They are not being eaten. My grandfather gave me some tropical milkweed seeds in a pot a few weeks ago, within a week they sprouted up, now 2 weeks later they are still only an inch tall and seem to stop growing. I put 3 tropical milkweed seedlings in with it, will see what happens. Am I too late? The solution to supporting more monarchs and other pollinators will be found through the willingness to explore all potential opportunities, both old and new, to discover a better way to support pollinators in a modern world. I had A.Incarnata and A. Tuberosa last year, both had flowered and had a quite lot of caterpillars on them. They are wilting badly during the day but perk up in the later afternoon. Otherwise, you can bring in a couple plants and take cuttings to increase your supply: I planted a Tropical Milkweed in full sun (zone 7b, North Georgia). The heart leaf milkweed I have that is supposed to be a native is struggling to grow no way is there enough (one small spindly plant) to support Monarchs, so that goes to show sometimes natives don’t work as it can also depend on the microclimate your garden may be in. This article was useful in telling me what to expect from it and how to propagate it. Amy, I couldn’t disagree more. Can I plant some now to any benefit? Bloodflower will produce clusters of beautiful red & yellow flowers. Here’s more info about the process: You will need to actually plant them in soil after they root or they will rot. You could also try winter sowing them since your winter doesn’t get too cold. Also, we have viable tropical milkweed in our northern garden for weeks after the monarchs are gone. I would suggest 4-6 plants minimum…good luck! Please help and advice.. They didn’t flower (started from cuttings in June) though. Today I noticed several of theses caterpillars just eating away the leaves. Thanks! Tony. That’s because I brought the eggs in. I’ll pick up some genuine curassavica if a local garden center is selling it this year. Would it be beneficial if they had some additional time in a cool fridge without the moist stratification prior to giving them moist stratification? , I just read that tropical milkweed could be a detriment to Monarchs and that native milkweed is the best. Please see the article at I have to say though that my seeds germinated in about a week in peat pellets with a plastic dome over them, I got about 99% germination too. Hi Donna, it’s probably from the full sun…that’s a big adjustment. If you’re looking for rapid growth and full size plants, someone just sent me this info which might help:, Hi there I am living in the Tropical South Pacific and have purchased A. Currassavica seeds but have had a really poor germination rate. I’m thinking about putting up a butterfly house but not sure if the butterflies actually use them. Also how long does it take to grow, flower, and produce seeds if i grow from seed in the spring rather than starting seeds indoors? Or should I wait to cut them back later? Organizations engaged on conservation of monarch butterflies as well as conservation in general list only native milkweeds. Is this true? Other common names of this plant are Swallow-Wort, Butterfly Weed, Scarlet Milkweed and Mexican Milkweed. We have a relatively high number of native species that are endemic (found nowhere else) and it is practical to conserve them – on isolated islands. I usually pull out tropical milkweed (in Minnesota) in October. At another nursery, I was told that I should get some A. Currassavica because the butterflies at least are attracted to them for their nectar. This is a call for help to the master of monarch knowledge. Beatriz, OE can be spread to monarchs through any variety of milkweed, both native/non-native. But I was told that it didn’t matter, since monarch butterflies don’t breed in SF anyway. I’m in SoCal. I have been trying to rinse the aphids off under the faucet, wondered if there is a better option. Hi Arthur, harvest them when they are cracked open, but before the fluff starts coming out, much easier to harvest then: I have a milkweed plant. Plants move around, they die out, they come back, they die out again. How do I keep them over winter? An absolute favorite of butterflies, all varieties of Asclepias are known to attract our colorful, winged friends. It makes much less sense to be precious about species moving around on a continent. Every day I microwave a cube for about 30-40 seconds. I got my seeds from a monarch-saving organization that was advertising free seeds. Please help I love it but can’t afford to keep on going to buy more plants when leaves are eaten and gone? Here’s more info: Well, today I figured out why I haven’t been able to get my tropical milkweed plants, grown from seed, to bloom. Resident monarchs and many other tropical species feed on them and whether they get OE or not they must have worked that out during the process of coevolution. I have tons of monarch eggs on my Blood Flower Golden Silk. I would just like to see the darn things bloom at some point. Hi David, around mid-upper twenties and they should die back. Hirtella They are just seedlings, but I am hoping they will fill in quickly here in zone 9b. Can I start the seed next year and when should I do it. Thank you, Hi Helen, tropical milkweed is a tender perennial in your region, so you might want to leaf mulch in late fall to give the roots some extra protection. taking cuttings now means that they would stay indoors for at least seven months and probably flower before they could safely stay outdoors, but the monarchs really loved them this year so i want to try and grow a big patch this coming summer. Hi Deborah, it’s too late for monarch eggs this season. Here’s more info on the potential problems/solutions with tropical milkweed: hello tony, i checked all the tops of my mexican milkweed, Asclepia curassavica, and i can’t find any growing tips that aren’t producing flower buds. Will this milkweed die or can I cut the stalk back to a few inches for new growth? Hi Danica, once you have mature plants it’s much easier to overwinter and take cuttings to start new plants. Have just caught up with your post made about a year ago, John! Please refer to this article. Tropical and swamp milkweed both grow well in containers. I read that Home Depot sprays their plants with pesticides and the pesticide residue is toxic to the caterpillars. I live in NE FL and would like to plant asclepias tuberosa in addition to some more tropical milkweed. Asclepias is a genus of herbaceous, perennial, flowering plants known as milkweeds, named for their latex, a milky substance containing cardiac glycosides termed cardenolides, exuded where cells are damaged. How to determine which butterflies are residents and which are migrating? This year I was expecting the plants to return, but it is mid-spring here in NJ, and there is no sign of anything shooting up. And now the webs are back and it looks horrible. And under the circumstances of lost leaves, a pretty good milkweed bug infestation, some aphids and the time of year, if I should just go ahead and cut them back to about 12″ off the ground? Don’t want milkweed all over our property … what should I do. I harvested some of my Tropical Milkweed seed pods too early (seeds are white). I really would hate to destroy future Monarchs by taking the eggs, but if mamas keep laying them on the plants intended to feed the last 4 indoor babies, do I have a choice? You can keep the water at a good temperature by putting the seeds in a small bowl of water and placing it on a heated seedling mat. I’ve had it for years and it’s done very well, even surviving a particularly harsh winter a couple of years ago that wiped out a lot of stuff here in Wisconsin. I want to start at least 20 plants. Scarlet Milkweed has become a naturalized weed in tropical and subtropical pastures, fields and disturbed areas throughout the world. They spread by underground crawling. Thank you. Check out this article for more info:, > “If you know other pollinators tropical milkweed attracts, please comment”. Hi Andrew, it’s late to be stratifying seeds but you could try an abbreviated cold moist stratification (1`-2 weeks) and hope for the best. Grow Bloodflower from fresh Asclepias curassavica flower seeds. I’m very new to this and I spend all my money on plants and paying a man to put them in the ground or in pots. If they stay put it may be because the climate suits them, or maybe they are stupid. The plant was still in the nursery pot (5 gals), so I repotted in a larger pot. All of them have “committed suicide” as I call it; they leave the plant at some point and just don’t return. Hi Jan, check out this post: Milkweed diseases. I unsuccessfully started growing Tropical milkweed seed this year with three attempts and the third one finally succeeding. Should I just put them in the fridge, plant them, or leave them at room temperature? Those are Monarch Caterpillars Betty…they eat milkweed to transform into beautiful monarch butterflies! You could even try putting out “winter sowing” containers in spring since the curassavica seeds don’t need cold moist stratification. Hi Donna, butterfly houses are for decoration only, but other insects or wildlife might use them. They have dropped a lot of their leaves due to heavy rains (Hermeine). Study up on the proper milkweed plant for your state. I have a variety of milkweed plants in my Southern California garden. The whole concept of “native” is flawed. All info I have shows they are hardy to 10…will they come back or should I just cut them all down and replace them? I don’t know if the aphids prevented blooming or if there is some other reason they won’t bloom. Here’s more info you should find helpful: Thank you so VERY much Tony!! Should plants be fertilized during growing season? General Information. It does not like to be over-watered. 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