Hi Renee, this is how swamp milkweed goes out every season. However, it is far less common than the previously mentioned milkweeds. Because everything is freshly planted, I have hand watered all the new plants (all are drought tolerant plants, ground cover) and not sure if I have too much or not enough water now for the milkweed. Suggestions: Little yellow spots have developed on the leaves. Iâd also like to add that last year I had the worst aphid infestation imaginable. This can be avoided by bringing in eggs. The extremely fragrant blooms attract and benefit many pollinators. I was going to dig up most of their milkweed and transplant it. I have searched for problem solving issues but am not sure what to try now. There are really only two choices.Â Go outside after 10:00 PM and smash the critters, or use snail bait.Â The bait will not harm the monarch larvae if they are on the plants.Â When the plants get large there is not much of a problem except for very small snails. Hi Michelle, we use h202 preventatively (in spring before milkweed emerges) and to overwinter plants indoors. Hydrogen peroxide also adds more oxygen to the soil to prevent root rot. Tel: (760) 599-7228 It’s the sort of thing I see when my blueberries need more acidic soil – sclerosis. Thank you. I then asked if anyone else had called with the same problem. Filed Under: Milkweed Garden Ideas, Milkweed Garden Pests and Guests, Organic Gardening. They couldn’t offer me a solution. Is there a way to send you an electronic picture. Plant diseases shouldn’t affect caterpillars, but if you have access to healthier milkweed I would use that. The only thing that helped was a mixture of water and Stop n Shop organic plant based dish detergent. The latter two are particularly destructive as both the adults and nymphs are seed predators. Where to See Overwintering Monarchs in California, study the behavior and biology of monarch butterflies. Suggestions: Hi Emily, ants are monarch predators. Of course as a Purdue entomology grad i think they are the best. Any ideas/suggestions on dealing with this problem. The soil is probably already pretty acid but I will check it just to be sure. I try and let the caterpillars do it, but in areas where there is rust the stem just seems to die. The White Milkweed thrives in open upland forests and â¦ I don’t spray monarch eggs/caterpillars directly with hydrogen peroxide and not sure if/how it would affect them. I don’t want to hurt them.. Scale insects are closely related to mealybugs and aphids, however they are different because they have a shell-like covering that camouflages them and protects them from natural enemies.Â Adult scales suck plant juices through tiny filamentous mouth parts and eventually kill the plant.Â Scale eggs hatch beneath the shell and seek their feeding sites in the spring and summer. Is there anything else I can do? Any suggestions? Both nurseries assured me their vendors don’t spray. There are links in the post for how much to use…we use the chart for sick/fungusy plants. Avoid pesticide use around this plant to encourage butterflies to use it. Anyhow, all plants come back just fine the next season…. Hi Tony, I live in MA and have about 9 growing cars of various ages. Suggestions: Planting local milkweed species is always best. Hi Maureen, whenever your treating plants with anything whether it’s a pesticide or considered monarch-safe, it’s always good idea to apply when there are no monarch eggs or caterpillars on the plant. The black spots on my curassavica look exactly like your picture so I’m going out right now to remove the unhealthy ones. I live in central Florida. This article mentions using a hydrogen peroxide mix to kill fungus. I waited a bit and bought two more plants from a different nursery and tried again. As a background, there must be at least 25 cats on the bush which is average size in a container about a year old. The wings that don’t open and deformed chrysalises would make me thing there has been an OE infestation. Wash the plants thoroughly with water to wash off the mites.Â Insecticidal soap helps if the infestation elevates.Â Dust that settles on the leaves encourages mites, so it is best to continually spray the plants with water. I soak the soil with the solution before plants start coming up. I wouldn’t worry about overusing it though. Asclepias purpurascens, commonly called purple milkweed, is a rough, weedy, Missouri native perennial that commonly occurs in dry to moist open woods, dry ridge tops, thickets, glades, prairie openings, stream banks and wet meadows throughout most of the state (Steyermark).It is similar in appearance to common milkweed (A. syriaca), except its flowers are â¦ 2. To control problems caused by water-mold fungi, take steps to improve soil quality and drainage in the ground and in potted plants.Â Do not overwater the plants. This bacterial disease is spread mainly by leaf hoppers and is recognized by yellowing leaves with twisted shapes, and die back of branches. May cause problems at harvest time. About 75% of them seem to be trying to leave the plant. I have not seen any aphids on them or other bugs for that matter. It can also prevent another common fungus that causes milkweed to wilt and die. Hi Terry, I use this more preventatively at the beginning of the season and overwintering plants indoors. If an egg is on a problem leaf, you can cut off a small piece of the leaf (with the egg) and place it on a healthy cutting or leaf. I would also try spraying the remaining stem with a hydrogen peroxide mix…see the chart linked in the article. When planted a few weeks ago we were in the low 80s. Itâs been all day now and theyâre slow to munch. I have two milkweeds that are doing somewhat well. Many insect species feed on common milkweed, including the red milkweed beetle (Tetraopes tetrophtalmus), large milkweed bug (Oncopeltus fasciatus), small milkweed bug (Lygaeus kalmii), milkweed aphid (Aphis nerii), milkweed leaf beetle (Labidomera clivicollis), milkweed stem weevil (Rhyssomatus lineaticollis), milkweed tiger moth (Euchaetes egle) and monarch butterfly (Danaus â¦ Hi Gail, I use the mixing chart for sick/fungusy plants: Sounds like Kathy had a combination of problems. I successfully raised over 50 butterflies at the beginning of the season and now the last 3 cages have been dying as the cats get nice size , they stop eating and just sit there for days and gradually die. To learn more, go online and Google the pests and diseases listed on this page. Most of the milkweed plant is edible including its leaves, stems, flowers and the seed pods. I don’t think it would hurt eggs, but I would suggest testing it out before spraying them in mass…. They’re not planted very close together. Water at the base of the plants– this is lessÂ necessary if your plants have good air circulation. Do not compost diseased leaves/stems and risk spreading fungus spores into the soil. My question is I now have Monarchs laying eggs. It flourished this way. Asclepias syriaca L. â common milkweed Subordinate Taxa. Iâm in Houston and have been raising asclepias for 25 years. I have some yellow/orange looking leaves. My success rate is really good. Hi – I just noticed that my otherwise healthy looking Asclepias tuberosa – butterfly weed – has yellow-ish leaves with dark green veins. The spring shoots arise from underground root buds or from newly germinating seeds. in 1990, our main goal is to study the behavior and biology of monarch butterflies. Hi Deborah, OE wouldn’t cause the caterpillars to stop eating. Hi Barbara, fungus can be a problem with too much moisture or when plants are spaced too close together. it may perform better if it’s allowed to go through the winter part of it’s growth cycle, which it is able to do in perennial zones that still experience a true winter where the plant dies back. I’ve been into monarchs for about four years. I didn’t see anywhere that talked about how often you can spray. The plants infested with aphids you have to wash off the aphids by hand using water in a squirt bottle. Hi Pat, I’m not familiar with the issue. Aphids on Milkweed (click the image for a larger view). Spray early next season including the soil before plants emerge…good luck! Tony, i sprayed with the 1 tablespoon 3% hydrogen per 8 oz water yesterday. The problem, again, is not enough milkweeds! I thought of cutting down the plant totally just in case I missed something. I would also try to find others with first hand experience growing in your region, as they will probably have some more insight into what is most relevant growing in your region. PS…I don’t think it would be toxic to future eggs/caterpillars, but you could always rinse off the plants with water if you are concerned. Common Milkweed Problems They are quite resistant to disease. Told me he trusted his vendor and told me he had a few calls with problems with the milkweed. I also have some butterfly bushes that have a little bleach looking area, but the milkweed is more worrisome for me. I would research thoroughly…good luck! I wonder what the issue is. Funguses are often the result of too much rain or watering. Under ideal conditions, Common Milkweed can become 6' tall and spread aggressively, but it is more typically about 3-4' tall. I planted a butterfly and pollinator garden a couple of months ago. I typically remove the affected leaves…, We mostly use h202 preventatively on the soil before the plants emerge in spring. When there’s problem, I remove leaves/stems before they spread, and that has been effective for us. He leaves look healthy otherwise. I’m just wondering about future eggs/cats. It happened in just a couple of weeks. We have also had good results from sowing the seed in the greenhouse in early spring, though stored seed might need 2 - 3 weeks cold stratification. or is this something that is naturally occurring in the plant? I am not sure if the plant is dying, the sun is killing these leaves or if this is normal. What is it. If aphids are damaging the milkweed in your garden, simply use a wet paper towel to remove them. All my tropical milkweed has the black spots and then turns yellow. In continuous growing regions, tropical milkweed should be cut back periodically so fresh growth can emerge: I started several tropical milkweed from cuttings, and they were doing well until a couple of days, the leaves have tiny white spots and the leaf color is lighter green. I use the measurements for sick/fungusy plants…2 cups in a 2 gallon watering can of the 3%. If there are too many on a plant, do they try to go elsewhere? Why are my plants’ leaves turning purple? I have used the hydrogen peroxide solution with some success. The plants are only about 2′ tall and bloom pods are just beginning to appear. Thanks, Terry Greenwell. The tachnid fly has been covered. I’ve never heard of fungus spreading like this. If the fungus is really bad, i’m not sure what option you have besides cutting back plants. I also need to know if itâs safe to spray with H2O2 solution when eggs and cats are present? When spraying plants, make sure you get all sections and under the leaves too…, Well, I found more spots today, removed the leaves, and sprayed the plants and sprayed the dirt with an almost 50-50 solution of 3% hydrogen peroxide. These include the orange milkweed aphid and other small black bugs. I noticed one of my plants started getting the yellow curled/twisted leaves that you mentioned is caused by leafhoppers. I grew my seeds in 8 “cow pots” sitting in a plastic container sitting on heat mats and all under lights. I’m a first timer here and at home! Hi Claire, we typically use the h2o2 preventatively on small plants and soil before the plants come up. If i could offer a suggestion, find out who your local land grant university is for your state. Recently more common in cultivated fields because of the removal of annual weeds by herbicides which do not control milkweed. Overview Information Swamp milkweed is an herb. or . I would not spray while they are present. Check out our pests page: Tony. Tony, I’ve been concerned about my milkweed leaves turning purple and dropping off. The herb produces one or two large wart-like pods that mature in the fall.Redwing milkweed is a native perennial in the Acanthaceae family. More info here: I planted tropical milkweed in a sunny area in my moist garden about four weeks ago. This way you can find caterpillars and protect the plants. Hello! I want to get ahead of the fungus this year because last year I was far behind. Hi Wheelz, this sounds like a potential virus (NPV) or bacterial disease. I’ll send a photo if you can tell me how. Do you have any ideas on this? I need help with my giant milkweed. ? Hi Katie, this is normal for swamp milkweed and I’m not sure what causes this. Those little beggars will crawl up your arm and bite like chiggers and will drive you crazy for a day. I have a gray film on the leaves of my plants. Chemicals in this sap can be poisonous to animals. I had about 20 healthy butterflies emerge this spring, but the next 10-12 were all diseased. I would like to try the hydrogen peroxide/water spray (I read thru the instrux) and BUT I’m not totally clear: can I do this while caterpillars or eggs may be present? When leaves turn yellow, or start getting spotting/discoloration, try one or more of the following: If you’ve successfully conquered milkweed diseases by using other techniques not listed, please shareÂ your experience and help a gardener out…, Valentine Gift Ideas for a Butterfly Lover, Start or Improve your Monarch Butterfly Garden, Butterfly Garden Book for Monarchs- Instant Download, Start Raising Monarch Butterflies Hereâ¦, Top Tools, Supplies, and Resources for Raising Monarch Butterflies, Monarch Butterfly Kits to Raise Caterpillars into Butterflies, 25 Milkweed Plant Ideas for North American Butterfly Gardens, Winter Sowing Milkweed Seeds Part 1: Supply Checklist. 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