Butterfly Milkweed (Asclepias tuberosa)
Butterfly Milkweed (Asclepias tuberosa)
Type: Perennial Herb
Flower Structure: Upright terminal umbels; seed heads look like long horns
Bloom Period: Summertime
Bloom Color: Orange
Pollinators: Butterflies (including migrating Monarchs, also a host plant), Moths, Hummingbirds, Bees
Habit: Clumping (1.5 to 3 feet in height, 1 to 2 feet in width)
Light: Full Sun
Hardiness: Zone 3b to Zone 9b
Ships: 4 inch pot
Ship Dates: Spring shipping begins mid-April, Autumn shipments start in mid-October
Sometimes simply known as Butterfly Weed, this sun-kissed orange blooming species of milkweed is one of the most attractive varieties, and a notable favorite among favorites of the Monarch, alongside Swamp Milkweed (far more beautiful, as well, then the name alone might conjure).
Monarch’s rely on these and other milkweeds as a nectar source, but most of all as a host for their caterpillars, who form stunning chrysalises that, somehow, perhaps even outshine the butterfly itself.
The monarch population has been adversely effected by the loss of milkweeds such as Butterfly Milkweed from much of the North American landscape, and they’ve suffered losses of 40% each of the last two years. These plants are wonderful, can naturalize quite readily, and hold promise to replenishing the monarch populations, especially along their two major migrating paths – the Mississippi and the Atlantic coast.
Outside of a thirst for full sun, Asclepias tuberosa does quite well in poor soils and sandy soils, and is tolerant of dry spells. It’s relatively low maintenance, and brings a very bright, rich and cheery color to the garden. A color that will catch the eye of not just Monarchs, but many a pollinator including hummingbirds.
Bonus Tip: Mix and match with Colorado or Common for a fine in-ground arrangement and a mix of unique features – yarrow’s foliage and the horn-like seedheads of Butterfly Milkweed. In the process, you’ll make a summer-long welcome mat for two stunning butterfly species – the Painted Lady in addition to the Monarch.
Photo courtesy Laura Perlick.