Also, would bud set or blossom set or whatever it is called help? Is it considered organic? (It's a small spray bottle, and you apply a few mists to every flower.)

Blossom set was developed to be used at cooler temps when pollination is not so good. Not when the temps are OK for pollination.

Blossom set induces what's called parthenocarpic fruits which develop in the absence of normal pollination, which have few to no seeds and often malformed fruits.

Yes, I know that almost every place says use it, use it to help set fruit, but it's sales they're after, not so much truth IMO.

Carolyn

Sounds like way too much water to me too. That could account for the leaf roll, it is a response to physiological stress. As Ohiofem said, you should let the soil dry out between waterings.

As a general rule, tomatoes need an inch of water every week. An inch of rain is exactly that, water that is one inch deep. One inch of rainfall equals 5.6 US (4.7 Imperial) gallons of water per square yard. Cool weather or soil with lots of clay needs will be less, hot weather or sandy soil will need more.

Dig down with your finger about 4", is the soil wet, dry, or just right? If it is wet, don't water, if dry then water. If it is just right, check again the next day. Water deeply once or twice a week. Watering daily encourages shallow roots which means the plant is affected more by variations in soil moisture. In my garden during the heat of the summer, I water deeply every 4-5 days, early spring I may only water every 8-9 days and when the weather is moderately warm (70-80 degrees F), about once a week.

Mulching heavily (to a depth of 6 - 8 inches) with compost, straw, hay, rotted leaves, grass clippings, even shredded paper or sheets of paper or cardboard helps maintain a consistent moisture level.

As for the blossoms dropping, you had some temps that are in the range that cause blossoms to drop. When the temps are moderated, you will get more blossoms that will set fruit.

I hope that helps.

Betsy