Butterfly weed requires relatively little work to grow. The plant thrives in broad sunlight and poor, dry, sandy, or gravelly soil with a slightly acidic or neutral pH, and is suited for growing in USDA plant hardiness zones 3 through 9.
Butterfly weed plants are easy to establish from seed, although blooms may take two or three years to appear. Butterfly weed is drought tolerant once planted and flowers consistently from year to year. Keep in mind that butterfly weed produces long, strong roots that make transplanting difficult, so put it in a permanent location in the garden.
How do you plant butterfly weed tubers?
Butterfly Weed Planting Instructions. Sow butterfly weed seeds straight into the ground in the fall for spring sprouts, or sow indoors after cold stratification in the winter for winter sprouts. Direct sowing is the favored method of propagation due to their long taproots.
Do I cut back milkweed in the fall?
During the fall and winter months, trim the milkweed stems to about 6 inches in height to dissuade monarchs from establishing winter-breeding colonies. Cutting back the milkweed will also aid in the removal of any OE spores that may be present. As the leaves re-sprout, re-cut the milkweed every several weeks. Because tropical milkweed dies back naturally when it freezes, it may offer fewer problems in the northern monarch breeding region.
These instructions do not apply in south Florida (south of Orlando), where a distinct, non-migratory monarch population has existed for many years. In this location, however, native milkweed planting is still recommended.
Do you prune butterfly weed?
If you want to tidy up your butterfly weeds and encourage new development, cut them back by 1/3 to 1/2 in early spring before new growth begins. You might also wait until after the spring Monarch butterfly migration has gone before pruning.
Will butterfly weed bloom the first year?
Milkweed, also known as asclepias, is native to North America, and one of them, Asclepias tuberosa, has been named Perennial Plant of the Year by the Perennial Plant Association this year. This plant, sometimes known as butterfly weed or butterfly milkweed, has bright orange flowers that attract a variety of butterflies and bees with nectar and pollen. Butterfly weed’s leaf isn’t a favorite meal of monarch caterpillars, but it can help them survive. This drought-tolerant plant prefers a dry, sunny environment and is hardy in Zones 3 to 9.
Upright stems with clusters of bright orange flowers contrast attractively with the shiny green leaves of butterfly weed. Unlike other members of the genus, the stem sap is not milky. This milkweed is not invasive since it does not spread by runners like common milkweed (Asclepias syriaca). Although deer are not attracted to butterfly weed, aphids can be an issue in gardens and greenhouses.
This plant is expected to be in great demand in the next years. Butterfly weed blooms readily the first year after seeding, but there are a few crucial elements to remember if you want to grow it professionally.
This species displays some of the most extreme photoperiod reactions we’ve ever seen. It’s an obligatory long-day plant, which means it has to flower during long days. When grown at an average of 68° F, plants develop quickly under photoperiods of 14 hours or more, and begin flowering about eight to nine weeks after transplant. Plants that are exposed to photoperiods of 12 hours or less, on the other hand, die dormant after a few days (Figure 1, pictured above). Leaves droop, shoot growth appears to stop, and existing flower buds may suffocate (Figure 2). Unfortunately, simply reverting to longer days will not return the plants to active growth. A nine-week or longer cold treatment is required to break this dormancy; in our testing, all dormant plants treated to 41° F for 15 weeks bloomed.
It is critical to provide long days to plants in order to keep them actively growing. We propose at least 16 hours of daylight or four hours of night disruption illumination. A minimum intensity of 2 molm2s1 should be delivered by photoperiodic illumination. Use incandescent lights or LED bulbs intended to control blooming that emit both red and far-red radiation. Maintain these extended photoperiods for plants until natural daylengths reach at least 14 hours.
Butterfly weed has a huge tap root, making transplanting or dividing established plants difficult. It’s critical to utilize a well-drained medium in container production, so consider adding more perlite to a standard peat+perlite mix. During production and cold treatments, be careful not to over-water. The taproot attracts fungus gnat larvae, so keep an eye on the roots if your plants aren’t doing well.
Butterfly weed can grow up to 3 feet tall in the wild, but in container production, our plants were only 12 to 18 inches tall when they first bloomed. Sprays of daminozide (e.g., B-Nine, Dazide), paclobutrazol (e.g., Piccolo, Bonzi), and uniconazole (e.g., Piccolo, Bonzi) are apparently helpful for height management (e.g., Sumagic, Concise). To help fill out containers, use many plugs per pot or squeeze seedlings soon after transplant.
Is butterfly weed toxic to dogs?
Butterfly weed, milkweed, and chigger-plant are all popular names for plants in the genus Aesclepias, which includes the Aesclepias incarnata that you’re interested in. To put it another way, the genus is poisonous. The plant is harmful in all sections.
All portions of the plant are deadly in “large quantities,” according to various authorities, including North Carolina State University, the University of Pennsylvania School of Veterinary Medicine, the ASPCA, and the Wildflower Center. The plant looks to be more likely to be consumed by cattle.
Poisoning symptoms include excessive salivation, incoordination, and severe seizures. Bradycardia or tachycardia, arrhythmias, hypotension, and hypothermia are the first indicators of poisoning. Death can happen anywhere between 1-3 days after intake.
The plants, on the other hand, are important food sources for butterflies, particularly Monarch butterflies. Birds avoided eating butterflies whose larvae relied exclusively on milkweed, according to naturalists in the mid-nineteenth century. The feeding larvae accumulated emetic cardiac glycosides, which were later found to be retained and concentrated in adult butterflies. Birds that ate the butterflies that contained these glycosides vomited quickly after eating them, and they learnt to avoid butterflies with the Monarch butterfly pattern. Viceroy butterflies have evolved the capacity to imitate the monarch’s look, allowing them to avoid predation by birds mistaking the mimic for the unappealing monarch.
When should I start my butterfly weed?
When the seed pods of butterfly weed begin to split, harvest them. In the late fall, seeds can be sown immediately outdoors or begun indoors.
In early to mid-November, build up the soil in a protected spot before spreading seeds outside.
Cover the seeds with about 1/4 inch of dirt after scattering them over the prepared seed bed.
Seed germination is aided by the cold, damp conditions of winter.
In the spring, seedlings should sprout.
When the seedlings are 3 to 4 inches tall, carefully move them to their permanent places.
Fill a flat with commercial germination material to start seeds inside (such as Jiffy Mix).
The medium should be moistened.
Scatter the seeds on the germination medium’s surface and lightly push them into the substance.
Add another 1/4 inch of germination mix on top of the seeds.
Moisten the additional material with care.
Place the bundled flat in the refrigerator after sliding it into a plastic bag.
Refrigerate the flat for a period of 4 to 6 weeks.
Remove the flat from the refrigerator after 4 to 6 weeks and set it in a room with a temperature of 70 to 75 degrees Fahrenheit.
In 3 to 4 weeks, the seeds should start to germinate.
(If no seedlings appear after four weeks, refrigerate the flat for another four to six weeks and continue the process.)
As soon as seedlings appear, remove the flat from the plastic bag and place it under fluorescent lights in a 60 to 65 degree Fahrenheit environment.
When the seedlings are 1 to 2 inches tall, transplant them into individual pots.
Continue to develop the seedlings indoors for a few more weeks under fluorescent lights.
Place the seedlings in a dark, protected spot outside before planting, then gradually expose the seedlings to greater periods of direct sun.
After the seedlings have been hardened off for 10 to 14 days outside, plant them in their permanent positions.
Where is the best place to plant milkweed?
Milkweed plants in their early stages require a lot of diffuse light to thrive. Plant in a position that receives plenty of direct sunlight.
- Swamp Milkweed, as its name suggests, thrives in moist environments, making it ideal for wet meadows and rain gardens.
- Tropical Milkweed thrives in hot, humid climates and can be cultivated as an annual in the northern states.
Milkweed prefers not to be transferred since it has enormous, deep root systems.
- Butterfly Weed, Whorled Milkweed, and Common Milkweed should be planted 18″ apart.
- Swamp Milkweed grows to form clumps up to 36″ across when it matures. Plant Swamp Milkweed and its cultivars between 30″ and 36″ apart, or plant them closer and thin them down as they grow in.
Milkweed plants can be sown in the spring or the fall. Your milkweed plants will most likely be dormant when they arrive in the spring, with no green leaves above the soil level. This is quite normal. All of your milkweed’s energy is being spent on creating a robust root system at this point in its development. After you plant your milkweed, you should notice it ‘wake up’ as the earth warms and begin to produce leaves milkweed is sometimes slower to emerge from hibernation than other perennials in your garden. While they are dormant, be careful not to overwater them.
Planting in the fall allows your plants to establish themselves before the winter. This perennial plant will return in late April in locations with cold winters.
Growing Milkweed from Seed: The easiest approach to grow milkweed from seed is to follow Mother Nature’s lead and plant them in the fall. If you truly want to start your seeds in the spring, you’ll need to use cold stratification to break their dormancy, which we discuss in our guide to beginning milkweed from seed.
Can you dig up milkweed and replant?
Small Milkweed plants can usually be transferred by digging out the rhizome root and planting it. This works best when the plants are young, such as when they first emerge in the spring or when new plants emerge from the rhizome root system. They can be planted at any time of year, but the best time is when the weather is chilly.
How do Milkweed Rhizome roots work?
Long lateral roots that bore horizontally through the earth are known as rhizome roots. As they come across impediments, they will move above or below them, sending new shoots up to the surface to form new plants.
New Rhizome-grown Milkweed plants will not have formed taproots!
As a result, transplantation is far more likely to succeed.
Rhizomes have two functions.
1 – in addition to seeds, they provide another means for the plant to spread and reproduce.
They also act as a source of energy for both new and old plants.

