Physical Setting
Climate
Adaptations
Tucson Plants
Tucson Animals
External Resources
Physical Setting
Climate
Adaptations
Tucson Plants
Tucson Animals
External Resources
PlantsNative TreesNative ShrubsNative CactusesWildflowersOther Plants
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Spiny Sowthistle (Sonchus asper)
spiny sowthistleDESCRIPTION: Exotic (Europe) annual to 5'. Flowers dandelionlike to 1.25" wide. Leaves simple, toothed, triangular, clasp stem, dark green to 7" long. Seed heads in a soft puff. Compositae (Sunflower) Family.
NATURAL HISTORY: Flowers bloom February to April.

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