University of Maryland Extension

Home and Garden Information Center

Base Name: 
hgic

Powdery Mildew on Houseplants

Back to Common Problems - Houseplants There are several fungal species that cause powdery mildew of house plants, but the symptoms are the same. The most obvious symptom is the white powdery coating on the surfaces of infected leaves and stems. The initial areas of mildew may start out as small...

Gray Mold or Botrytis on Houseplants

Back to Common Problems - Houseplants Gray mold or Botrytis blight often begins with relatively large grayish to tan areas on older leaves or spent flowers. The dusty gray spores of the fungus are easily seen and infected areas can rapidly enlarge and cause tissue collapse. This fungus primarily...

Fungal Leaf Spot Diseases on Houseplants

Back to Common Problems - Houseplants There are many species of fungi that can cause leaf spots on house plants (leaf spot on prayer plant). Symptoms often include many tan to reddish brown to black roughly circular spots or lesions that may run together to cause large irregular shaped lesions (...

Bacterial Leaf Spots of Houseplants

Back to Common Problems - Houseplants There are several species of bacteria that attack houseplants. Some of these bacterial infections become systemic throughout the plant while others will remain as localized lesions. Bacterial disease symptoms range from black to brown, often watery leaf spots...

Skunks

Back to Common Problems - Lawns Back to Wildlife The skunk is a larger member of the weasel family and can grow to be about 30 inches long (tail included) and weigh about 8 pounds. Their natural habitat is around clearings, pastures and along the edge of forests. They usually nest under a hollow...

Moles - Lawns

Back to Common Problems - Lawns The Eastern mole is often thought to be a rodent. However, it is not a rodent, but an insectivore related to shrews and bats. Moles consume 70 to 100 percent of their body weight in insects (mostly grubs and worms) each day. They must eat constantly to maintain the...

Sod Webworm - Lawns

Back to Common Problems - Lawns Sod webworms are a complex of over 20 species of Pyralid moths across the U.S. Two species that have occurred in outbreak situations are the bluegrass webworm and the larger sod webworm. The caterpillars are the damaging stage of these moths. Caterpillars range in...

Scoliid Wasps - Lawns

Back to Common Problems - Lawns These are actually good guys! Another group of ground nesting wasps are the digger or Scoliid wasps. Scoliid wasps are about 5/8 inch long, blue-black, with blackish purple wings. There are two yellow stripes, one on each side of the abdomen. Their bodies are fairly...

Mining Bees - Lawns

Back to Common Problems - Lawns (More insects from HGIC) Publication: (PDF) HG 104 Mining Bees and Ground Nesting Wasps Mining, or digger bees nest in burrows in the ground. Unlike honey bees, mining bees are solitary bees. Each mining bee female usually digs her own burrow to rear her young. Large...

Grubs - Lawns

Back to Common Problems - Lawns Grubs are the larvae of Japanese Beetles (grub, adult), May or June Beetles (adults), Masked Chafer Beetles (grub, adult) or Oriental beetles (adult). Grubs feed on the roots of plants, particularly grass and remain underground for one to three years until they...

Pages

Maintained by the IET Department of the College of Agriculture and Natural Resources. © 2017. Web Accessibility