2023 Range & Pasture - Weed ID Guide

Annual Weeds

HORSEWEED or MARESTAIL Conyza canadensis Life Cycle: Annual Plant Description:

A tall growing winter or summer annual. Stem usually has short bristly white

hairs. Its many leaves are alternate and lance-shaped. Blooms June to August with numerous tiny, inconspicuous flowers. Treatment: Apply 12 to 16 fluid ounces of DuraCor ®

herbicide per acre or 1.5 to 2.1 pints of GrazonNext ® HL herbicide per acre.

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