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Spiny Sowthistle (Sonchus asper)

Spiny Sowthistle (Sonchus asper)Click to buy this image on ADOBE STOCK

Spiny Sowthistle (Sonchus asper)

Spiny Sowthistle is a spring or summer annual herbaceous wildflower, with spiny leaves and yellow flowers and is often considered a weed because of its aggressive spread. Prickly Sowthistle typically grows in full sun, moist to slightly dry conditions, and different kinds of soil, including loam, clay-loam, and shallow gravelly soil. It is often found in lawns, waste places, and roadsides. The size of this plant varies depending on the moisture and fertility of the soil. It can bolt upward and form flowerheads very quickly during the summer. In a garden setting, be careful not to let this plant go to seed. The seeds spread by wind and water and the plant can tend to take over a site.



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For more information on wildflowers check out the following books.

Newcomb’s Wildflower Guide

Botany in a Day: The Patterns Method of Plant Identification

Buy Texas Wildflower Seeds

More photos of the Spiny Sowthistle (Sonchus asper) Flowers

Spiny Sowthistle (Sonchus asper) Spiny Sowthistle (Sonchus asper) Spiny Sowthistle (Sonchus asper)


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