Species

Date

GDD

5/17/2005

273

Magnolia 'Ann'

E

Cercis canadensis

redbud

C-D

Viburnum carlesii

Koreanspice viburnum

E

Prunus serrulata

Japanese flowering cherry

E

Syringa vulgaris

common lilac

C -D

V. juddii

Judd viburnum

E

V. burkwoodii

Burkwood viburnum

D-E

Malus floribunda

Japanese flowering crabapple

D-E

Malus sargentii

Sargent crabapple

D-E

V. lantana ‘Mohican’

Viburnum 'Mohican'

C-D

V. prunifolium

Blackhaw viburnum

A

V. maresii

Doublefile viburnum

B

camperdown elm

leafminers

Laying eggs

Spruce

spidermites

feeding

European larch

adelgids- Adelges laricis

2nd instar

Mugho pine

Euro. Pine sawfly

Early instars feeding

White pine

Pine bark adelgid

Eggs laid on twigs

Aesculus pavia

red buckeye

B

Aesculus flava

yellow buckeye

C

Aesculus hippocastanum

horsechestnut

C

Burningbush

Black bean aphid

Feeding on foliage

Boxwood

Boxwood psylllids

Nymphs feeding

Boxwood

Boxwood leafminer

Pupal stage

Cornus sericea

Redosier dogwood

A

Syringa ‘Tinkerbelle’

‘Tinkerbelle’ lilac

A

Key-
A- 5% or less flowers open “first bloom”
B- >5% to <95% “early bloom”
C- 95% or more flowers open –“full bloom”
D- flowers dropping- “late bloom”
E- done blooming