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Hairy Sun Cup

Camissoniopsis hirtella

Also called Santa Cruz Island Suncup, Hairy Suncup

Hairy Sun Cup
Photo: Stickpen, Public domain

Hairy sun cup is a hairy, low-growing annual wildflower of the evening-primrose family, native to coastal and inland hills of California and Baja California, often appearing on recently burned slopes. Grow it from seed in full sun with well-drained soil and little summer water.

Family
Onagraceae (Evening-primrose family)
Grows as
Annual
Light
Full sun
Water
Water lightly after sowing to establish seedlings, then let rain do the work; avoid soggy soil.
Soil
Sandy or gravelly, well-drained soil; poor soil is fine.
Temperature
Mild Mediterranean-type climate, roughly 10–30 °C; frost-tender as a seedling.
How easy
Easy
Native range
California to Mexico (N. & C. Baja California)
Climate
subtropical

About

Camissoniopsis hirtella is a species of evening primrose known by the common name Santa Cruz Island suncup. It is native to California and Baja California, where it grows on the slopes of coastal and inland hills and mountains, especially in areas that have recently burned. It is an annual herb producing a hairy stem up to about half a meter in height. Most of the leaves are located in a basal rosette at ground level and are oval in shape and a few centimeters in length. The nodding inflorescence produces flowers with sepals coated in long, glandular hairs, and bright yellow petals under a centimeter long each. The petals sometimes have red dots at their bases. The fruit is a coiling capsule up to 2 centimeters long.

Other Camissoniopsis plants

California Suncup · Beach Evening Primrose · Hardham's Evening Primrose · Intermediate Suncup · Lewis' Evening Primrose · Santa Lucia Suncup · Miniature Suncup · Paleyellow Suncup · Suncups

Text excerpted from the Wikipedia article Camissoniopsis hirtella 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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