Injured plants have a silvery luster at the feeding site. Leaves damaged by thrips become disfigured. Flower buds are a favorite feeding site of thrips. All flowering garden plants are attractive to thrips. They are a particularly troublesome pest of roses.
Thrips are serious pests of gladiolus.
A corm treatment is recommended to reduce thrips damage. Leaf Beetles Leaf feeding beetles are quite diverse in size and appearance. The grubs may be cream colored with no markings to colored with stripes and spots. All leaf feeding beetles have chewing mouthparts. When they feed, plant tissue is consumed leaving holes in the plant parts which have been fed upon.