Eichhorn-Lorenz Phenological Stages
Edith Byrne, Association Program Educator I
Lake Erie Regional Grape Program
January 20, 2013
Eichhorn-Lorenz Phenological Stages:
- (1) Winter dormancy
- (2) Bud swelling
- (3) Wool (doeskin stage)
- (5) Bud burst
- (6) Green shoot
- (7) First leaf unfolded
- (9) 2 to 3 leaves unfolded
- (12) 4 to 6 leaves unfolded; inflorescence clearly visible
- (15) Inflorescence elongating; flowers closely pressed together
- (17) Inflorescence fully developed; flowers separating
- (19) Beginning of flowering; first caps falling
- (21) Early flowering; 25% of caps fallen
- (23) Full flowering; 50% of caps fallen
- (25) Late flowering; 80% of caps fallen
- (27) Fruit set; young fruits beginning to swell
- (29) Berries small; bunches begin to hang (4-6 mm)
- (31) Berries pea-sized; bunches hang (7-10 mm)
- (33) Beginning of berry touch
- (35) Beginning of berry ripening
- (38) Berries ripe for harvest
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