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Largeflower milkweed

Asclepias connivens

Also called Large Flower Milkweed

Largeflower milkweed (Asclepias connivens) is a perennial milkweed native to wet areas of the southeastern United States, growing up to about 94 cm with greenish-yellow flowers in July and August. It needs consistently moist soil and full sun, and it dies back to the ground in winter.

Family
Apocynaceae (Dogbane family)
Grows as
Perennial
Light
Full sun, Part shade
Water
Keep the soil consistently moist; it is an obligate wetland species.
Soil
Moist, heavy or clay-rich soil, or wet garden soil.
Temperature
Hardy in warm temperate to subtropical climates; dies back in winter.
How easy
Moderate
Native range
SE. U.S.A.
Climate
subtropical

About

Asclepias connivens is a species of milkweed, commonly called Baldwin's milkweed or the largeflower milkweed. It is an obligate wetland species, native to the southeastern United States (Alabama, Georgia, Florida).

It was first identified in 1817 by American botanist, William Baldwin. The name connivens refers to the conniving (converging) hoods over the stigma. The plant produces 3⁄4 in (19 mm) greenish-yellow flowers, blooming between July and August and 5–7 in (130–180 mm) seed bearing follicles from mature fruit. The stalks of the plant grow up to 37 in (94 cm) in height. The leaves are 3.9–4.7 in (9.9–11.9 cm) long and 1.2–2.0 in (3.0–5.1 cm) wide and are opposite and sessile. The plant dies back to the ground in winter.

Other Asclepias plants

Cartwheels · Cartwheels · Whitestem milkweed · Asclepias alpestris · Asclepias amabilis · Asclepias ameliae · Clasping milkweed · Arizona milkweed · Asclepias apocynifolia · Sand milkweed · Spider milkweed · Asclepias atroviolacea

Text excerpted from the Wikipedia article Asclepias connivens 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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