University of Maryland Extension

Home and Garden Information Center

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hgic

Diseases - Shrubs

Back to Common Problems - Trees and Shrubs Boxwood Culture and Diseases, Including Boxwood Blight Azalea - Exobasidium gall Boxwood blight Boxwood - Volutella blight Boxwood- Macrophoma Leaf Spot Cankers-Trees and Shrubs Cedar Apple Rust Fungal Leaf Spots Holly - Bacterial leaf blight Juniper twig...

Insects - Shrubs

Back to Common Problems - Trees and Shrubs Aphids Arborvitae Leafminer Asiatic Garden Beetle Bagworm Bark Beetles Borers of Broadleaved Shrubs Boxelder Bug Photo: William M. Ciesla, Forest Health Mgmt. International, Bugwood.org Boxwood Leafminer Boxwood Psyllid Cottony Camellia Scale Euonymus...

Cultural & Environmental Problems - Trees and Shrubs

Back to Common Problems - Trees & Shrubs Diagnosing a plant problem when there are no apparent biotic (disease pathogen or pest) causes can present a real challenge. An abiotic plant problem is not caused by any disease organisms or insects. An accurate diagnosis, whether biotic or abiotic,...

American burnweed

American burnweed Erechtites hieracifolia (More lawn weeds) (Control Options) ( General Weed Gallery) Life cycle: erect summer annual Growth habit: height may range from 1 1/2 - 10 feet, alternate leaves with toothed margins, feathery white seedheads are a key identifying feature Reproduction:...

Fall Weeds

It's fall and here are the weeds you might see around the state. These are the weeds most commonly seen in the Maryland home garden and landscape. Some of these germinate in the fall, survive the winter, continue to grow and set seed in the spring. Featured seasonal weeds: Spring l Summer l Fall...

October 2013 HGIC Newsletter

Not yet a subscriber? Subscribe Now and receive the newsletter in your email! Explore the newsletter archives Jump To Articles Featured Video Ask an Expert Featured Plants This Month's Quick Tips October 2013 Newsletter From the Director… Thanks to Mike Raupp, Chris Sargent, and Lynn Jacobson we...

Selecting and Using a Soil Testing Laboratory (HG 110)

HG110 Selecting and Using a Soil Test Lab and HG110a A List of Regional Soil Test Labs Reducing the flow of nutrients into Maryland waterways is a principal mission of University of Maryland Extension (UME). The Home and Garden Information Center and Maryland Master Gardeners teach residents how to...

HG and GE Publications by Number

Publications by number: (for HGIC's list of publications by subject) (PDF) HG 1 - Bark Beetles That Attack Conifers in Maryland (PDF) HG 2 - Hemlock Woolly Adelgid (PDF) HG 3 - Locust Leafminer (PDF) HG 4 - Earwigs (PDF) HG 5 - Silverfish and Firebrats (PDF) HG 7 - Ants and Their Control (PDF) HG 8...

Parasitoids: Tachinid Fly (Diptera)

Tachinid fly Tachinid fly Photo: R uss Ottens, University of Georgia, Bugwood.org Tachinid fly eggs laid on hornworm caterpillar Photo: Charles Ray, Auburn University, Bugwood.org People may be surprised to learn there are many beneficial flies that prey on garden pests. In fact, parasitoid flies...

Parasitoid Wasps (Hymenoptera)

Parasitic wasp emerging from aphid mummy Hornworm parasitized by a braconid wasp Ichneumonid wasp Parasite exit holes in scale covers Scoliid wasp There are many species of parasitoid wasps, but most are so tiny that they are rarely noticed. What they lack in size they make up in sheer numbers and...

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