GARDEN ENEMIES

STEM and SHOOT PROBLEMS (cont.)

Chief Sign or Symptom Probable Pest or Disease Described Under
Webbed nests at branch crotches. Tent Caterpillar (Fig. 22A)" Caterpillars
Branches webbed together at end. Fall Web worm (Fig. 61) Webworms
Brackets coming out of trunk. Heart Rot Fungi Rots
Bark with swollen blisters, pine. White Pine Blister Rust Rusts
Pine shoots tan, crooked. European Pine Shoot Moth (Fig. 40A) Moths
Galls at base Norway spruce twigs. Terminal gall on blue spruce. Eastern Spruce Gall Aphid (Fig. 4A, B) Cooley Spruce Gall Aphid (Fig. 4C) Aphids
Canker at base of trunk, maple, dog- wood, etc. Bleeding Canker, Crown Canker Cankers
Dark sooty areas near wounds. Rose Stem Canker Cankers
Small white spots, reddish margins on rose canes. Brown Canker (Fig. 21A) Cankers
Shoots, branches dying, pear, apple, etc. Fire Blight (Fig. 14) Blights
Peony shoots dying, gray mold. Botrytis Blight (Fig. 13A) Blights
White coating on stems, shoots. Mildew Powdery Mildews
Reddish or black pustules on stems, shoots. Rust Rusts
Orange tendrils entwining stems. Dodder (Fig. 28) Dodder

FOLIAGE PROBLEMS
Chief Sign or Symptom Probable Pest or Disease Described Under
Leaves eaten through or skeletonized Entirely ravaged. Grasshoppers Grasshoppers
Eaten by large worms with poste- rior horn. Tomato, Tobacco Horn worm (Fig. 23) Grasshoppers



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