PLUMELESS THISTLE
(Carduus acanthoides L.)

GROWTH HABIT: Biennial, sometimes annual, erect, up to 8 ft. Tall. Rosette formed first year, flowering stem elongates second year.

LEAVES: Dark green with a light midrib, hair only on the underside, leaf margin with sharp spines.

STEMS: To 4 ft. Tall, erect, winged to flowering heads.

FLOWERS: Solitary, terminal or clusters of 2 to 5. Narrow seedhead bracts spine tipped. Reddish-purple blooms ½ to 1 inch diameter.

ROOTS: Stout, fleshy taproot.

SEEDS: Striped lengthwise, slightly curved, with a protrusion at one end.

OTHER: Reproduce by seed only.

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