Real-Time Wild Blueberry Phenology

About the Wild Blueberry Phenology Tracker

The Wild Blueberry Phenology Tracker allows users to track the growth and development of wild blueberries across different regions as well as assist researchers, farmers, and enthusiasts understand the phenology of wild blueberries, which refers to the seasonal timing of biological events like bud break, flowering, and fruit ripening.


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


2025 Wild Blueberry Phenology Record and Weekly Report

Week of June 16 – June 20, 2025

Below is this week’s update on fruit development in crop fields.

Week 10: Crop Field Plant Development

% Stage
Date Visited Locations Open Flowers Petal Fall (Pin Head) Green Fruit
16-Jun Warren 0% 32% 68%
16-Jun Hope 0% 30% 70%
16-Jun Orland 0% 34% 66%
16-Jun Sedgwick 0% 62% 38%
16-Jun Searsport 0% 44% 56%
16-Jun Aurora 0% 40% 60%
16-Jun Jonesboro 1% 44% 54%
16-Jun Northfield 0% 64% 36%
16-Jun Whiting 0% 44% 56%
Prune emergence was observed at all sites.

Phenology Site Locations


Winter kill
Winter Kill

Past Phenology Data: