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Yaupon blacksenna

Seymeria cassioides

Also called Yaupon black senna, Senna Seymeria

Yaupon blacksenna
Photo: Ryan Watson, CC BY 4.0

Yaupon blacksenna is a small annual wildflower from the southeastern US coastal plain that grows as a root parasite on pine trees. It is not a garden plant and is hard to cultivate, since it depends on a living pine host.

Family
Orobanchaceae (Orobanch family)
Grows as
Annual
Light
Full sun
Water
Keeps moist soil in its native pine savanna and swamp habitats; it is usually left to the host's roots rather than watered directly.
Soil
Moist, sandy or acidic soil typical of pine savannas and sandhills.
Temperature
Warm subtropical conditions; not a reliable cold-hardy plant, and frost-tender where grown outside its native range.
How easy
Hard
Native range
SE. U.S.A. to Texas, Bahamas
Climate
subtropical

About

Seymeria cassioides, commonly called yaupon black-senna or senna seymeria, is a species of annual forb found in North America. It is a species of obligate hermiparasite found on various species of pine.

Where it grows

Within the United States S. cassioides can be found within the Coastal Plain region of the southeast. Its range stretches from Virginia to Florida and west to Texas. There also exist disjunct populations in the Bahamas.

Other Seymeria plants

Piedmont blacksenna · Blacksenna

Text excerpted from the Wikipedia article Seymeria cassioides 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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