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 April 13 – April 17, 2026

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

Date VisitedLocationsClosed Buds (T0)Bud Swell (T1)Bud Burst (T2)
April 16Warren2%98%0%
April 16Hope2%98%0%
April 16Orland7%92%0%
April 16Sedgwick1%98%1%
April 17Searsport14%86%0%
April 14Aurora24%76%0%
April 15Jonesboro1%99%0%
April 14Whiting2%98%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.

The logo for Maine Mesonet. An illustration of a sun is above the text "Maine Mesonet" and a field illustration is below.

Phenology Site Locations

Explore all the locations UMaine Extension’s Wild Blueberry Team visits to gather phenology data.


Winter kill
Winter Kill

Past Phenology Data: