Answer: Since your summer season is short and cool, you'll have best success with some of the early-ripening tomato varieties. These grow well in cool temperatures and the indeterminate types will provide fruit all summer long. Try Burpee's Early Pick, French Rose, Juliet Hybrid, or Fourth of July.
I'm not able to find "San Francisco Fog" tomato seeds either, but one or more of the varieties listed above should grow well for you.
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