Biennial & Perennial Weeds
VERVAIN: BLUE & HOARY Verbena hastata and Verbena stricta Life Cycle: Perennial Plant Description:
Erect perennial grows 3 to 5 feet tall. Reproduces by seed and short rhizomes. Lance-shaped leaves are opposite or whorled with serrated or toothed edges. Flowers are blue to purplish or pink in straight spikes, which are arranged in upright panicles. Hoary vervain has very similar appearance.
Treatment: Apply 12 to 16 fluid ounces of DuraCor ® herbicide per acre + 16 fluid ounces of 2,4-D amine per acre. Use lower rate
when weeds are small and actively growing. Increase rate as season progresses and plants become more mature, prior to flowering. This species has a square stem.
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