Tomatoes

I don't have any ready for picking yet but it looks like I will have some cherry tomatoes ready in a few weeks which is earlier than what I have been getting since gardening at my current home. I don't start getting regular tomatoes until August (right now I have only a few small green ones and lots of blossoms). Haven't quite figured out why it takes until August. I don't think its from the couple of shovels full of manure I put in each tomato hole. The manure is aged. I mainly use the manure to help the soil hold moisture in the sandy soil. I think its mainly from getting only 3 to 4 hours of direct sunlight each day. I guess the only way to tell for sure would be to get my soil tested and see if its missing anything for proper fruiting. I already have plants that the base stalk is thicker than my thumb. My plants grow rather tall. I am limited on space (although you would think I wouldn't with a 20x35 garden) and so I stake my tomatoes using 8 foot 1x2's. As I may have mentioned before, the only fertilizers I have been using are horse manure, leaf and grass clippings and a one time shot of fish emulsion (this year I didn't get to it before the flowering started). I am planning on adding some rock phosphate to the soil next spring as well as asking some family members to save the ashes from their wood burning stove this winter to add the ashes to the soil.