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Leaves are turning brown from the bottom up

by Danielle

Q. I have two tomato plants in my garden. They grew up and out very quickly and appeared to be thriving during the beginning of the summer. The past couple weeks they have been looking worse and worse. There are lots of fruits on the plants but they take forever to ripen. I have noticed that the leaves are brittle and brown starting on the bottom, near the soil and has been working its way up. I thought maybe I was over-watering but I have since slowed my watering and they are still not looking the way I would like. I also have zucchini, pepper, onions, and cucumbers. My zucchini and cucumbers have been doing wonderfully all season but the past few days the zucchini is starting to look a little dead on the bottom as well. My peppers still are not growing. They were looking real bad for a bit but I cut back the watering and opened up the area for more sun and the leaves look better but no peppers. What is wrong with my garden? Could it be my water? I have also noticed this morning that that my hanging basket that was beautiful is looking a little yellow and crusty in the leaves as well.

A. It's been a tough summer for gardeners and you are not alone.

Tomatoes. It's natural as the season progresses for lower leaves to yellow and brown and even fall off. This is particularly true if you've had temperatures higher than normal, which creates stress in plants. Furthermore, as summer progresses, plants are working to both survive and produce enough fruit to ensure their species survival in perpetuity (that is, seeds!). If your weather is particularly hot, then ripening in tomatoes will slow.

Having said that, several diseases can impact tomatoes which produce yellowed and brown leaves. Most common are the Big Blight Three (Early Blight,Late Blight, and Septoria Leaf Spot.) Check out how how to tell them apart. Tomato wilts also present themselves with yellowed or brown leaves, particularly fusarium wilt and verticillium wilt.

Blight and wilts can impact other crops in the garden, too. Organisms overwinter in the garden and present themselves particularly when conditions create stress for plants.

Peppers. These plants thrive in dry conditions. They also take much longer to produce fruit than other crops in the garden (like tomatoes.) Plus, excess heat may be inhibiting pollination. Shake the plants to encourage blossoms to pollinate ... and be patient.

Good luck and happy gardening!
Your friends at Tomato Dirt

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Aug 01, 2015
Brown leaves
by: Pat

Gave a friend two tomato plants.He lives a couple miles up the road from me. His plants started browning along with his other tomato plants from bottom up about a month ago. They are about 2foot tall. The plants are full of fruit and are now ripening. Mine on the other hand are about 6 1/2 and flourishing so what is going on here with them.

Jul 24, 2015
Tomato leaves brown
by: Anonymous

My tomatoes are doing exactly the same thing, and my conditions are as described in the article. Thank you for letting me know that this is normal. I've had a great crop of tomatoes this year.

Jun 05, 2015
Same thing
by: Marty

I have been experiencing the same thing in Arizona with beefsteak tomatoes early girl tomatoes cucumbers and green beans the only thing I have seen is one white spider I've sprayed with garlic spray and that usually works good for me but I haven't seen anything else I'm stumped. if anybody has any idea please post to Note. Thank you.

May 31, 2015
No Zuccini
by: Don

I have been trying to grow Zucchini for 8 years and about a week after they get flowers on the end the flower falls off, NO ZUCCINI again this year! What am I doing wrong? I have heard that zucchini is about the easiest thing to grow. I grow tomato's and bell peppers with no problem but no zucchini. I'm getting mad!

Jun 18, 2014
by: Anonymous


May 27, 2014
brown on leaf tips and edges
by: Jim

What could be the cause of leaf edges and tips to turn brown on two week old tomato plants ?
I water early morning, and try to not overwater.


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