College of Agriculture & Natural Resources

• Northwest Michigan fruit regional report – June 25, 2013

  Published on June 25, 2013
  Recent heat has increased insect activity slightly, but fruit continues to size at a slow rate.

• Northwest Michigan fruit regional report – July 21, 2015

  Published on July 21, 2015
  Cherry harvest is in full swing and cherry fruit fly and spotted wing Drosophila numbers are on the rise. Apple maggot adults are also active.

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  West central Michigan tree fruit update – May 16, 2017

  Published on May 16, 2017
  The extent of frost damage is starting to become clearer as young fruit continue to develop.

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  Southwest Michigan fruit update — May 15, 2018

  Published on May 15, 2018
  Plants continued to develop rapidly with last week’s warm, summer-like weather. Rain and cooler weather was the story for the weekend.

• Grand Rapids area tree fruit update – June 11, 2019

  Published on June 11, 2019
  Apple bloom is coming to an end.

• Grand Rapids area tree fruit update – May 5, 2020

  Published on May 5, 2020
  Tree growth is very slow and cold temperatures are on the horizon.

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  Southwest Michigan fruit update – April 29, 2025

  Published on April 29, 2025
  Bloom is coming (and in many cases, it is already here).

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  2024 Tree fruit season wrap up

  Published on November 5, 2024
  Looking back at 2024 and preparing for next season with fall IPM practices.

• Using gibberellic acid to manage crop load in cherries

  Published on May 31, 2016
  To help manage crop load in cherries, growers should apply gibberellic acid to cherries when terminals have five to seven leaves.

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  Southwest Michigan fruit update – May 18, 2021

  Published on May 18, 2021
  Tree fruit crops are beginning to size, making load assessments easier this week. So far, most crops survived the April freezes well.

• Growing degree-day accumulations around Michigan

  Published on August 16, 2017
  Use MSU Enviroweather to determine whether heat units where you are located are behind, ahead or even as compared to normal.

• Southeast Michigan fruit regional report – Aug. 27, 2013

  Published on August 27, 2013
  European plum harvest is starting at a few farms; fall red raspberry and blackberry harvest continues as does summer apple varieties; and peach and blueberry harvest is winding down.

• Michigan spotted wing Drosophila report for August 18, 2015

  Published on August 18, 2015
  High pressure from spotted wing Drosophila continues and some growers are still not aware this pest is a statewide problem. Fortunately, susceptible crops can be protected.

• West Michigan tree fruit regional report – April 7, 2015

  Published on April 7, 2015
  Tree fruit development is slightly delayed in west Michigan, but growers should be ready.

• Michigan brown marmorated stink bug report for August 29, 2014

  Published on August 29, 2014
  A single brown marmorated stink bug adult and two nymphs were caught near Stevensville, Michigan during the week of Aug. 22-29, 2014.

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  East Michigan fruit update – Aug. 18, 2020

  Published on August 18, 2020
  Brown marmorated stink bugs are being found in apples and peaches over the past week, with some feeding damage seen in apples.

• Clarifications about using the insecticide Belt

  Published on May 16, 2016
  Tree fruit growers can continue using the insecticide Belt during the 2016 growing season while decision to withdraw product is in review.

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  Find the right water testing lab for Food Safety Modernization Act Produce Safety Rule compliance

  Published on April 14, 2020
  Although the Food Safety Modernization Act has added new testing methods to the approval list, finding the right lab still isn't easy. Use this map to find a lab near you.

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  Northwest Michigan fruit update – July 15, 2025

  Published on July 15, 2025
  Growers are harvesting sweet and tart cherries. There is significant pressure from American brown rot and spotted wing drosophila with the warm and humid conditions.

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  Spotted wing Drosophila statewide monitoring reports start next week

  Published on June 9, 2015
  Traps are going up this week in all major fruit producing counties to monitor for spotted wing Drosophila (SWD) in 2015. No flies have been caught so far in our earliest traps in southwest Michigan.