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Dying Tomato Plants #934349

Asked June 05, 2026, 2:15 PM EDT

I started 33 tomato plants giving most away. I planted mine 5/16. They looked beautiful the next day but the day after leaves got brown on the edges became limp and most of the 14 plants appear dead. Ones I gave away are doing well. Should I have my soil tested before I try again? Ihave landscape cloth down but I cut large holes to put the plants in.

Cass County Michigan

Expert Response

Hi Carol, thanks for using Ask Extension.

The pattern you’re seeing does not appear to be caused by soil nutrients or disease. Nutrient issues do not kill tomato transplants that quickly. This is also a site-specific problem, since the ones you gave away are doing fine.  The most likely cause is heat and or root injury from a combination of conditions.  The black landscape fabric, even with the generous planting holes can create a very hot environment with the warm weather we have had.  This can rob moisture from the planting hole, and the crown and root zone can overheat and desiccate the plants within hours.  Fertilizer close to the plant can also create plant stress.  Dry winds can make things even worse. The condition of the plants in the pictures is consistent with this type of injury. Even a good hardening off of the plants would not have helped.

A soil test is always useful long‑term, but this problem isn’t caused by soil chemistry, so you don’t need to wait for one before replanting. Also, a soil test in an area that has just been fertilized can compromise your overall results.  Fall is a good time for a soil test. 

Before replanting: 

• Pull back or remove the landscape fabric in the tomato area. 

• Water planting holes deeply before planting. 

• Plant in the evening or on a cloudy day.

• Keep fertilizer out of the planting hole. 

• Mulch lightly around the stem after planting to keep the soil cool and moist.

Check out the following link;

Planting the vegetable garden | UMN Extension

I hope this helps.


An Ask Extension Expert Replied June 08, 2026, 8:54 AM EDT
Thank you so much. I have removed the landscape cloth from around the tomatoes and peppers and made a much larger hole in it for cucumbers and squash.

On Monday, June 8, 2026 at 08:54:33 AM EDT, Ask Extension wrote:


The Question Asker Replied June 09, 2026, 9:10 AM EDT

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