hootowlfeathers said:Thank you for your response! We used "organic plus" potting mix and also used tomato fertilizer when we potted it. So both are potentially our problem? Should we repot (without extra fertilizer) as well as maintain moisture?
Also, the other four plants do not seem to be affected. We did them all the same.
Do you know if the "organic plus" potting mix contained any calcium? I looked on Google and didn't see anything by that name. Usually soluble fertilizers don't contain any calcium, so if you're using something like Miracle Gro water soluble tomato food, it will not be providing any so it can only come from the potting mix and/or irrigation water.
Some cultivars are more susceptible to blossom end rot than others which is probably why your others are not affected (or are they all the same cultivar?).
I do not think you need to flush out the potting mix fertilizer (in point of fact, it is almost never done, as it causes no problem needing to be corrected.) I WOULD suggest that you do 2-3 things this year : pick off/throw away all affected fruit, correct/treat with the slurry and add 1 tablespoon calcium nitrate per week beginning ASAP
DaisyI said:The majority of the time, with container grown tomatoes, the calcium deficiency is caused by erratic watering. If you are still worried, mix 1 tablespoon of Epson salts in 1 gallon of water and spray the foliage. Do it when the sun's not shining on the plant.
DaisyI said:The Epson salt spray had nothing to do with calcium. Its just another fix for blossom end rot causes.
I was thinking ahead of myself. Water consistently, add calcium then add magnesium. It was next in line...
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