I've got a Purple Prudence Tomato plant in a very large container on my porch. I've been feeding it regularly with soluable Bone Meal and watering twice daily. I have it in a wire cage. It gets 6+ hours of sunlight, though not as much as I'd like as our balcony is easternly facing.

It's got a ton of tomatoes on it, but they are ripening as grape tomatoes, which isn't typical of this variety (at least I didn't think it was). Any thoughts on what went slightly wrong so I can either correct it or learn for next year?