2024 Range & Pasture Western Rangeland Weed & Brush ID Guide

Annual Weeds

SMARTWEED, PENNSYLVANIA and TUFTED Polygonum pensylvanicum and Polyonum caespitosum Life Cycle: Annual Plant Description:

A summer annual weed that may reach 3½ feet in height. Leaves are elongated and often have a purple spotted “lady’s thumbprint” in the middle. Stems are branched and reddish. Pink or white flowers are small and clustered in terminal spikes at the ends of stems.

Treatment: Apply 16 fluid ounces of

HighNoon ® herbicide per acre. Increase rate as season progresses and plants become more mature.

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