2011 OrganicA Orchard Bud Stages
UVM Horticultural Research Center, South Burlington, VT

OrganicA Orchard 1 (Planted in 2006)

Date
Degree Days base 50°F1 from Jan 1
Ginger Gold
Honeycrisp
Liberty
Macoun
Zestar!
4/06 0
Dormant
Dormant
Dormant
Dormant
Dormant
4/11 7 Silver Tip Dormant Dormant Silver Tip Silver Tip
4/20 13 Green Tip Dormant Silver Tip Silver Tip Green Tip
4/25 15 1/4" Green Tip Green Tip Green Tip Green Tip 1/4" Green Tip
4/28 - 1/2" Green Tip - Early Tight Cluster 1/4" Green Tip 1/2" Green Tip - Early Tight Cluster 1/2" Green Tip Tight Cluster
5/1 39 Tight Cluster 1/2" Green Tip Tight Cluster 1/2" Green Tip Tight Cluster
5/9 62 Pink Early Pink Early Pink Open Cluster Pink
5/13 - King Bloom Early Pink King Bloom Pink Late Pink
5/15 100 Full Bloom King Bloom Full Bloom King Bloom Full Bloom
5/22 140 95% Petal Fall 10% Petal Fall 95% Petal Fall 50% Petal Fall 75% Petal Fall
5/25 180 Petal Fall Petal Fall Petal Fall Petal Fall Petal Fall

OrganicA Orchard 2 (Top-grafted in 2006)

Date
Degree Days base 50°F1 from Jan 1
Ginger Gold
Honeycrisp
Liberty
Macoun
Zestar!
4/06 0
Dormant
Dormant
Dormant
Dormant
Dormant
4/11 7 Silver Tip Dormant Dormant Silver Tip Silver Tip
4/20 13 Green Tip Dormant Silver Tip Silver Tip Green Tip
4/25 15 1/4" Green Tip Green Tip Green Tip Green Tip 1/4" Green Tip
4/28 - 1/2" Green Tip - Early Tight Cluster 1/4" Green Tip 1/2" Green Tip 1/4" Green Tip Tight Cluster
5/1 39 Tight Cluster 1/2" Green Tip Tight Cluster 1/2" Green Tip Tight Cluster
5/9 62 Pink Early Pink Early Pink Open Cluster Pink
5/13 - King Bloom Late Pink King Bloom Pink King Bloom
5/15 100 Full Bloom King Bloom Full Bloom King Bloom Full Bloom
5/22 140 95% Petal Fall 25% Petal Fall 95% Petal Fall 50% Petal Fall 95% Petal Fall
5/25 180 Petal Fall Petal Fall Petal Fall Petal Fall Petal Fall

1 Weather data collected with on-site automated Davis Vantage Pro weather station. Davis Instruments Corp., Hayward, CA.