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Symptoms
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Catalog

Shade Treees P - Z

P

Poplar, Eastern

Symptoms	Probable Cause	Bonide Best Solution
Galls on leaf stems; end buds distorted	Aphids	Annual Tree & Shrub, Eight CRS, All Seasons, Total Outdoor, Systemic Insect C
Black powdery sooty mold fungus forms on honeydew; branches may die	Ants Herding Aphids	Eight CRS, TOTAL-Outdoor, Rotenone/Pyrethrin
Many holes in branches; limbs girdled sawdust at holes	Borers	Annual Tree & Shrub, Eight CRS, Total Outdoor
Leaves eaten; trees defoliated	Caterpillars	Systemic Insect C, Eight CRSD, Thuricide BT
Twigs break off	Poplar Curculio	Total-Outdoor, Rotenone Pyrethrin
Leaf tissue eaten between veins, circular holes; foliage turn brown, dry; twigs die	Imported Willow Leaf Beetle	Annual Tree & Shrub, Rote/Pyr, Total Outdoor, Systemic Insect C
Leaves; branches encrusted with small bumps	Scale Insect	Annual Tree & Shrub, Bon-Neem CR, All Seasons CRS, Total Outdoor
Leaves blistered and curled up	Leaf Blister (fungus)	Fungonil
Brown spotted leaves; fall prematurely	Leaf Spot (fungus)	Infuse, Copper, Fungonil
White mildew coating both sides leaves	Powdery Mildew	Infuse C, Bon-Neem, Fung-onil
Young portions of foliage disappear, or young tips disappear, bark peeled off	Deer	Repels-All CRG, Deer/Rabbit R, Hot Pepper Wax

Poplar, Lombardy

Symptoms	Probable Cause	Bonide Best Solution
Galls on leaf stems; end buds distorted	Aphids	Annual Tree & Shrub, Eight CRS, All Seasons, Total Outdoor, Systemic Insect C
Black powdery sooty mold fungus forms on honeydew; branches may die	Ants Herding Aphids	Eight CRS, TOTAL-Outdoor, Rotenone/Pyrethrin
Many holes in branches; limbs girdled sawdust at holes	Borers	Annual Tree & Shrub, Eight CRS, Total Outdoor
Holes in leaves	Caterpillars	Systemic Insect C, Eight CRSD, Thuricide BT
Twigs break off	Poplar Curculio	Total-Outdoor, Rotenone Pyrethrin
Leaf tissue eaten between veins, circular holes; foliage turn brown, dry; twigs die	Imported Willow Leaf Beetle	Annual Tree & Shrub, All Seasons, Total Outdoor, Systemic Insect C
Leaves; branches encrusted with bumps	Scale Insects	Annual Tree & Shrub, Bon-Neem CR, All Seasons CRS, Total Outdoor
Swollen; sunken lesions on stems; trunk	Canker (bacteria)	Copper C, Mancozeb
Leaves blistered and curled up	Leaf Blister (fungus)	Fungonil C,
Brown spots on leaves; leaves fall prematurely	Leaf Spot (fungus)	Infuse, Copper, Fungonil
Leaves covered with white powder	Powdery Mildew (fungus)	Infuse C, Bon-Neem, Fung-onil
Young portions of foliage disappear, or young tips disappear, bark peeled off	Deer	Repels-All CRG, Deer/Rabbit R, Hot Pepper Wax

Poplar, Quaking Aspen

Symptoms	Probable Cause	Bonide Best Solution
Multitudes of tree sprouts in yard	Aspen Roots	Remove nearby plants/trees
Branches splinter; break off	Old Age	Replace tree
Galls on leaf stems; end buds distorted	Aphid	Eight CRS, Cygon
Many holes in branches; branches girdled sawdust	Borers	TOTAL-Out, Borer-Miner, Eight CRS
Holes in leaves	Caterpillars	BT Liquid, Eight C
Twigs break off	Poplar Curculio	Rote. 5%, Total-OUT
Leaf tissue eaten between veins, circular holes; foliage turn brown, dry; twigs die	Imported Willow Leaf Beetle	Eight C, Rote./Pyr.
Leaves; branches encrusted with small bumps	Scale Insect	Eight CRS, Bon-Neem, All Seas. CRS
Swollen; sunken lesions on stems; trunk	Canker	Bonomyl, Remedy
Leaves blistered and curled up	Leaf Blister (fungus)	Bonomyl, Fungonil C
Brown spots on leaves; leaves fall prematurely	Leaf Spot (fungus)	Fungonil C, Remedy
Leaves covered with white powder	Powdery Mildew	Remedy, Lime Sulfur, Bonomyl
Young portions of foliage disappear, or young tips disappear, bark peeled off	Deer	Deer/Rabbit CR, Hot Pepper

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R

Red Bud, Eastern

Symptoms	Probable Cause	Bonide Best Solution
Trees defoliated, brown egg cases appear on trunk	Larvae Of Gypsy Moth	Systemic Insect, Eight CRSD, BonNeem
Tissue killed, dark sunken spots in wood; leaves affected, canker on twigs.	Canker (bacteria)	Copper C, Mancozeb
Leaves turn yellow at margins, then brown, dry; new leaves stunted; tree dies slowly, branch by branch.	Verticillium Wilt (fungus)
Young portions of foliage disappear, or young tips disappear, bark peeled off	Deer	Repels-All CRG, Deer/Rabbit R, Hot Pepper Wax

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S

Sassafras

Symptoms	Probable Cause	Bonide Best Solution
Trees defoliated, brown egg cases appear on trunk	Larvae Of Gypsy Moth	Systemic Insect, Eight CRSD, BonNeem
Holes in leaves, spring; buds eaten, brown blotches at leaf tips	Sassafras Weevils	Annual Tree & Shrub, Eight CRS, All Seasons CRS, Total Outdoor
Young portions of foliage disappear, or young tips disappear, bark peeled off	Deer	Repels-All CRG, Deer/Rabbit R, Hot Pepper Wax

Sourwood

Symptoms	Probable Cause	Bonide Best Solution
Leaf dieback at branch tips	Drought Stress	Increase watering
Leaves eaten, silken nests spun by caterpillar	Fall Webworm	TOTAL-Outdoor, Systemic Insect C, Rotenone/Pyrethrin
Leaves at branch tips blighted	Twig Blight (fungus)	Copper, Mancozeb,
Purple blotches on leaves	Leaf Blights (bacteria)	Copper,Fire Blight Spray
Young portions of foliage disappear, or young tips disappear, bark peeled off	Deer	Repels-All CRG, Deer/Rabbit R, Hot Pepper Wax

Sweet Gum

Symptoms	Possible Cause	Bonide Best Solution
Young seedling dies	Seedling From Wrong Part Of Country
Leaves yellow; veins are green	Chlorosis	Chelated Iron
Ends of branches turn black	Frost Damage	frost coverage
Holes in leaves	Caterpillars	Systemic Insect C, Eight CRSD, Thuricide BT
Dark; damp stain on bark	Bleeding Necrosis (fungus)
Young portions of foliage disappear, or young tips disappear, bark peeled off	Deer	Repels-All CRG, Deer/Rabbit R, Hot Pepper Wax

Sycamore, American

Symptoms	Probable Cause	Bonide Best Solution
Irregular tan or brown spots on leaves at veins; expand until leaves die; sometimes sunken spots on leaves	Anthracnose (fungus)	Infuse,Fungonil C, Copper
Leaves turn pale; mottled; drop early	Lacebug	Annual Tree & Shrub, Eight CRS, Bon-Neem CR, Systemic Insect C
Many holes in branches; limbs girdled sawdust at holes	Borers	Annual Tree & Shrub, Eight CRS, Total Outdoor
Bumps on leaves; branches; stunted growth	Scale Insects	Annual Tree & Shrub, Bon-Neem CR, All Seasons CRS, Total Outdoor
Fewer; smaller leaves; blue/black stains on bark	Canker Stain (fungus)	Fire Blight Spray, Captan
On young trees foliage looks burned	Dog Urine	Dog/Cat, Rabbit/Dog
Young portions of foliage disappear, or young tips disappear, bark peeled off	Deer	Repels-All CRG, Deer/Rabbit R, Hot Pepper Wax

Sycamore, Plane Tree

Symptoms	Probable Cause	Bonide Best Solution
Leaves turn pale; mottled; drop early	Lace Bug	Annual Tree & Shrub, Eight CRS, Bon-Neem CR, Sys. Insect C
Many holes in branches; limbs girdled sawdust at holes	Borers	Annual Tree & Shrub, Eight CRS, Total Outdoor
Bumps on leaves; branches; stunted growth	Scale Insects	Annual Tree & Shrub, Bon-Neem CR, All Seasons CRS, Total Outdoor
Irregular tan or brown spots on leaves at veins; expand until leaves die; sometimes sunken spots on leaves	Anthracnose (fungus)	Infuse,Fungonil C, Copper
Fewer; smaller leaves; blue/black stains on bark	Canker Stain (fungus)	Captan
Young portions of foliage disappear, or young tips disappear, bark peeled off	Deer	Repels-All CRG, Deer/Rabbit R, Hot Pepper Wax

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W

Walnut, Black

Symptom	Probable Cause	Bonide Best Solution
Leaves yellow and curl	Zinc Deficiency	Zinc Sulfate
Leaves curled and distorted	Aphids	Annual Tree & Shrub, Eight CRS, All Seasons, Total Outdoor, Systemic Insect C
Black powdery sooty mold fungus forms on honeydew; branches may die	Ants Herding Aphids	Eight CRS, TOTAL-Outdoor, Rotenone/Pyrethrin
Many holes in branches; limbs girdled sawdust at holes	Borers	Annual Tree & Shrub, Eight CRS, Total Outdoor
Leaves eaten; trees defoliated	Caterpillars	Systemic Insect C, Eight CRSD, Thuricide BT
Nutshells stained; frass around holes	Larvae Of Codling Moths	Systemic Insect, Eight CRSD, BonNeem
Leaves eaten, silken nests spun by caterpillar	Fall Webworms	TOTAL-Outdoor, Systemic Insect C, Rotenone/Pyrethrin
Foliage turns pale or mottled	Lacebugs	Annual Tree & Shrub, Eight CRS, Bon-Neem CR, Sys. Insect C
Sooty mold, suck juices from leaves; may kill plant	Mealybugs	Annual Tree & Shrub, Eight CRS, All Seasons CRS, Rotenone/Pyrethrin
Leaves stippled/yellow/bronze/dry out/Drop. Webbing visible; leaf galls	Mites	Mite-X, Total-Outdoor, Sulfur, Systemic Insect C
Leaves; branches encrusted with bumps; growth stunted	Scale Insects	Annual Tree & Shrub, Bon-Neem CR, All Seasons CRS, Total Out
Leaves chewed	Larvae Of Tussock Moths	Systemic Insect, Eight CRSD, BonNeem
Sunken sores on trunks; branches	Canker (bacteria)	Copper
Irregular dark spots on leaves	Brown Leaf Spot (fungus)	Infuse, Copper, Fungonil
Corky galls at base of tree and roots	Crown Gall (bacteria)	Fire Blight Spray,
Branches, tops, young trees eaten	Deer	Repels-All CRG, Deer/Rabbit R, Hot Pepper Wax
Young plant wilts, small roots gnawed	Pocket Gophers	Hot Pepper Wax, Gopher Gassers, Moletox II
Nuts disappear from tree	Squirrels	Hot Pepper Wax, Gopher Gassers, Moletox II

Walnut, English

Walnut English

Symptoms	Probable Cause	Bonide Best Solution
Leaves wrinkled; stunted; leaves fall off	Aphids	Annual Tree & Shrub, Eight CRS, All Seasons, Total Outdoor, Systemic Insect C
Black powdery sooty mold fungus forms on honeydew; branches may	Ants Herding Aphids	Eight CRS, TOTAL-Outdoor, Rotenone/Pyrethrin
Nutshells stained; frass around holes	Larvae Of Codling Moth	Systemic Insect, Eight CRSD, BonNeem
Branches encrusted with small bumps	Oystershell Scales	Annual Tree & Shrub, Bon-Neem CR, Systemic Insect C, Total Outdoor
Leaves eaten; trees defoliated	Redhumped Caterpillars	Systemic Insect C, Eight CRSD, Thuricide BT
Branches encrusted with small bumps	Scale Insects	Annual Tree & Shrub, Bon-Neem CR, All Seasons CRS, Total Outdoor
Leaves stippled, yellowing or bronze; dry out and drop may be webbing visible; sometimes galls form on leaves	Spider Mites	Mite-X, Total-Outdoor, Sulfur, Systemic Insect C
Leaves eaten; trees defoliated	Walnut Caterpillars	Systemic Insect C, Eight CRSD, Thuricide BT
Growth weak, sparse; leaves drooping, yellow, small holes, cracks at graft. Black, corky cells at graft	Black Line	Prune infected areas
Bark darkened at soil; sap oozes; sapwood discolored; foliage sparse, yellow;	Crown Rot	Captan
Leaves covered with white powder	Powdery Mildew	Infuse C, Bon-Neem, Fung-onil
Irregular tan or brown spots on leaves at veins; expand until leaves die; sometimes sunken spots on leaves	Walnut Anthracnose (fungus)	Infuse, Fungonil C, Copper
Buds turn black; brown spots on leaves, dead lesions on shoots	Walnut Blight (bacteria)	Copper, Mancozeb
Young portions of foliage disappear, or young tips disappear, bark peeled off	Deer	Repels-All CRG, Deer/Rabbit R, Hot Pepper Wax

Willow, Corkscrew

Symptoms	Probable Cause	Bonide Best Solution
Black powdery sooty mold fungus forms on honeydew; branches may	Ants Herding Aphids	Eight CRS, TOTAL-Outdoor, Rotenone/Pyrethrin
Leaves wrinkled; stunted; leaves fall off	Aphids	Annual Tree & Shrub, Eight CRS, All Seasons, Total Outdoor, Systemic Insect C
Holes in branches; limbs girdled, dusty	Willow Borers	Annual Tree & Shrub, Eight CRS, Total Outdoor
Leaves eaten; trees defoliated	Caterpillars	Systemic Insect C, Eight CRSD, Thuricide BT
Twigs and branches may die; sooty mold with ants	Giant Bark Aphids	Annual Tree & Shrub, Eight CRS, All Seasons, Total Outdoor, Systemic Insect C
Trees defoliated, brown egg cases appear on trunk	Larvae Of Gypsy Moths	Systemic Insect, Eight CRSD, BonNeem
Leaf tissue eaten between veins, circular holes; foliage turn brown, dry; twigs die	Willow Leaf Beetles	Annual Tree & Shrub, All Seasons CRS, Total Outdoor, Systemic Insect C
Branches encrusted with small bumps	Scale Insects	Annual Tree & Shrub, Bon-Neem CR, All Seasons CRS, Total Outdoor
Stems and leaves covered with white, cottony, brownish, yellow, gray bumps.	Scurfy Scale	Annual Tree & Shrub, Bon-Neem CR, All Seasons CRS, Systemic Insect C
Many holes in twigs and branches; girdled sawdust at holes; sap oozes	Mottled Willow Borers	Annual Tree & Shrub, Eight CRS, Total Outdoor
Leaf surface eaten; lacy appearance, tree defoliated, leaves webbed.	Willow Hornworms	Annual Tree & Shrub, All Seasons CRS Total Outdoor, Systemic Insect C
Tissue killed, dark sunken spots in wood; leaves affected, canker on twigs.	Canker And Dieback (fungus)	Captan
Leaves enlarged, thickened at gall; brown galls harden	Fungal Leaf Gall (fungus)	Fungonil,
Rots at soil line and down in roots; spreads to trunk	Phytophthora Rot (fungus)	Infuse, Fungonil, Captan
Leaves blackish, wither, drop; twigs sunken spots, die	Willow Scab (fungus)	Fungonil, Captan, Sulfur C
Young portions of foliage disappear, or young tips disappear, bark peeled off	Deer	Repels-All CRG, Deer/Rabbit R, Hot Pepper Wax

Willow, Weeping

Symptoms	Probable Cause	Bonide Best Solution
Bark attacked; leaves curled and distorted	Aphid	Annual Tree & Shrub, Eight CRS, All Seasons, Total Outdoor, Systemic Insect C
Holes in leaves and girdled twigs	Bagworm	Systemic Insect C, Eight CRSD, Thuricide BT (C)
Branches swollen and distorted; holes; sawdust and sap stains at base of trunk	Borer	Annual Tree & Shrub, Eight CRS, Total Outdoor
Holes in leaves	Caterpillars	Systemic Insect C, Eight CRSD, Thuricide BT
Leaves consumed; conspicuous tawny egg masses present	Larvae Of Gypsy Moth	Systemic Insect, Eight CRSD, BonNeem
Leaf tissue eaten between veins, circular holes; foliage turn brown, dry; twigs die	Imported Willow Leaf Beetle	Annual Tree & Shrub, All Seasons CRS, Total Outdoor, Systemic Insect C
Foliage turns pale or mottled	Lace Bug	Annual Tree & Shrub, Eight CRS, Bon-Neem CR, Systemic Insect C
Leaves become distorted and cupped	Psyllid	Annual Tree & Shrub, Eight CRS, All Seasons CRS, Total Outdoor
Leaves are skeletonized	Sawfly	Annual Tree & Shrub, Bon-Neem CR, Rote/Pyr, Total Outdoor
Leaves and branches encrusted with bumps	Scale Insect	Annual Tree & Shrub, Bon-Neem CR, All Seasons CRS, Total Outdoor
Leaves discolored	Thrips	Annual Tree & Shrub, All Seasons CRS, Total Outdoor, Systemic Insect C
Leaves spotted; twigs and stems develop lesions	Canker (bacteria)	Copper, Mancozeb
Young portions of foliage disappear, or young tips disappear, bark peeled off	Deer	Repels-All CRG, Deer/Rabbit R, Hot Pepper Wax

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