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Honeyvine

Cynanchum laeve

Also called Sandvine, Climbing Milkweed, Smooth Swallowwort, Honeyvine Milkweed

Honeyvine
Photo: Robert H. Mohlenbrock, Public domain

Honeyvine is a twining perennial vine of the milkweed family, found along roadsides, fences and fields in eastern and central North America. It is a weedy plant whose deep, brittle root system makes it very hard to eradicate.

Family
Apocynaceae (Dogbane family)
Grows as
Climber, Perennial
Light
Full sun
Temperature
Hardy in temperate climates; no specific limits given
How easy
Easy
Safety
Toxic: Milky sap and other parts can cause eye irritation on contact and are toxic if eaten in large quantities.
Native range
C. & E. U.S.A.
Climate
temperate

About

Cynanchum laeve is a vining perennial herb native to eastern and central U.S. states and Ontario. Common names include sand vine, honeyvine, honeyvine milkweed, bluevine milkweed, climbing milkweed, and smooth swallow-wort. The root system of C. laeve can cause it to be very difficult to eradicate, especially in agricultural fields. It is a larval food of monarch butterflies and milkweed tussock moth larvae. C. laeve can cause eye irritation if touched and can be toxic to humans and livestock if consumed in large quantities.

Where it grows

Cynanchum laeve occurs in the eastern and central United States and Ontario, Canada. C. laeve can be found in wetland areas in the arid West, Atlantic and Gulf Coastal Plain, Eastern mountain and Piedmont, the Great Plains, Midwest, and the North Central and North Eastern United States. Cynanchum laeve typically lives in disturbed habitats such as thickets, low moist fields, riverbanks, fence rows, and cultivated fields.

Other Cynanchum plants

Cynanchum acidum · Stranglewort · Gulf coast swallow-wort · Holostemma Creeper · Cynanchum daltonii · Excelsior · Cynanchum gentryi · Cynanchum gracillimum · Cynanchum guehoi · Cynanchum haughtii · Cynanchum hooperianum · Cynanchum macrolobum

Text excerpted from the Wikipedia article Cynanchum laeve by its contributors, under CC BY-SA 4.0; the excerpts and the care summary drawn from them are shared under the same licence.

The care summary was written by AI (Claude, Anthropic) from the sources on this page, with general growing knowledge where they are silent. Check before relying on it.

Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.

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