Pear Scab Description: Scab first appears on the bottom and later on the side of the fruit. Infected fruit often become misshapen. Scab spores develop during the winter, in infected leaves on the ground. Infection begins at the green-tip stage of flower bud development. Infection is highest when blossoms are open, but continues for about 6-9 weeks. Solution: Spray Soap-Shield® […]
Plum Curculio Description: Adult beetle, black or brownish black, is about 1/4″ long, very hard, and has a beak 1/4 as long as its body. They prefer apples and stone fruits (peach, plum, etc.). Adults overwinter in the trash beneath trees, in fence rows, or in wooded areas. In spring they begin appearing at late bloom. Larvae bore to the […]
Potato Leafhopper Description: These small, light green, triangle-shaped insects feed on potatoes, eggplant, vine crops, beans, rhubarb and peanuts. Hopper-burn by potato leafhopper causes 80% of insect damage on potatoes in the eastern U.S. Yield reduction can be drastic; eventually the plant dies. Solution: Super-Light Insect Barriers provide a good shield. Thorough spraying underneath leaves with Rotenone/Copper Combo or PyolaTM […]
Powdery Mildew (Roses) Description: Powdery mildew and black spot are the “one-two punch” on roses. Powdery mildew is a problem in all parts of the U.S. Powdery mildew usually first appears on new growth, in periods of warm, dry days followed by cool, damp nights. The new leaves may become curled or twisted, and the shoots will look badly deformed. […]
Pythium Root Rot (Damping-Off) (Beans) Description: Yellowing, stunted growth, sudden seedling wilting (damping-off) and death. Can also kill seedlings before emergence. Pythium spores occur in the soil almost everywhere beans are grown. Solution: Sprinkle SoilGardTM Microbial Fungicide over seed at time of sowing, before covering seed with soil.
Pythium Root Rot (Damping-Off, Seed Rot) (Peas) Description: A watery rot is characteristic. Plants are often stunted and light green because of the lack of root development. Solution: Plant as early in the season as possible. Peas are a cool-season crop, while pythium disease is most severe at temperatures from 64°-75°F, which is higher than preferred for pea germination. Sprinkle […]
Iris Borer Description: Eggs overwinter in stems of iris and other debris. After eggs hatch they must crawl to the base of the iris to bore into stems. During this migration they are susceptible to Grub-Away Nematodes. Infested leaves are yellow from the tip back, have notches on the edge; plants lose vigor; many fail to bloom. Solution: Grub-Away Nematodes […]
Pythium Rot (Damping-Off, Stem Rot) on Tomatoes Description: Damping-off occurs at or before germination, causing rapid decline and death of seeds or young seedlings. On older plants, disease causes severe wilting and black stem, beginning at ground level, resulting in severe stunting or death of plants. Solution: Maintain soil pH at 6.5 to 7.0. Test soil pH; if it is […]
Japanese Beetle Description: Metallic green/copper adult grows to 1/2″ long. Larvae or grubs are grayish-white with brown head; fat body is 3/4″ long. Adults especially like beans and corn but will eat almost any plant, often skeletonizing the leaves. Larvae chew on roots of lawn grass, bean, beet, sweet corn, onion and tomato; except during cultivation, they are seldom noticed, […]
Pythium Wilt (Lettuce) Description: Dark yellow-brown roots, stunting, yellow of outer leaves. Root system decline. Solution: Provide good drainage; raised beds are ideal. Sprinkle SoilGard over seed at time of sowing, before covering seed with soil. When starting seed indoors, mix SoilGard with potting soil before seed is sown.