Spring sowthistle or Prickly sowthistle
| Botanical Name | Sonchus asper |
| Common Name | Spring sowthistle or Prickly sowthistle |
| Family | Asteraceae - Aster |
| Description | Annual introduced from Eurasia. Can accumulate nitrates. Very rarely consumed by livestock. Found in moist disturbed sites, waste areas, gardens, roadsides, cultivated fields. Leaved pinnatifid (leaves that are arranged like feathers) to lobed. Crinkly at the margins. Prickly spines |
| Mature Size | 4 -– 40 inches |
| Bloom | June-October. Corolla is made up of numerous yellow ray florets. |
| Interesting Facts | Latin asper means rough or prickly. |
| Traditional and Medicinal Uses | None found. |
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Photo for SFBG by Janice Tucker
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