If you haven’t done it already, now’s the time to cut back your tomato plants.*
Why? To focus the plant’s energy on ripening its existing fruit, rather than on producing new flowers and starting new fruit, which won’t have time to grow and ripen before the first frost. Now you know.
*Technically you’re supposed to do this four weeks before the first frost date for your area. In Vancouver, that’s November 5, but I find that my tomatoes stop growing and ripening long before then.