4 (1 = rare 5 = annual)

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

Rosa spp. (rose) and other plants.

Shrub

• Carolina Rose (Rosa carolina)
• Father Hugo Rose (Rosa xanthina forma hugonis (Rosa hugonis))
• Harrison's Yellow Rose (Rosa x harisonii)
• Redleaf Rose (Rosa glauca)
• Rugosa Rose (Rosa rugosa)

Cankers can cause dead areas on the stem that can enlarge and eventually kill the stem or even the entire plant. However, depending on host and pathogen the symptoms can vary.

The pathogen overwinters on dead plant material. Spores are wind blown. During wet weather, spores infect stressed plants.

Keep plants healthy - water, and fertilize to improve vigor. Practice good sanitation - prune out/remove infected tissue when plant is dry but before spring growth starts. Prune cankered canes immediately above the second healthy node below the diseased areas, or to the next branch down, or to the main stem if needed. There are no effective fungicides for most canker fungi.

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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