Wild Blueberry Phenology Tracker


2021 Weekly Phenology Report

Updated 6-11-21

For phenological stage descriptions and photos please visit the Maine Wild Blueberry Phenology Guide (PDF)

For past 2021 phenology data: 2021 Wild Blueberry Phenology Record
For past 2020 phenology data: 2020 Wild Blueberry Phenology Record

Week 9: June 07 to June 11, 2021
Crop Cycle Prune Cycle
Stages: Bloom Closed Flowers Open Flowers Pin Heads Green Fruit Avg. # of Emerged Shoots*
Locations %Bloom
Warren 0% 0% 0% 33% 67% 12.2
Hope 0% 0% 0% 49% 51% 7.8
Searsport 0% 0% 0% 38% 62% 13.2
Sedgwick 2% 2% 0% 63% 35% 16.3
Ellsworth 0% 0% 0% 44% 56% 17.2
Deblois 5% 3% 2% 55% 40% 10.7
Montegail 1% 1% 0% 46% 54% 10.7
Jonesboro 2% 2% 0% 69% 29% 11.7
Wesley 0% 0% 0% 59% 41% 10.8
Marion 3% 3% 0% 46% 51% 8.5

*The average number of emerged shoots are per 1 linear foot (#/1′), averaged across multiple clones per location. Locations that were burn pruned are exhibiting slightly later shoot emergence in the prune cycle.

Phenology Site Locations


Winter kill
Winter kill