I've got exactly two red cherry tomatoes that are almost ripe, with lots more on the way! I've got a total of 10 plants out, various varieties, and they're all doing well, but the "Giant Beefsteak" plants are anything but giants. The plants are considerably smaller than my others, and they don't have as much fruit, although what they do have is good sized. Is that pretty normal for that variety, or am I doing something wrong?