We’ve been having a cold summer here in the Bay area, with night time temperatures frequently in the low fifties. Tomato plants do not like it to be that cool, and while our tomato plants set a lot of fruit, the little green tomatoes just hang on the vine and stay both little and green.
We had one tomato plant covered with little green tomatoes, growing in a big pot that sat in a sunny place in the yard. A few days ago I carried it up to our second-floor deck, huddled up against the house where I thought it might be a little bit warmer. Sure enough, after just a few days the plant looks happier, and most of the tomatoes are turning red; while the tomato plants down in the yard are still covered in green tomatoes.
September tends to be the warmest month in the Bay area. Perhaps this cool weather will finally end, and suddenly we’ll find ourselves inundated with more tomatoes than we can eat.