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Dahlia (Dahlia)-Aphid Bean aphid (Aphis fabae) Green peach aphid (Myzus persicae) Leafcurl plum aphid (Brachycaudus helichrysi) Pest description and damage The aphids tend to be small (.0625 to 0.125 inch in length), oval to pear-shaped, soft-bodied insec ...

Dahlia (Dahlia)-Cutworm Includes Large yellow underwing (Noctua pronuba) Variegated cutworm (Peridroma saucia) Pest description and damage Several species of cutworms attack dahlias. These are green, reddish, or black caterpillars up to 0.75 to 1.0 inch i ...

Dahlia (Dahlia)-Earwig Primarily European earwig (Forficula auricularia) Pest description and damage This introduced, nocturnal insect can devastate seedlings, flowers, leaves, and fruit. Adults are brown in color and roughly 0.5 inch long. Earwigs are re ...

Dahlia (Dahlia)-Western spotted cucumber beetle Diabrotica undecimpunctata Pest description and damage The adult western spotted cucumber beetle is yellowish green, 0.25 inch in length, and has eleven black spots on its wing covers. The adult beetles eat ...

Daphne (Daphne)-Aphid Includes Foxglove aphid (Aulacorthum solani) Several other species Pest description and damage Aphids (roughly 0.10 inch in length) appear in large numbers on Daphne laureola in spring and seem to disappear by June. Aphids feed in co ...

Daphne (Daphne)-Lecanium scale Includes Parthenolecanium corni Pest description and damage Scale insects are small (less than 0.125 inch in length) soft insects that live beneath waxy scales. These insects are often identified by the shape and size of the ...

Dogwood (Cornus)-Brown soft scale Coccus hesperidum Pest description and damage Scale insects are small (less than 0.125 inch in length) soft insects that live beneath waxy scales. These insects are often identified by the shape and size of their scales, ...

Dogwood (Cornus)-Flea beetle Dogwood flea beetle (Altica corni) Pest description and damage Adults of this pest of red osier dogwood are dark, shiny blue, and about 0.25 inch in length. Larvae are black and about 0.25 inch long at maturity. Adults chew ho ...

Dogwood (Cornus)-Lecanium scale Includes Parthenolecanium corni Pest description and damage Scale insects are small (less than 0.125 inch in length) soft insects that live beneath waxy scales. These insects are often identified by the shape and size of th ...

Dogwood (Cornus)-Oystershell scale Lepidosaphes ulmi Pest description and damage Scale insects are small (less than 0.125 inch in length) soft insects that live beneath waxy scales. These insects are often identified by the shape and size of their scales, ...