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Whorled Mikweed
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| [Note Guidelines] Photographer's Note |
Whorled Milkweed, Asclepias verticillata, is a species of Milkweed that is locally common in Illinois, but nowhere nearly as ubiquitous as Common Milkweed, Asclepias syriaca. It seems to like soils that are at least a little on the dry side, sometimes sandy or gravelly, but will grow in soils that are heavier and mesic and even some that might be pretty damp for at least part of the year. At the Bartel Grassland which is mainly mesic to wet-mesic grassland, it is very abundant in several areas and is increasing.
It's a lot different than Common Milkweed: it has greenish white to white flowers and its linear leaves are very different than the broad, oval leaves that seem to be typical of many of our local Milkweed species. It can somewhat resemble Horsetails, Equisetum species when not in bloom. It's shorter than Common Milkweed, up to maybe 2 feet tall.
It's a perennial plant native to various open, often sloping habitats such as banks along interstate highways were large colonies are sometimes seen. It occurs in good quality prairie as well as more disturbed sites. |
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