Table of Contents
Why are the leaves on my tomato plants turning brown and dying?
There are a number of reasons why you may see leaf browning in vegetable plants: inadequate water, too much water, overzealous fertilization, soil contamination, disease, or insect infestation.
How do you tell if you are over or under watering tomatoes?
Check the soil around the base of tomato plants by inserting your finger in the soil to a depth of 2 to 3 inches. If soil is dry, the tomatoes are under-watered. If soil is soggy, your tomatoes have been over-watered. Soil should feel moist to the touch.
Why are my tomato plants drying up?
If the leaves seem to be dried up, then you probably aren't watering enough. Increase the amount of water you give them and make sure they're getting at least 6 hours of full sun every day.
Why are my tomato stems turning brown?
Symptoms and causes
Dead, rotten patches on the stems: A disease called Didymella stem rot (caused by the fungus Didymella lycopersici) can attack the stems of tomatoes causing brown, rotted patches, at any height but most often at the stem base.