Todd said:

In my little organic garden, I have three cherry tomato plants:
a sun gold, a sweet 100, and a black. I have one Cherokee
Purple tomato plant.

The sun gold and sweet 100 I have been getting about five
tomatoes a week.

I have only got one from the black (although I now have
about 10 green one).

The Cherokee Purple has only given me flowers. They turn
black on fall off.

This past two weeks, nothing has ripened.

Daytime temperatures are about 90F; night time about 52F.

Oh, and the plants themselves are growing very nicely. They
range from about 4 to 5 feet tall. They are fertilized only with
organic compost:
http://www.fullcirclecompost.com/SoilEssenceEliteN.php

Way too much nitrogen for tomatos. You would be better off using
a fertilizer formulated for tomatoes, such as Espoma's Tomato-tone.

Best would be to have your soil tested and find out what your limiting
nutrient(s) might be.
--
Pat in Plymouth MI

"Yes, swooping is bad."

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