Plant fall Tomato transplants under shade cloth. It’s counter-intuitive to plant anything right now, as hot and dry as it is in July, but the idea is to get your Tomato plants big and blooming so those flowers can set fruit as soon as the heat breaks. (Typically, Tomatoes won’t set fruit if the temps are above 90°F.) Be sure to use shade cloth to allow your transplants to acclimate themselves to the heat. Also consider using Plant Success, Biozome, and Maxicrop Seaweed to reduce transplant shock and promote strong roots. Seaweed is also a great anti-stressor for plants. If you keep your plants healthy through the heat, you should have loads of Tomatoes in the fall.
Tomato-growing tip: Keep moisture levels in the soil as even as possible. Tomatoes are tropical plants and they don’t like to be drought stressed. They don’t like to be too wet, either, but definitely don’t let them droop repeatedly. Whether they’re new fall transplants or spring plants that you’re carrying through the summer, consistency of watering is crucial to produce healthy plants and lots of pretty fruit. Among other problems, swings in moisture levels causes Blossom End Rot and Cat-facing.
http://www.naturalgardeneraustin.com/what-to-do-in-July.html
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