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Indicator Plants | Ornamental Pests | Vegetable Pests | Fruit Pests | Others
Scilla siberica full bloom
Pussy willow full bloom
Forsythia full bloom
Pasque flower full bloom
Crocus full bloom
Daffodils full bloom
Dandelion first flower (50 DD 50)
Magnolia x soulangiana, pink bud (50-100)
Dutchman’s breeches full bloom (80)
Magnolia x soulangiana, full bloom (100-200)
Amelanchier laevis full bloom (100-200)
Common lilac first flower (275)
Koreanspice viburnum full bloom (200)
Redbud full bloom (200-300)
Dandelion full bloom (200-300)
Wild plum, full bloom (200-300)
Common lilac full bloom (200-300)
Flowering crabapple full bloom (200-300)
Dandelion gone to seed (275-500)
Bleeding heart full bloom
Blacklocust full bloom (275-500)
Spiraea X Vanhouttei, full bloom (275-700)
Horsechestnut full bloom (200-350)
Strawberry full bloom
Creeping Charlie full bloom
Red osier dogwood full bloom
Pagoda dogwood full bloom (300-500)
Mockorange, full bloom (500-800)
Arrowwood viburnum, full bloom (700-800)
Catalpa full bloom (700-1000)
Hydrangea arborescens full bloom (900-1200)
Wood phlox full bloom P. paniculata
Ox-eye daisy
Peony full bloom
Elderberry full bloom (900-1200)
Chicory full bloom (900-1200)
Strawberry fruit coloring
Linden full bloom
Yellow sweet clover full bloom
Queen Anne’s lace, full bloom (900-1700)
Wild bergamot, full bloom (1500)
Hydrangea arborescens "Grandiflora" (1600) Blossoms turn from white to green
Crabapple fruit ripe
Mountain ash fruit ripe (1800-2100)
Arrowwood viburnum fruit ripe (2700-2900)
Witchhazel full bloom (2800-3000)
Goldenrod, full bloom (2900-3100)
Eastern tent caterpillar larva, 1st instar (100)
European pine sawfly larva, 1st instar(100-200)
Ash plant bug nymphs (100-200)
Honeylocust plant bugs (100-200)
Imported willow leaf beetle (200-350)
Pine needles scale crawlers, 1st generation (200-350)
Gypsy moth larva (200-350)
Spruce galls forming (250)
Ash borer larvae, 1st instar (275-500)
Oystershell scale crawlers (275-500)
Taxus mealybug (275-500)
Birch leafminer 1st generation larva (275-500)
Hawthorn leafminer larva active (275-500)
Elm sawfly larva (365)
Elm leaf beetle larvae (400-500)
Black vine weevil adult feeding (400-500)
Bronze birch borer larvae (400-500)
Mountain ash sawfly (500)
Euonymus scale crawlers (500-600)
Viburnum crown borer larvae (500-600)
Eastern tent caterpillar adults (725)
Cottony maple scale crawlers (850)
Fall webworm (850)
Wooly apple aphid (850)
European pine shoot moths (900)
Japanese beetle adults (900-1200)
Pine needle scale crawlers, 2nd generation (1600-1700)
Oystershell scale crawlers, 2nd generation (1600-1700)
Spider mites
Seed corn maggot, 1st gen (200 base 39)
Cabbage maggot (300, 1476, 2652 base 43)
Onion maggot (680, 1950, 3230 base 40)
Cutworms
Aster leafhopper
Cucumber beetles
Colorado potato beetle, 1st instar larva (185)
European corn borer adults, 1st gen. (375)
European corn borer 1st eggs (450)
Potato leafhopper
Green peach & potato aphids
Imported cabbageworm butterflies (150-240)
Imported cabbageworm larvae (300-400)
Cabbage looper
Squash vine borer eggs (1000)
Squash bug
Onion thrips
Corn earworm
Spider mites
Corn rootworm beetles (1300)
Codling moth, 1st gen adult emerge. (150)
Codling moth, 1st gen eggs laid (250)
Codling moth, 1st gen peak adult emerg. (500)
Codling moth, 1st gen peak egg laying (550)
Codling moth, 2nd gen first adult emerg. (1150)
Codling moth, 2nd gen peak adult emerg. (1600)
Codling moth, 2nd gen peak egg laying (1700)
Obliquebanded leafroller, 1st gen first adult (600 base 43)
Obliquebanded leafroller, 1st gen eggs laid (800 base 43)
Obliquebanded leafroller, 1st gen peak adult emerg. (1150 base 43)
Obliquebanded leafroller, 1st gen peak egg laying (1250 base 43)
Obliquebanded leafroller, 2nd gen first adult (2050 base 43)
Obliquebanded leafroller, 2nd gen first eggs laid (2300 base 43)
San Jose scale, 1st gen adult emerge. (125 base 51)
San Jose scale, 1st gen first eggs laid (225 base 51)
San Jose scale, 1st gen first crawlers hatch & peak egg laying (500 base 51)
San Jose scale, 2nd gen first adult emerg. (950 base 51)
San Jose scale, 2nd gen peak adult emerg. (1350 base 51)
San Jose scale, 2nd gen first crawlers hatching (1450 base 51)
San Jose scale, 2nd gen peak crawlers hatching (1600 base 51)
Apple maggot, first adult emerg. (900) 1
Apple maggot, first eggs laid (1100)
Apple maggot, peak adult emerg. (1600)
Apple maggot, peak egg laying (1750)
Apple maggot, end of adult emerg. (2800)
1 Assumes normal soil moisture
levels
BACK to the TOP
Earthworms on sidewalk
June beetle adults
Mosquito, first biting
Firefly, first flashing
Cricket, first chirping
