
What is the Heats Affect on Michigan’s Blueberry Crops?
Scorching summer temperatures and limited rainfall are taking a toll on Michigan farmers, with the heat expected to shorten this year's blueberry U-pick season.
Michigan Blueberry Harvest Hit Hard in 2025 Heat

June and July 2025 brought intense heat that accelerated Michigan's blueberry harvest by nearly two weeks compared with previous years. Prolonged high temperatures can interfere with plant pollination and reduce bee survival by affecting the nutritional quality of pollen. Heat stress also takes a toll on blueberry plants, with growers facing crop losses of up to 40% in extreme conditions.
Excessive heat and prolonged dry conditions can severely damage blueberry plants. Leaves may turn brown, yellow, or black as the plants become stressed. The fruit can also develop spotting, sunken areas, shrivel, or wrinkle from heat exposure. In severe cases, portions of the berries may die, a condition known as necrosis.
Read More: Lake Erie Perch Decline Threatens Michigan Fish Dinners
Heat Wave Takes a Toll on Michigan Blueberry Harvest

According to FOX 17, another stretch of high temperatures is accelerating the ripening process on Michigan blueberry farms, forcing growers to work quickly to harvest the crop while taking extra precautions to protect both workers and the berries from the extreme heat.

Some Michigan blueberry farms have shifted to nighttime harvesting to cope with the extreme heat. Picking berries after sunset helps keep the fruit cooler, reducing bruising and minimizing additional heat-related damage during harvest.

If you're planning to pick your own blueberries, experts recommend going sooner rather than later, as the season may end earlier than usual. Be sure to bring plenty of water and take precautions to stay hydrated while picking in the extreme heat.
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Gallery Credit: Kristen Matthews
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