3 (1 = rare 5 = annual)

3 (1 = very little damage 5 = plants killed)

Convallaria sp. (Lily-of-the-Valley), Hemerocallis sp. (Daylily), Heuchera sp. (Coral Bells), Hosta sp., Paeona sp. (Peony) as well as many other flowers.

Annual

• Hollyhock (Alcea rosea)
• Pansy, Viola (Viola x writtrockiana)

Perennial

• Coral Bells (Heuchera sanguinea)
• Heartleaf Bergania (Bergania cordifoia)
• Peony (Paeonia x hybrida)
• Plantain Lily, Hosta (Hosta sp. )

Anthracnose causes small brown spots on coral bells. Anthracnose causes lesions that are often oval in shape and dark brown in color with purplish margins on Lily-of-the-Valley. These spots may fall out, exposing the veins. This disease is not usually fatal but does weaken the plant. The following year, the number of flowers is often reduced. Anthracnose cause brown spots on the leaves that can merge to form irrugular dead areas and occurs more often on hostas in wet or over watered locations. The brown lesions may spread to encompass the entire leaf. Peony get botrytis and anthracnose. The disease causes buds, flowers, leaves, and stems to die. The disease often cause similar damage to Botrytis on peonies. Culturing is usually necessary for proper identification. Symtoms will vary from plant to plant or even on the same plant depending on pathogen, host, time of infection, weather and so on.

The disease over-winters on dead plant material and spores can blow for many miles. Wet conditions promote infection and spread of the disease.

Grow Plants in full sun and provide good air circulation. Fungicides and sanitation may be helpful.

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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