Alberta Invasive Plant Identification Guide
Alberta Invasive Plant Identification Guide
Alberta Invasive Plant Identification Guide
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Montana State University <strong>Invasive</strong> <strong>Plant</strong> <strong>Identification</strong> <strong>Guide</strong><br />
Dyer’s Woad<br />
Isatis tinctoria, Brassicaceae (Mustard Family)<br />
Category: Prohibited Noxious<br />
•Life cycle: Winter annual, biennial or short-lived perennial.<br />
•Root: Taproot and some lateral roots.<br />
•Leaves: All leaves bluish-green with white midrib. Rosette (first form)<br />
leaves have long slender stalks, are widest near the tip and covered with<br />
soft hairs. Stem leaves lack hairs, are alternate, lance shaped, and clasp the<br />
stem.<br />
•Stems: 30 - 120cm tall, multi-branching.<br />
•Flower: Cluster on upper stem in a flat-topped inflorescence. Yellow petals<br />
3mm long and wide.<br />
•Seed/Fruit: Purplish brown, tear drop shaped seed pods hang from small<br />
stalks.<br />
•Control: Chemical.<br />
Montana State University <strong>Invasive</strong> <strong>Plant</strong> <strong>Identification</strong> <strong>Guide</strong> Montana State University <strong>Invasive</strong> <strong>Plant</strong> <strong>Identification</strong> <strong>Guide</strong><br />
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Montana State University <strong>Invasive</strong> <strong>Plant</strong> <strong>Identification</strong> <strong>Guide</strong>
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