Ask a Question forum: Tomatoes - Blossom End Rot ?

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Name: Carol Texas
Central Texas (Zone 8b)
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Ecscuba
Aug 8, 2017 1:40 PM CST
First year I've ever gotten any tomatoes from plants grown. I went away on vacation for a few weeks, figuring the crop was a lost cause (July to early August in Texas)? I was surprised on returning that many had ripened. But they have what I think is blossom end rot ? Reading about that, it seems maybe they didn't have enough calcium ? I tested the PH and it was right around 7. Not sure at this point if I should add any calcium (lime)? I have a # of green ones on there and they don't have the end rot problem -- yet . Would like to be able to harvest what's left. Anyone have thoughts on what I should do at this point?

They have been on an auto watering system --every other day (and they are in pots). I fertilized them with "juice" from my composter as well as some of the compost -- plus I threw some extra organic fertilizer on them twice (in the early stages). Perhaps it was too much.
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Name: Sue
Ontario, Canada (Zone 4a)
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sooby
Aug 8, 2017 2:00 PM CST
It's believed to be caused by fluctuating soil moisture for the most part. The calcium issue is not necessarily related to a shortage in the soil so I would not add lime if your pH is 7. It seems it commonly occurs in tomatoes in pots, I had the same thing last year, perhaps it is more difficult to maintain even moisture levels. This year I put them in the ground and so far they look fine. Don't be tempted to give them Epsom salts, which is sometimes recommended, it could actually make it worse because the extra magnesium interferes with the calcium. For more info some Extension articles:

http://extension.missouri.edu/...

http://www.clemson.edu/extensi...

http://extension.uga.edu/publi...

http://www.omafra.gov.on.ca/IP...
[Last edited by sooby - Aug 8, 2017 2:08 PM (+)]
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Name: Daisy I
Reno, Nv (Zone 6b)
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DaisyI
Aug 8, 2017 2:28 PM CST
Listen to Sooby. She is absolutely right.
Life is not a journey to the grave with the intention of arriving safely in a pretty and well preserved body, but rather to skid in broadside, thoroughly used up, totally worn out, and proclaiming...."WOW What a Ride!!" -Mark Frost

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Name: Carol Texas
Central Texas (Zone 8b)
"Not all who wander are lost."
Region: Texas Fruit Growers Bookworm Dragonflies Composter Greenhouse
Cactus and Succulents Organic Gardener Hummingbirder Herbs Garden Art Gardens in Buckets
Image
Ecscuba
Aug 8, 2017 2:30 PM CST
Thank you @sooby We had 100 degree days during this time, and maybe even though they had water every 2 days perhaps it wasn't enough. I'll have to strongly consider in ground planting next year.
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My passion is painting but gardening is running a close second.

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