Sometimes it is labeled "butterfly weed" or simply "milkweed." They do like sun, but will survive in light shade. With your other hand gently add potting mix and lightly press it down, adding more potting mix if necessary, so that the potting mix is ½ inch below the rim of the pot. If you are planting tropical milkweed in containers, make sure your container is at least 20” deep. 3-5 feet tall. Transplant on a day that is cloudy or during the cooler morning/evening hours. I’ve learned from experience that milkweed seeds need a cold period, or stratification to germinate. Be sure to check the label carefully. Tropical milkweed is commonly grown as a host plant for monarch butterflies. I have collected milkweed seeds in autumn, stored them through winter, then planted them in spring, only to … 662-675-2588 2533 County Road 65, Coffeeville, Mississippi 38922 Stratified butterfly milkweed and swamp milkweed seeds in these packets have been in moist, cold storage for 3 months to break seed dormancy and increase germination. The following method of using a combination of seed raising mix and perlite minimizes the threat of overwatering and makes growing plants from seed a lot easier. Seedling stems are very fragile as they are where the water is transported up through the roots for the plant to grow. Perlite is a naturally occurring mineral with a high silica content. If seeds are started indoors, allow 4-8 weeks growing time before transplanting. If seeds are sown, but not stratified in the fridge, most species will wait until the following spring to germination, though some southern species like Asclepias humistrata, Asclepias lanceolata, and Asclepias rubra may go ahead and germinate without having a stratification period. Soak the container in a dish of water until it is thoroughly wet. The tap roots are the life blood of the milkweed family. Reply. Once the seeds are taken out of the fridge and the temperature is consistently above 75 °F, germination usually occurs in one to three weeks. Planting for Monarch Butterflies . Sometimes the plants in big box stores are actually treated with pesticides – not a good thing for the caterpillars that want to munch on them! Tropical Milkweed (Asclepias curassavica) Quick Facts: Host plant to Monarch and Queen butterflies, nectar to many. I believe that Asclepias tuberosa is the hard one to transplant. When exposed to very high heat it softens and expands up to 15 times its volume, in a process similar to what happens to popcorn when it’s heated. I don’t recommend using a container smaller than 4 in. Ideally, cuttings will include three leaf nodes. It is important when working with seedlings that you pick them up by the leaves and not the stems. Tropical milkweed is attractive and easy to grow, so it tends to be the most widely available milkweed at commercial nurseries. However, there are some drawbacks. Hardy in USDA zones 8-11. If seeds are started indoors, allow 4-8 weeks growing time before transplanting. Hello! I went to clean it up a little and noticed that most of the flowering parts arent even connected to the original plant, they are sprouting off of a dead branch that had fallen. of perlite on top of the seed sowing mix and level it out. Plastic … Transplant in early spring. Keep in mind containers will dry out faster because they have more surface area and less soil to hold onto moisture. Water the ground thoroughly, letting it soak well into the soil. Milkweed is the single most important source of food for the threatened monarch butterfly, and planting a patch or two in your landscape is an important contribution to the continued existence of the species. Asclepias tuberosa is worth planting for more reasons than one, Let titian foliage and berries, silky milkweed, late-blooming asters and more lure you out into the autumn garden, Keep hope, beauty and kindness alive in the landscape by providing a refuge for these threatened enchanters, Celebrate the pollinator community that flocks to this rare prairie native’s nectar and leaves, It's invasive, a nonnative and a poor insect magnet. Reply. Gardener's have recently taken an interest in milkweed plants, as the flowers that appear throughout summer are known to attract butterflies. Gently remove the seedlings by lifting them by their leaves and prying them up with the knife from underneath. Also, don’t forget to make sure the container has been thoroughly cleaned (preferably with a 10% bleach solution) to prevent the spread of soil-borne diseases. “Tropical milkweed itself is not ‘bad.’ (It provides larval food for Monarchs in many places where it occurs naturally, such as across the Caribbean, Mexico, and Central America. It is widely considered one of the most beautiful varieties of milkweed, which has made it a popular addition to butterfly gardens across the United States as gardeners swapped out their native milkweed varieties … I know your intentions are good, but you're not helping the beautiful little pollinators. Healthy tropical milkweed Asclepias curassavica plants should be chosen as parent plants. One to transplant not to let the container in the fridge for 3.... 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