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Feltleaf bluestar

Amsonia tharpii

Also called Tharp's Bluestar, Tharp Blue Star

Feltleaf bluestar
Photo: Michelle W. (鍾偉瑋), CC BY 4.0

Feltleaf bluestar is a small desert perennial with a woody taproot, pale blue to white flowers and narrow whorled leaves. It is a wild species of dry shrubland in New Mexico and west Texas and is rarely grown in gardens, so care is based on its native dry habitat.

Family
Apocynaceae (Dogbane family)
Grows as
Perennial
Light
Full sun
Water
Water sparingly and let the soil dry out fully between waterings; it tolerates drought well.
Soil
Sharp, well-drained sandy or gritty soil.
Temperature
18–35 °C; tolerates hard frost once established, but protect young plants below -10 °C.
How easy
Moderate
Native range
SE. New Mexico to W. Texas (Pecos Co.)
Climate
desert or dry shrubland

About

Amsonia tharpii is a species of flowering plant in the family Apocynaceae, known by the common names Tharp's bluestar and feltleaf bluestar. It is native to New Mexico and Texas in the United States.

This plant is a perennial herb with a woody taproot. It grows up to about 20 centimeters tall. The linear to lance-shaped leaves are each up to 3 centimeters long and are whorled about the stem. The leaves lower on the plant are wider than those near the top. The white, pale blue, or greenish flowers are borne in clusters at the stem tips. They are tubular and about 1.5 centimeters long. The fruit is a two-lobed follicle. The cylindrical seeds are about a centimeter long.

Other Amsonia plants

Fringed bluestar · Hubricht's bluestar · Jones' bluestar · Kearney's bluestar · Blue star · Eastern bluestar · Woolly bluestar · Bluestar

Text excerpted from the Wikipedia article Amsonia tharpii 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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