As long as your pots are white you should not have a problem with the aggregate heating up. What type of growing medium are you using. If your plants were not getting enough water they would be wilting in the heat.
If you are using the new Tomato Tone 4-7-10 I would say the plants are not getting enough nitrogen which is needed for the growth phase. Once you start getting blossoms is the time to use a formula like Tomato tone. After fruit set you can again increase the nitrogen.
Primary problem I had with heat this year was fruit set which there was none. After the temperatures returned to the 80's my plants began setting fruit again. And this was the same for my containers as well as my raised bed at work where I have 6 tomato plants in the ground. Ami
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Life's journey is not to arrive at the grave safely in a well preserved body, but rather to skid in sideways,
totally worn out, shouting ‘...Holy Crap .....What a ride!'
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