horseweed
| COMMON NAME: | Horseweed | |
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| SCIENTIFIC NAME: | Conyza canadensis | |
| FAMILY: | Asteraceae | |
| LIFECYCLE: | Annual | |
| FEATURES: | In the vegetative phase- dense lanceolate leaves pubescent at base, leaves alternate, plant rosette- like. Reproductive phase- plant bolts rapidly producing a large panicle with numerous small heads, seed contain a pappus facilitating wind dispersion, plant 4 to 6 feet tall. |
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| DESCRIPTION: | Tall growing annual plant common along roadsides and prior to planting crops. One of the first weeds to develop broad-scale resistance to glyphosate (Roundup). (Photos courtesy of Dr. Chris Main). |
 Broad View |
 Broad View |