• slide
  • slide
  • slide
  • slide
  • slide
  • slide
  • slide
  • slide
Tomato-Plants-Dried-Up-and-Died-THUMB.jpg

Tomato Plants Dried Up and Died

Every season my tomato plants start out great, but dry up and die before I harvest many fruit. I have moved the plants around the garden and even tried growing them in containers. Several things can cause tomatoes to dry up and die.

If the problem only occurred in ground I would have you check to see if any black walnut trees are growing in the area. The roots, leaves and fruit of these trees contain juglone that is toxic to tomatoes and many other plants. Since your container plants are also affected this would not be the cause.

Fusarium and verticilllium wilt cause similar symptoms. These diseases are in the soil so container gardens are a solution. Be sure to clean your pots with one part bleach and nine parts water and use fresh sterile potting mix next time you grow tomatoes in a pot.

Septoria leaf spot also causes browning. The lower leaves develop circular brown spots, turn yellow and eventually the whole leaf turns brown. The disease progresses up the plant until you have very few leaves. You usually have a decent harvest off some very ugly plants.

Early and late blights can also cause the symptoms you describe. Reduce disease problems with some simple planting and care techniques. Properly space and stake or tower plants to allow good air circulation and light penetration. This reduces the risk of disease.

Mulch the soil to prevent soil born disease organisms from splashing onto the plants. As a last resort you can treat tomatoes, at the first sign of disease, with a copper containing fungicide labeled for use on tomatoes. Repeat applications will be needed throughout the season. And as always, be sure to read and follow all label directions carefully.

Related

Upcoming Appearances


Jan. 26, 2022
Gardening for Wildlife
(webinar)

Jan. 29, 2022
WCBA's Home Building &
Remodeling Expo

West Bend, WI
(in-person event)

Feb. 2, 2022
Small Space Gardening
(webinar)

Feb. 11-13, 2022
PBS Wisconsin
Garden & Landscape EXPO

Madison, WI
(in-person event)

Feb. 18-20, 2022
NARI Milwaukee
Spring Home Improvement Show

Milwaukee, WI
(in-person event)

Feb. 23, 2022
Dahlias - Proven Performers!
(webinar)

March 1, 2022
Michigan Green Industry Assn.
Annual Tradeshow & Convention

Novi, MI
(in-person event)

March 5-6, 2022
​​​​​​​Maryland Home & Garden Show
Lutherville-Timonium, MD
(in-person event)

​​​​​​​March 26-27, 2022
​​​​​​​REALTORS Home & Garden Show
West Allis, WI
(in-person event)

Watch Melinda's past webinars ON DEMAND

Learn More

Book an Appearance

Learn More

Enter to Win
Your Best Garden & Landscape in 6 Lessons DVD set

ENTER NOW