Phonetic Spelling:ZAN-thee-um stroo-MAR-ee-um
Genus:Xanthium
Species:strumarium
Family:Asteraceae
Cocklebur is a summer annual weed belonging to the daisy family, originally from North America but now found in various regions worldwide. In North Carolina, it thrives in all environments. These plants typically reach heights of 2 to 4 feet and favor moist to wet sandy loam or loamy soils, thriving in full sun to partial shade, though they cannot survive in complete shade.
The plant exhibits minimal branching, with only short side stems emerging from the leaf axils. The main stem culminates in a spike-like raceme, resembling those found in the leaf axils. Cocklebur is monoecious, meaning it possesses both male and female reproductive organs on the same plant. Each raceme bears several male compound flowers in its upper section and female compound flowers in its lower section. Pollination is facilitated by the wind, and the plant reproduces through self-seeding, often resulting in the formation of colonies.
Historically, the seeds of cocklebur served as a food source for the now-extinct Carolina Parakeet, the only parrot species native to eastern North America.
In terms of pests, diseases, and other plant-related issues, cocklebur's vigorous growth can pose challenges in pastures, fields, roadsides, stream banks, dunes, and poorly drained areas. The burs of the plant cling to clothing and animal fur, aiding in their dispersal through short hooked prickles. Additionally, young cocklebur seedlings release toxic chemicals that can hinder the germination of nearby plants or even kill other seedlings.
Xanthium strumarium Feature Summary
Xanthium strumarium Image Gallery
