Black spots on tomato leaves

tpipAugust 2, 2012

My tomato plants have developed black spots on their leaves; see the photo. It started with the older bottom leaves, but now it seems to have spread to most of the leaves. The plants are growing in containers. I water them regularly, but have not used any fertilizer. The water is calcium rich. The tomatoes themselves seem fine, the first few are starting to develop a bit of color.

Should I be concerned? Is there anything that I can do? Using pesticides is not an option here.

Thank you for reporting this comment. Undo
jean001a(Portland OR 7b)

This happened to me this year. (Or it was the first time I put 2 & 2 together and came up with 4!)

Water shortage 7 to 10 days ago. May have been very minor but enough to damage cells not against the veins. The spots will darken a bit, but will continue to function.

    Bookmark   August 2, 2012 at 1:39PM
Sign Up to comment
More Discussions
Tomato Wilt
Which Heirloom varieties are wilt resistant
Yellow spots on leaves
Hi, I have several tomato plants that I started as...
Help Pls! Tomato branches falling off
Hi all - A few weeks ago I started to notice a marginal...
Tomatoes - yellow leaves and one plant starting to become droopy
Hi guys, I'm a novice gardener in Queensland and have...
Help Identifying Problem
I need help identifying what's happening with my tomato...
People viewed this after searching for:
© 2015 Houzz Inc. Houzz® The new way to design your home™