Anthracnose (Cucurbits)

Anthracnose (Cucurbits) Description: Attacks most cucurbits in warm, wet weather. Infected fruit develops circular brown to black sunken areas, up to 1″ across. Overwintering occurs in plant refuse and on seed. Cucumber beetles and splashing water spread spores. Solution: For best control, begin spraying with Soap-Shield® Fungicidal Soap before the disease normally appears (when warm, humid weather is the normal […]

Downy Mildew (Onions)

Downy Mildew (Onions) Description: Spots on the leaves become covered with a lavender or purplish mold. Requires cool temperatures and rain or high humidity. Under these conditions, onion leaves bend, resulting in lower yields and bulb quality. Solution: Grow onions in well-drained soil to keep roots from getting soggy. To prevent the spread of disease, wash tools and shoes after […]

Gypsy Moth – How to Control

Gypsy Moth Description: Larvae are gray caterpillars 2″ long, with long brown hair. They eat tree foliage of all kinds. Eggs hatch in late April or early May and larvae search for food immediately. At early stages, the damage to leaves is slight and is often overlooked, but the early stages are when these pests are most vulnerable to control […]

Downy Mildew on Roses

Downy Mildew on Roses Description: Downy mildew affects roses throughout the U.S. Infection begins on young plant growth. Leaves develop dark purplish to dark brown spots. Symptoms may resemble burns caused by pesticide toxicity. Humid, cool conditions favor downy mildew infection. Solution: If downy mildew has been a problem in the past, begin spraying Soap-Shield® Fungicidal Soap when new spring […]

Halo Blight (Beans)

Halo Blight (Beans) Description: Symptoms of halo blight start as small watersoaked spots on leaves, which gradually turn dark brown. The spots remain small and become surrounded by a wide yellow-green halo. The spread and development of halo blight is favored by wet weather and plant injury from rain, hail, people or equipment. Halo blight develops best when temperatures are […]

Anthracnose (Beans)

Anthracnose (Beans) Description: Fungi live on infected bean seed and in debris that has been left on top of garden soil. Moderate, frequent rainfalls, especially if accompanied by winds, provide perfect conditions for spread of anthracnose. Solution: Plant beans in a different location each year, and purchase disease-free seed each year. Anthracnose is spread quickly and easily when plants are […]

Early Blight (Potatoes & Tomatoes)

Early Blight (Potatoes & Tomatoes) Description: Problem for potatoes and tomatoes. Irregular brown spots show on lower leaves first. Lower leaves fall off, tomatoes are exposed to sun, causing sunscald. On old plants, it sometimes causes black, sunken spots near the stem end of tomatoes. Solution: Begin applying Soap-Shield® Fungicidal Soap or Copper Dust soon after setting out plants, then […]

European Corn Borer

European Corn Borer Description: White to flesh-colored larvae with brown spots and dark head, up to 1″ long, overwinter in corn stubble. They like all types of corn, especially sweet corn. First signs are “shotgun” holes in the whorl (the funnel-like new growth). Shortly after, borers move into the stalk or ears and frequently leave “sawdust” around borer holes. Broken […]

Fire Blight (Apples & Pears)

Fire Blight (Apples & Pears) Description: : Can cause severe damage to apple and pear trees. Fire blight usually attacks blossoms, but infection and dieback of new shoots is common (see photo). The downward curled twig tip is characteristic of fire blight. Solution: Cut off infected twigs and branches 12″ below the dead area. Disinfect pruning tool between cuts by […]

Flea Beetle

Flea Beetle Description: Black, often with a curved yellow or white stripe on either side of its back. Flea beetles are seldom actually seen; they hop away before you get close enough to see them. They eat nearly all garden crops, and the adults are very troublesome when seedlings are set out. Leaves become riddled with little holes, chewed through […]