Knowledgebase
Tomato Leaf Curling #874399
Asked June 24, 2024, 10:50 AM EDT
Gladwin County Michigan
Expert Response
Hi Danielle, thanks for the question.
How frustrating this must be. In most cases leaf curling is the plants response to stressors such as high heat and humidity, heavy pruning, et al. With the heat this could be the problem. What does the rest of the plant look like? How do your feed your plant? Do you or your neighbors use a lawn service? Do live close to a farm field? What did you replace the soil with? Are these being grown outside or in a greenhouse? That this would happen two years in a row would suggest some common factor.
I would look forward to your response.
Thank you for replying and the concern. The entire plant is curling, the stem seems to be thick and sturdy, but the leaves are all curled. They are in planters, large planters. I use rain water collected from the eaves of my barn to water them and water them in the morning daily. We live in a secluded area with no farm fields or neighbors around and we do not use any lawn services or spray for weeds, pests, etc. This year I used bought potting soil to fill the pots, not miracle gro, just a common potting soil. I used the soil removed from last year to plant beans and squash and they are growing just fine. Prior to last year, I was able to grow tomatoes in these pots just fine, I just can’t figure out what is different last year and this year.
Thank you!
Danielle Schrock
Consumer Horticulture Instructor
Michigan State University Extension
555 W. Cedar Ave
Gladwin, MI 48624
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From: ask=<personal data hidden> <ask=<personal data hidden>> On Behalf Of Ask Extension
Sent: Tuesday, June 25, 2024 8:49 PM
To: Schrock, Danielle <<personal data hidden>>
Subject: Re: Tomato Leaf Curling (#0144317)
Hi Daniel,
You could submit a sample to the Plant & Pest Diagnostics (msu.edu) for a fee. If you do make sure you follow the tips for sample submission.
On another note, have you looked at these plants under magnification. Broad mites can cause leaf curling. They are very small, smaller that spider mites.
Broad Mites on High Tunnel Tomatoes | University of Maryland Extension (umd.edu)