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Updated: September 13, 2021

Spotted Wing Drosophila in Cherries in Southern Maryland

Growers and an alert county agent, Ben Beale, have found what most likely will be an infestation of spotted wing drosophila (SWD) in cherries in southern Maryland (St. Mary’s County). I say "most likely" because I have the cherries and the maggots but it is very difficult to identify SWD from other fruit or vinegar fly maggots.
Cherry fruit with SWD oviposition sting (white arrow), exit hole for maggot (yellow arrow) and the maggot (green arrow)
Updated: September 13, 2021

Spotted Wing Drosophila Found in Blueberries and Cherries in Maryland

A few blueberry and cherry growers in central Maryland have reported fruit damage to their crop from Spotted Wing Drosophila (SWD) this week. If you grow any small fruit such as blueberries, cherries, blackberries, raspberries it would be best if you check these crops for the presence of SWD.
Spotted Wing Drosophilia
Updated: July 27, 2021


Peach production information for commercial growers.
Updated: July 27, 2021


Information on starting and managing a cherry orchard for commercial production.
Hands outstretched holding blue basket full of sour cherries
Updated: May 18, 2021

Sample Collection & Preparation for Perennial Fruit Crops

Sample Collection & Preparation for Perennial Fruit Crops
Updated: May 3, 2021

Tree Fruit Pest Management

Resources for tree fruit pest management for commercial growers.
Stink Bug
Updated: March 8, 2021

Fungicide Resistance Management Guidelines

Fungicide Resistance Management Guidelines for Apple Scab, Powdery Mildew, Brown Rot, and Peach Scab Control in the Mid-Atlantic United States, by Alan R. Biggs, West Virginia University and Kari Peter, Penn State University.
Updated: March 5, 2021

Effective Insecticides for Brown Marmorated Stink Bugs

Based on laboratory bioassay results and field screening trials as of February 7, 2011. By Kent Smith, USDA-ARS
brown marmorated stink bug
Updated: March 2, 2021

Tree Fruit Production Guides

A list of tree fruit production guides.
ripe apples on a tree