The citrus mealybug (Planococcus citri) is a major greenhouse and houseplant pest. In subtropical climates, this sucking insect is also a problem outdoors. Read Article
Damping-off is the infection of young seedlings by a variety of different fungi, most often species of Rhizoctonia, Pythium, and Fusarium.
Mexican bean beetle (Epilachna varivestis), a member of the ladybug family, attacks many kinds of beans—bush, pole, and lima—as well as cowpeas and soybeans. Read Article
The larvae feed on some 120 species of woody ornamentals-deciduous shrubs and trees as welt as conifers. Read Article
The gray garden slug (Deroceras reticulatum), introduced from Europe, is the most damaging slug species in the United States.
Black spot (Diplocarpon rosae) is the most serious and widespread disease of roses, thriving wherever there is adequate humidity and rainfall. Read Article
Adult iris borer moths fly at night and mate during August and September.
Squash vine borers (Melittia cucurbitae) are a serious vegetable garden pest east of the Rocky Mountains.
Field bindweed (Convolvulus arvensis), also known as wild morning glory, creeping Jenny, corn bind, and devil’s guts, is one of the world’s worst weeds and among the most difficult to eradicate.
This native insect found throughout North America feeds on at least 88 species of deciduous trees, from apple to willow. Read Article
Apple scab (Venturia inaequalis) is a problem wherever apples are grown; it’s more serious, however, in temperate areas that experience cool, wet weather in spring and early summer.