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.
2026 Wild Blueberry Phenology Record and Weekly Report
Week of May 4 – May 8, 2026
Below is this week’s update on fruit development in crop fields.
| Date Visited | Locations | Closed Buds (T0) | Bud Swell (T1) | Early Bud Burst (T2) | Bud Burst (T3) | Tight Cluster (T4) |
|---|---|---|---|---|---|---|
| May 4 | Warren | 0% | 8% | 43% | 47% | 3% |
| May 4 | Hope | 0% | 23% | 30% | 44% | 3% |
| May 8 | Orland | 0% | 22% | 62% | 11% | 5% |
| May 7 | Sedgwick | 0% | 14% | 68% | 18% | 0% |
| May 8 | Searsport | 0% | 17% | 82% | 1% | 0% |
| May 4 | Aurora | 0% | 38% | 61% | 0% | 0% |
| May 5 | Jonesboro | 0% | 53% | 47% | 0% | 0% |
| May 4 | Whiting | 3% | 54% | 43% | 0% | 0% |
No notes to record.
Maine Mesonet
The Maine Mesonet website provides real-time, high-quality weather and soil data from weather stations across Maine. Because the timing of wild blueberry development and key management events (like applying pesticides and placing bees) is strongly influenced by temperature, moisture, and other environmental conditions, having localized, up-to-date measurements helps growers track phenological stages more accurately and make better field management decisions.
Phenology Site Locations
Explore all the locations UMaine Extension’s Wild Blueberry Team visits to gather phenology data.
