Gladiolus: Thrips categories: Bulbs Gladiolus Gladiolus Insects Ornamentals revision date: 2023-02-20 12:00 Gladiolus thrips damagePhoto by: R.S. Byther Biology Gladiolus thrips are tiny insects with feather-like wings, an unusual design in the insect world. They have rasping mouthparts that cause feeding damage characterized as elongated stippling on leaves and flowers, eventually making plant materials appear […]
Daylily: Daylily gall midge categories: Bulbs Daylily Daylily Insects Ornamentals revision date: 2023-02-07 12:00 Daylily gall midge larvae & damage to budPhoto by: D. Pehling Biology The daylily or Hemerocallis gall midge (Contarinia quinquenotata) is the larva of a small, nondescript, grayish-brown fly. The adult fly overwinters in the soil and emerges in spring to […]
Daylily: Thrips categories: Bulbs Daylily Daylily Insects Ornamentals revision date: 2023-02-07 12:00 thrips damage on gladiolusPhoto by: R.S. Byther Biology Several species of thrips may be found on daylilies. Thrips are tiny (usually less than 1⁄8 inch long), fast-moving insects often found on leaves and between flower petals. Adults are typically yellow to brown; nymphs are […]
Dahlia: Virus categories: Bulbs Dahlia Dahlia Diseases Ornamentals revision date: 2022-09-15 01:22 Dahlia mosaic virus symptomsPhoto by: R.S. Byther Biology Tomato spotted wilt virus (thrips vector) induces a yellow-green mosaic, irregular concentric rings, or even wavy-lines in older leaves. Dahlia mosaic virus (aphid vector) produces chlorosis along veins and may shorten internodes, facilitating a stunted […]
Dahlia: Earwigs categories: Bulbs Dahlia Dahlia Insects Ornamentals revision date: 2022-09-02 07:38 Earwig as nuisance pest on flowersPhoto by: M. Bush Biology Earwigs are reddish-brown insects about 3⁄4″ or less in length. Both males and females have pincers at the rear end. Earwigs are largely beneficial, feeding on many pests such as aphids (including apple […]
Dahlia: Western spotted cucumber beetle categories: Bulbs Dahlia Dahlia Insects Ornamentals revision date: 2022-09-01 07:53 Western spotted cucumber beetlePhoto by: K. Grey Biology The western spotted cucumber beetle is a pest of many ornamentals and vegetables. About 1⁄4″ long, the adult beetles have yellow wing covers with black spots. The rest of the body is […]