeds in the freezer counts as cold stratification. I’m assuming they were there in the winter time. I worry about mold. We use pro-mix which has sphagnum peat moss and perlite mixed in to allow more air around developing plant roots and improve drainage. Love it! There is some info on this post about feeding/releasing adult butterflies. Milkweeds are a necessary plant to . Growing Milkweed From Seed: To start milkweed from seed, the easiest way is to emulate Mother Nature and plant them in the fall. The greenhouse effect increases the speed of germination…obviously you don’t ‘need’ it if you think about all the seedlings that come up in your garden each spring. And thank you to anyone that helps!
      ~Madison

      • Hi Madison, it’s a lot easier to start seeds when you know what you’re planting. What do you think?

        Best regards, Kellie

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