3 (1 = rare 5 = annual)

4 (1 = very little damage 5 = plants killed)

Peopy

Perennial

• Peony (Paeonia x hybrida)

Botrytis (Gray Mold) and anthracnose often cause similar damage. Botrytis and anthracnose can infect buds, flowers, leaves, and stems. Infected tissue turns dark brown and dies. The first symptoms are small spots that enlarge with time. The flower bud may be killed (bud blast). Entire leaves may die. Spots usually become elongated streaks that may grow down into the tuber. If that happens, the plant usually begins to die out over a number of years.

Paeona sp. (Peony) get botrytis and anthracnose. Culturing in a lab is usually necessary for proper identification.

Botrytis can infect plants when temperatures are between 32 and 84 degrees Spores are released on a rising as well as a lowering humidity. However free standing moisture is required for infection. The fungus can over winter on live and dead plant material.

Anthracnose needs free standing moisture to infect.

Fungicides and sanitation are helpful.

Grow in full sun and good air circulation

Home, Yard & Garden Pest Guide
The Home, Yard & Garden Pest Guide (C1391) provides is written for homeowners and other residents and provides nonchemical and current chemical recommendations for controlling pests associated with trees, shrubs, turf, flowers, groundcovers, vegetables, fruit, and houses. In addition, you'll find detailed information about integrated pest management, pesticide safety, and pesticide application and calibration techniques. This publication may be purchased at your local University of Illinois Extension Unit office, or by calling 800-345-6087, or by placing an order online (search for "C1391").
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Illinois Commercial Landscape and Turfgrass Pest Management Handbook
The Illinois Commercial Landscape and Turfgrass Pest Management Handbook (ICLT) is written for professional applicators and provides nonchemical and current chemical recommendations as well as application timing information for all major pests of turf, woody ornamentals and herbaceous ornamentals. This publication may be purchased at your local University of Illinois Extension Unit office, or by calling 800-345-6087, or by placing an order online (search for "ICLT").
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U of IL - Distance Diagnosis through Digital Imaging
A free plant, weed, insect and disease identification service available through your local University of Illinois Extension office. Center Educators or State Specialists review & respond to information and digital images submitted by local Extension office personnel. Some samples may require further examination or culture work (nominal fee involved) at the U of IL Plant Clinic.
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U of IL - Plant Clinic
Services include plant and insect identification, diagnosis of disease, insect, weed and chemical injury (chemical injury on field crops only), nematode assays, and help with nutrient related problems, as well as recommendations involving these diagnoses. Microscopic examinations, laboratory culturing, virus assays, and nematode assays are some of the techniques used in the clinic.
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