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| Frequently Asked Questions | Product Information | Fungus Facts | Where To Buy |
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| DISEASE | OVERVIEW | SYMPTOMS |
Gray Mold (Botrytis Blight) |
Botrytis blight (Gray Mold) is a fungus, which infects a wide array of herbaceous annual and perennial plants. Botrytis infections are favored by cool, rainy spring and summer weather with little or no wind. Gray mold can be particularly damaging when rainy, drizzly weather continues over several days. | Grey Mold can cause different symptoms on different plants. Common symptoms include: blighting of flowers, tan to brown leaf spots, shoot blights and stem rot; fuzzy, grey mold on diseased plant parts. |
Powdery Mildew |
Powdery Mildew is a common fungus that attacks ornamentals and vegetables. Powdery mildew is favored by cool nights followed by warm days, and is most common in shaded areas and in sites where plants are crowded and air circulation is poor. | Powdery mildew first appears as white, powdery spots that may form on both surfaces of leaves, on shoots, and sometimes on flowers and fruit. Leaves infected with powdery mildew may gradually turn completely yellow, curl, die, and fall off. |
Downy Mildew |
Downy mildew is a wet weather fungus that attacks leaves and fruits. Although its name sounds similar to powdery mildew, downy mildew is very different. Downy mildew favors cool, moist conditions. | Downy Mildew begins as irregular yellow patches on leaves, that later turn tan to brown. It will eventually spread to the leaf, stem flower or fruit. If conditions are favorable, a dirty white, fluffy growth will appear on the underside of the leaves. Seedlings will often wilt and collapse, mimicking nutritional deficiencies. |
Rust  |
Rust diseases are favored by moderate temperatures, and its spores can be killed by high temperatures. Water is needed for infection, and overhead watering should be avoided. | Signs of rust include bright yellow, orange, reddish or brownish raised bumps on the underside of the leaves. |
Leaf Spots |
Either fungi or bacteria can cause leaf spot diseases. Most leaf spot diseases do not cause harm, but rather make the plant unattractive. |
Symptoms may depend on the pathogen and plant. Common symptoms include bull’s eye spot, irregular tan spots, black or tan spots with a yellow halo, and tan to gray spots with a red halo. |
Anthracnose Diseases |
Anthracnose diseases are causes by several closely related fungi, which attack foliage and twigs in late spring and early summer. | Symptoms of Anthracnose diseases depend on the plant and weather. Common symptoms include dead areas and blotches on leaves. Cankerous areas are also possible. |
Leaf Galls |
Leaf Galls are a common and abnormal growth that occurs on the leaves of plants. They are caused by feeding of living organisms, including bacteria, fungi, mites and insects. | Symptoms of Leaf Galls include white, yellow, red or gray blisters on leaves. The leaves may become puckered or curled. |
| © photographs courtesy of www.forestryimages.org | ||
