Hybrid Tea Roses
Symptom Cause  
Leaves curl/discolor; honeydew on undersides of leaves, sooty mold forms
Aphids
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Canes girdled; die back; leaves wilt
Borers
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Holes in leaves
Caterpillars
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Growth on roots that are, spongy, rough, pinhead- to golf ball-sized, tumor-like swellings that become brown, woody knots with age
Crown Gall
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Majority of the plant diseases, about 8,000, are caused by fungi, symptoms may look White; black or rusty spots on leaves
Fungal Diseases
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Holes in leaves and flowers
Japanese Beetles
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Foliage yellowed or white mottling, glaze of honeydew; plant weakens
Leafhoppers
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Leaves stippled, yellow, dirty; webbing on interior stems of plant
Mite
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Plant stunted, leaves yellowed, root lesions
Root Nematodes
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Buds deformed, black, crisp; stem tips dead;
Rose Midge
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Leaves/canes encrusted with small bumps
Scale
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Black powdery sooty mold fungus forms on honeydew;
Sooty Mold
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Canes swell and discolored,keep canes from crossing each other. Even if they appear not to be touching, wind and growth can change that condition.
Stem Canker
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Leaves discolored; black fecal spots on underside of leaf.
Thrips
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