
Should milkweed be cut back?
Though pruning isn't necessary, common milkweed may be pruned to keep it looking neat and tidy. Because milkweed is a host plant for the caterpillars of many butterflies, it may end up looking raggedy from defoliation. If you don't want to lose too much height, you can cut the plant back in early summer by about 50 percent.
Will milkweed come back if you cut it?
Milkweed thrives in a garden when cut or thinned regularly. It can pose a challenge for farmers, however, and cutting milkweed plants is not an effective way to remove them because they grow back from their long roots.
How to care for Milkweed summer through fall?
Swamp Milkweed Care
- Light. Full sun is best, but plants will tolerate part shade.
- Soil. While common milkweed is able to grow in average well-drained soil, swamp milkweed thrives in moist, medium to wet clay soil.
- Water. Keep this plant moist. If given a proper wetland environment, the swamp milkweed will likely not need watering throughout the growing season.
How to trim milkweed?
How Do You Stop Common Milkweed From Spreading?
- Seed Control. Another way of getting rid of milkweed is by controlling the seeds to stop the plant from spreading.
- Shading. A good way of controlling milkweed is by spreading a layer of mulch over an area where milkweed has been either cut down or removed in another way.
- Planting a competitive cover crop. ...
- Uprooting and removing the rhizomes. ...

When can I cut back my milkweed?
Cut back milkweed stalks in the late fall or winter, after they have produced seed pods and these seeds have had time to mature. Leave at least 6 inches of stalks to provide habitat for insects throughout the winter.
Do you cut milkweed back in the spring?
Perennial plants will benefit from being cut back in late winter to early spring. Wait until you see new basal growth and cut the old stems back to about 6 inches (15 cm.) from the ground. Another method of milkweed pruning is to cut the plant back a third of its height.
How do you prepare milkweed for winter?
Simply cut last year's stems back to the ground with clean, sharp pruners. Another reason I prefer to cut milkweed back in spring is so that any seed pods that formed late in the season have time to mature and disperse. Milkweed plants are the only plant that monarch caterpillars eat.
Will milkweed grow back if mowed?
The butterflies strongly prefer fresh, young milkweed plants to older ones, Haan said. And that's where the weed-whacking comes into play. Chopping down milkweed stems won't kill them – the plants have an underground network of buds, so stems pop right back up just as soon as they're sliced down.
Will milkweed come back next year?
Answer: Milkweed should be planted/transplanted in the spring. It is a perennial and will come back every year but the plant will need all year to prepare for the coming winter. Milkweed planted in the fall will likely not survive the winter.
Does milkweed survive winter?
Will milkweed come back every year? Milkweed is a hardy perennial that can survive down to zone 3 and comes back every year in spring. While the foliage itself dies back and the plant goes dormant in the winter months, the rootstock is still very much alive and does not need protection.
Why are the leaves on my milkweed turning yellow and falling off?
Chlorosis is a yellowing of leaf tissue due to a lack of chlorophyll. Possible causes of chlorosis include poor drainage, damaged roots, compacted roots, high alkalinity, and nutrient deficiencies in the plant.
How do you maintain milkweed?
Common milkweed does not need watering except in the driest conditions. Water deeply, giving the plants between one to two inches of water, then wait until the top inch of soil is dry before watering again. Overwatering common milkweed can result in a lethal fungus.
Why is my milkweed falling over?
If you notice Swamp Milkweed leaves drooping or wilting, you may want to check if the plant is getting enough water. This can be a sign of drought.
What happens to monarch caterpillars in winter?
While monarch eggs and caterpillars can survive some exposure to cold, these cooler temperatures slow their development time and prolonged exposure may cause sub-lethal effects (e.g. monarchs may take longer to develop, leaving them more vulnerable to disease and predation).
Why is my milkweed not flowering?
In general, milkweed may not flower in the first year of growth, because it is investing its resources in growing a strong root system. Also, if there is excess nitrogen in the soil the plant may not flower, so do not fertilize milkweed.
Should I cut back my milkweed in the winter?
It is recommended to prune the milkweed stalks to about 6 inches in height during the fall and winter months to discourage monarchs from establishing winter-breeding colonies. Cutting back the milkweed will also help to eliminate OE spores that may be present on the plant.
How do you keep milkweed from getting leggy?
Cut all the unhealthy woody branches. I also like to leave the plant stems 6 to 12 inches long when I'm done and with no leaves still attached. Clear them all off. This will promote new growth and make your plant fuller, and if you had any nasty OE spores on your plant, they are all gone now.
Can milkweed spread?
Common milkweed (Asclepias syriaca) is a perennial plant that can be found in a wide range of habitats including roadsides, fields, and gardens. It is native to North America and reproduces primarily from seed. Once it is established it can spread from its rhizomatous root system.
Where should you not plant milkweed?
It is not recommended to plant milkweed within 10 miles of the coast in central and northern California where milkweed did not occur historically. Instead, plant a variety of flowers native to your region that provide nectar from early spring through fall to support monarchs and other pollinators.
Do you need to plant milkweed every year?
Since milkweed is a perennial plant, you won't need to replant it every year. You can harvest the seeds from your new plants and grow them in other parts of your yard or garden if you desire.
Are coffee grounds good for milkweed?
GROUND THEM: Those naughty aphids need a time out, so keep them away from their favorite milkweed plants by sprinkling coffee grounds around them.
Should you deadhead milkweed?
Deadhead milkweed flowers to prolong blooming during summer. At the end of the season, allow the plants to form those attractive pods that look great in dried-flower arrangements. Silky, parachute-like seeds will begin to drift out of the mature pods in late fall.
How long does milkweed last?
All milkweeds are herbaceous perennials, meaning they live for more than two years. In fact, most milkweeds will live for several years if cared for properly.
What animal eats milkweed?
Deer and rabbits have been reported to eat milkweed leaves, and there are many other insects that feed on milkweed such as milkweed bugs, tussock moths, queen butterfly larvae, and more. Nectar and pollen from milkweeds are important food sources for many pollinators, in addition to monarch butterflies.
Should I remove aphids from milkweed?
The bright yellow aphids found on milkweeds are destructive, non-native pests. It is important to remove and dispose of them at first appearance or they will quickly infest the plant, making it difficult for monarchs to use the plant.
What can you feed monarch caterpillars if you run out of milkweed?
Most enthusiasts have found most success with butternut squash as a substitute for milkweed leaves. Some of the other vegetables that have successfully been fed to Monarch caterpillars in the last instar (last few days) are cucumber, zucchini, and pumpkin.
Are coffee grounds good for milkweed?
GROUND THEM: Those naughty aphids need a time out, so keep them away from their favorite milkweed plants by sprinkling coffee grounds around them.
Why is my milkweed falling over?
If you notice Swamp Milkweed leaves drooping or wilting, you may want to check if the plant is getting enough water. This can be a sign of drought.
How to tell if milkweed is perennial?
If the milkweed is a perennial, like Asclepias curassavica (tropical milkweed) pictured above, you’ll notice tiny leaves growing from the base of the plant at some point after the upper stems have been consumed. Wait for that. Then cut back stems to the new growth and the plant will take off from there.
Why is milkweed seeding early?
There are so many types of milkweed, and so many factors that could possibly contribute to the plant’s seeding early: wacky weather, plant stress (watering issues, crowding, sudden temperature changes), or just what that type of milkweed does.
Why do pruned plants produce more foliage?
The pruned plants would tend to produce more foliage because pruning causes a chemical reaction in plants once you remove the apical-dominant growth tip (which exudes auxin – a chemical that prevents other branches from being the “leader”). But given that you work for the Audubon, you probably know that already.
Does milkweed die in winter?
I think what you’re referring to is the notion that some types of milkweed that doesn’t die back over winter can carry a pathogen that kills Monarch butterfly caterpillars. Tropical milkweed doesn’t die back in warm-winter climates and so it is recommended to cut it back to about 4″ tall in December to clear the plant of any possible pathogens. The regrowth will be clean. So I suppose others may suggest pulling and starting anew each year. But you don’t have to do that if you cut them back.
Is swamp milkweed perennial or annual?
You mentioned that you are growing swamp milkweed, Asclepias incarnata. Technically it is a perennial, but if you run into issues like I did (no leaves emerging) then re-seed and cut back old foliage. Perenni al milkweeds grow back year after year. They provide habitat for traveling Monarch butterflies.
Do milkweed bugs spread to other plants?
They don’t mind competition from other pests (aphids, milkweed bugs, etc.) and they generally don’t spread to other plants in your garden. Let them be and they will die or become food for hunger beneficial insects in your garden instead. Sarah 22 Apr 2018Reply.
Can you use stakes to prune milkweed?
You can prune them, but yes, you can also use stakes. Gardener’s Supply sells a lot of “grow-through” type stakes and supports that allow you can keep those tall flowers upright. It may be too late for grow-through supports now, but if you prune the milkweed back you might be able to install one.
How to kill milkweed before it spreads?
The Extension recommends killing milkweed before it spreads in crop fields by using repeated applications of glyphosate herbicide. With herbicide usage, however, comes the risk of harm to beneficial flora and fauna, including the monarch butterfly. References.
What is milkweed?
Several kinds of milkweed plants grow in the United States. They include swamp milkweed (Asclepias incarnata), which is a U.S. native and hardy in U.S. Department of Agriculture plant hardiness zones 3 through 6. It attracts butterflies and grows 4 to 5 feet tall and 2 to 3 feet wide. Swamp milkweed's fragrant blossoms are mauve, pink or white. Common milkweed (Asclepias syriaca) is a North American native, growing in the United States and Canada. Its flowers appear in the middle of summer, and it is hardy in USDA zones 4 through 9. Originally from South America, blood flower (Asclepias curassavica) also grows in the United States. It is hardy in USDA zones 9 through 11 and reaches 2 to 3 feet tall with a spread of 1 1/2 to 2 feet. Its flowers are reddish orange and have a yellow hood. Blood flower attracts hummingbirds and bees as well as butterflies. It is considered invasive in some U.S. states.
Why are monarch butterflies on the decline?
Monarch butterflies are on the decline because of changes to their habitat, including herbicide and pesticide usage, weather conditions, protozoan parasite infestation and the eradication of milkweed. Monarch butterflies lay their eggs on milkweed plants, and the hatched monarch larvae need milkweed leaves for nourishment.
Why is milkweed important to butterflies?
Milkweed (Asclepias spp.) is valued primarily because its nectar attracts butterflies and because its leaves are the sole food source for monarch butterfly caterpillars. Many people like milkweed for those reasons as well as for its fragrant, sweet-scented blossoms. Milkweed thrives in a garden when cut or thinned regularly.
Why do monarch butterflies lay eggs on milkweed?
Monarch butterflies lay their eggs on milkweed plants, and the hatched monarch larvae need milkweed leaves for nourishment. Therefore, an adequate supply of milkweed is essential to sustain the monarch butterfly population. Many people plant milkweed in their home gardens to help the survival of the monarchs.
How to attract butterflies to milkweed?
In order to attract the most butterflies, plant multiple milkweed seeds or plants together. The seeds can be planted indoors in cool climates and transplanted outside after danger of frost has passed. Plant seeds 1/8 inch deep, and keep them moist for three weeks. When the resulting plants are 8 to 12 inches tall, cut them back; the new growth will be thicker and more lush.
Where does milkweed grow?
Common milkweed (Asclepias syriaca) is a North American native, growing in the United States and Canada. Its flowers appear in the middle of summer, and it is hardy in USDA zones 4 through 9. Originally from South America, blood flower (Asclepias curassavica) also grows in the United States.
How to propagate milkweed?
Milkweed may be propagated by green stem cuttings, taken in the spring, dusted with hormone root powder and placed in moist sand or potting soil. Cuttings can be planted directly in a sunny part of the garden in 6 to 10 weeks. Advertisement.
What happens if you break a butterfly's stem?
Warning. When broken, the stems and leaves release a toxic, milky white sap that can be irritating to the skin. If you get the sap in your eyes, Butterfly Encounters recommends seeking medical attention. When pruning or taking cuttings, wear gloves to protect your skin.
Can you prune milkweed before it splits?
You may wish to prune off the brown seed pods before they split open because the plant self-seeds easily. Once established, milkweed can be challenging to remove due to its mat-like rhizomes, though these rhizomes make the plant useful for erosion control.
Is milkweed poisonous to eat?
Though parts of the plant are edible if properly prepared, related species in the milkweed genus are toxic if ingested, according to the North Carolina State University Extension. Symptoms may include vomiting, weakness and spasms. Advertisement.
Is milkweed drought tolerant?
Department of Agriculture plant hardiness zones 3 to 9, where it prefers full sunlight and well draining soil. The plant is quite drought tolerant and prefers somewhat dry, poor soils . You may wish to prune off the brown seed pods before they split open because the plant self-seeds easily.
Can milkweed be planted in a butterfly garden?
Milkweed is a low maintenance plant that will generally do fine when left to its own devices. The plant is seldom bothered by deer. And it and can have a naturalizing effect in a butterfly-oriented garden. Milkweed may be propagated by green stem cuttings, taken in the spring, dusted with hormone root powder and placed in moist sand or potting soil. Cuttings can be planted directly in a sunny part of the garden in 6 to 10 weeks.
How to keep monarchs from breeding in winter?
It is recommended to prune the milkweed stalks to about 6 inches in height during the fall and winter months to discourage monarchs from establishing winter-breeding colonies. Cutting back the milkweed will also help to eliminate OE spores that may be present on the plant. Re-cut the milkweed every few weeks as leaves re-sprout.
Does milkweed kill monarchs?
Tropical milkweed might pose fewer problems in the northern monarch breeding range because it dies back naturally when it freezes. These recommendations are not applicable in south Florida (south of Orlando), where a distinctive, non-migratory population of monarchs has long been established.
How to disinfect pruning shears?
Wipe the pruning shears with a cloth soaked in rubbing alcohol to disinfect them before pruning, and then wipe them again when moving between plants. Wear heavy gloves to protect your hands from the sap, which can cause skin irritation.
What is butterfly weed?
Butterfly weed (Asclepias tuberosa) produces green foliage through spring and summer and clusters of small red, orange or yellow flowers. It grows in U.S. Department of Agriculture plant hardiness zones 4 through 10. The plant dies back each winter, but it returns from its perennial root system each year if it's kept properly pruned.
Can butterfly weed be cut?
Butterfly weed flowers are suitable for cut flower arrangements, but the stems leak sap after cutting. Cut the flower stems back to a leaf. Sear the cut end lightly with a lit match or lighter to stop the flow of sap before adding them to your arrangement or placing them in a vase. Monarch butterfly caterpillars feed on the leaves of this plant exclusively, so consider allowing them to munch on it in some areas of your yard.
When to cut milkweed in Cedar Rapids?
Don't cut milkweed until the end of September at the earliest. Ideally wait until October as monarchs can still be out until then. (The Gazette)
When to cut monarchs?
A: Cut them at the end of September at the earliest. Monarchs can still be out into October. Wait until you haven't seen any monarchs, if you can.
Why cut back milkweed?
Another reason I prefer to cut milkweed back in spring is so that any seed pods that formed late in the season have time to mature and disperse. Milkweed plants are the only plant that monarch caterpillars eat. Sadly, because of today’s heavy use of herbicides, there is a shortage of safe habitats for milkweed and, therefore, a shortage of food for monarch caterpillars.
When should I trim milkweed?
Pruning can be done in fall but isn’t really a necessary part of winterizing milkweed plants. Whether you cut back your plants in fall or spring is totally up to you. Milkweed plants in winter are valued by birds and small animals who use their natural fibers and seed fluff in their nests. For this reason, I prefer to cut milkweed back in spring. Simply cut last year’s stems back to the ground with clean, sharp pruners.
How many different types of milkweed are there?
With over 140 different types of milkweed, there are milkweeds that grow well in almost every hardiness zone. Winter care of milkweed depends on your zone and which milkweed you have.
When does milkweed germinate?
They lay dormant in garden debris and snow through winter, and germinate perfectly in spring with milkweed plants everywhere by midsummer. Now I let nature take her course.
Can milkweed be winterized?
Winterizing Milkweed: Caring For Milkweed Plants In Winter. Because my favorite hobby is raising and releasing monarch butterflies, no plant is as close to my heart as milkweed. Milkweed is a necessary food source for adorable monarch caterpillars.
Can you mulch milkweed in winter?
In fact, no milkweed plant will object if you want to give its crown and root zone some extra winter protection.
Is milkweed good for monarch caterpillars?
Milkweed is a necessary food source for adorable monarch caterpillars. It’s also a beautiful garden plant that attracts many other pollinators, while not requiring much maintenance. Many wild milkweed plants, often considered weeds, will grow happily wherever they sprout without any “help” from gardeners. Though many milkweed plants need only the ...
When to cut off milkweed seeds?
Milkweed plants are known to spread so if you do not have room for more milkweed plants, cut the pods off in the fall when the pods are tan and the seeds are coffee brown. You can then give these seeds out to friends and family. Some birds are known to use the silky floss of milkweed pods to build their nests.
What birds use milkweed pods?
Some birds are known to use the silky floss of milkweed pods to build their nests. The vermillion flycatcher, black-capped chickadees and Baltimore orioles are some of the known species that use milkweed floss for nest-building. So, once you have harvested seeds, you can toss the fluff back outside!
How to prolong blooms in early summer?
Deadheading . Removing flowers that have wilted, also known as deadheading, is a great way to prolong blooms in the early and mid-summer. After the first flush of flowers, simply cut off the flower cluster above the topmost leaves on the stem. This will cause the plant to branch out and produce a second flush of flowers.
Is milkweed a perennial?
In Nebraska, we have 17 native varieties of milkweed . These native milkweed are perennials, meaning they come back year after year. Their aerial parts (flower, leaves, stem) die back but their rootstock remains alive throughout the winter.
