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My monarda are drying up and dying one-after-another sequentially #874145

Asked June 22, 2024, 2:27 AM EDT

The plants were stunted - only about 8" tall - but green. In just a few days a libe of 10-12 plants dried up in sequence. When I pulled the dead plant out, the roots looked like they were possibly eaten and covered in tiny white spots. In just a few day, another line of monarda approximately 2 ft away have begun exhibiting the same symptoms. What is causing this? I was going to plant more, but obviously not now. I'm also afraid to plant anything else in this area. What do you think is the cause and what should I do? Thank you for your help!

Hennepin County Minnesota

Expert Response

Thank you for writing.
The condition looks like root rot. Usually this is caused by wet soil that is poorly draining.
Send me a picture of the patch of plants.
Dump a half trowel of dirt on a paper towel and send me a picture.
Steve Miles, Master Gardener, Hennepin County MN (I am a human being, not a bot nor AI). I am an avid gardener but am not a degreed or certified horticulturist or arborist. I am happy to receive follow-up questions if my responses are incomplete or unclear.  This is the University of MN' garden soil testing service.  https://soiltest.cfans.umn.edu/testing-services/lawn-garden This is guidance on how to find a tree expert.  https://extension.umn.edu/planting-and-growing-guides/how-hire-tree-care-professional The Minnesota Landscape Arboretum is a wonderful place to see and learn about plants that grow in Minnesota. https://mngardens.horticulture.umn.edu/minnesota-landscape-arboretum Replied June 23, 2024, 12:17 PM EDT

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