Mature larvae yellowish to apply after bud formation. Cutworms, including Bacillus thuringiensis variegated cutworm Peridroma saucia Larva is brownish with distinct white diamond-shaped markings on back. Painted-lady or Seldom a pest. Insecticides thistle butterfly registered for artichoke plume Vanessa cardui moth control this insect. Spiny caterpillars, dull brown to black with pale yellow stripe on each side.
Caterpillars feed mostly on thistle.
They Arion ater seek out and eat the small slugs, thus keeping the slug population Slimy land mollusks that feed low. Especially injurious during cool, cloudy periods. Look for slime trails. The Pacific Northwest Disease Control Handbook has no control entries for this crop. Ridomil is registered but has not been evaluated in the Pacific Northwest.