DYER'S WOAD (Isatis tinctoria L.) GROWTH HABIT: Biennial or perennial up to 3 ft. Tall. Spreads by seed. Rosette formed 1styear, flowering stem elongates 2nd year. LEAVES: Basal rosette leaves are long with soft fine hairs. Stems leaves alternate, have short basal lobes clasping the stem and without hair. STEMS: Woody, upper portion is branched. FLOWERS: Small, yellow, 4 petals 1/8 inch across. SEEDS: Plant has many, slightly pear-shaped, winged, black seed pods 1/2" long, that hang like ornaments. Each pod contains 1 seed. OTHER: Formerly cultivated in Europe as a source of blue dye.

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