Common name: Cocklebur
Origin: Central America
U.S. Distribution: Eastern
Height: Up to 5 ft.
Foliage: Alternate, simple, long petioled, broadly ovate-cordate, somewhat lobed
Flowers: Staminate flowers in short terminal spikes, pistillate flowers in in axillary clusters
Burs are oval, light brown with numerous prickles, hooked at the end
Bloom time: August - September
Habitat: Abandoned land, poor pastures, roadsides, bottomlands, vacant lots
Soil: Rich cultivated soils, also alluvial soils
Other: Spiny burs are scattered by hooking onto clothing and fur. The
seedlings are poisonous especially to cattle and pigs because of a toxic
glucoside (xanthostrumarin). The toxicity decreases as the leaves develop.
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Flowers and Indoor Plants