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I am not sure if it's a disease or what? Not all my tomatoes' leaves are yellow. They are brown at the end of the leaves, too.
By ruby1 from Augusta, GA
You need some Epsom salts in it. On the package are instructions. Or google epsom salts. Have used this for years.
Also, clean up your bottom of the plants. They need air space. Good rule of thumb is nothing closer than 10 inches from the ground. Remove all plant materials. Both these suggestions also take care of bottom rot from tomatoes too.
OH, never splash water on your plants. They prefer being watered by laying the hose on the bottom dirt. Gentle flow rather than hurried spray. Rain water is different. That comes anyway and washes the plants. Hose water is not the same as rain water.
It is my belief that what you are describing is Tomato Blight.
It is a disease which can turn all the leaves yellow, then brown. Interestingly enough, it doesn't seem to affect the fruits. It's almost impossible, at least for me it was, to do anything like apply this or that and fix the issue.
Sometimes its windy, the plant uses more water, sometimes its hot and more water evaporates than gets to the plant. The variables are there so check your tomatoes daily and if they need water, give them some. regular correct watering fixes almost every problem in Tomatoes. Next year be sure to plant them in a different location, and also consider buying a blight resistant seed, because,
What would make my tomato plants leaves turn yellow? I am growing them in a Topsy Turvy Tree. I don't even have any tomatoes on them yet.
Hardiness Zone: 8b
By JEAN from Portland, OR
Usually when tomato leaves turn yellow the plant needs a few drops of vinegar in the water before watering. Good luck with your tomatoes. Windgate
My hanging tomatoes are looking good, but some of the leaves are yellowing. What am I doing wrong?
Hardiness Zone: 10b
By Gini from Carmel, CA
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Hardiness Zone: 6b
By Lonnie Gudger from Greeneville, TN
Add 1 T of Epsom salt to 1 gallon water for each watering. The magnesium will help green them up. You can also add 1 T all purpose fertilizer. If you add 1 T powdered milk as well, it will help prevent blossom end rot. (07/27/2010)
I purchased a Roma tomato plant that is about 12 inches high. It had thick, green foliage Memorial Day weekend. It is on my deck and now some of the leaves are turning yellow and brown and curling, mostly on the bottom. It looks like they are dying in places.
My daughter and neighbor said it is getting too much water. We have had quite a rainy season, but I am wondering if it is something else. I moved it to my front porch and it was even worse. I watered it and it looks better. It perked it up, but do I break off stems or leaves? It has been really hot also.
Hardiness Zone: 5a
By Beverly from Kewanee, IL
Maybe it's root bound and needs a bigger pot. (06/29/2010)
By judy oliver
Are you feeding it? Tomato plants need feeding once a week when the flowers appear and need to be well watered. Take off any side shoots that don't have flowers on them as these take all the goodness from the flower shoots. They also need sun to ripen them. (06/30/2010)
By jan nash
Why do my tomato plants leaves turn yellow?
Hardiness Zone: 10a
By weston kittinger from Palmdale, CA
You should try crushed egg shells around the plant! The calcium soaks in and helps the tomato plant. (06/16/2009)
I've read that the reason they turn yellow is because the soil doesn't have enough nitrogen which is what makes the plant green.
If you use some good fertilizer on it like Miracle Gro that should fix it. Hope this helps. (06/17/2009)
Get Epsom salts, I read that it is a magnesium deficiency. I followed the directions on the back of the bag and the leaves have quit turning yellow. (06/17/2009)
It depends upon how they are turning yellow. See this page for excellent information on common problems and their solutions:
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