I have several varities of apple trees planted in part pf my yard. The Harleson does produce very well and the fruit stays on the tree a long time. Another tree that ripens early, early August, is the State Fair, also a heavy producer. I don't really care for them, but the different strains of red delicous will also have a lot of fruit and ripens latter into October. You should always plant at least 2 trees so that they will cross pollinate even with those that are listed as self-pollenators because they will produce better. If you are going to plant these trees randomly through your property I would suggest planting two or three varities in one location. If you plant early rippening, mid and late rippening trees you can draw the deer early clear through part of November. Fertilize them well but not with a high nitrogen fertilizer. I always get it mixed up but I thnk you need a lot of potash rather than nitrogen. Remeber that next years apples set on this years new growth so some trees might might produce heavy on year and light or not at all the next, another reason to vary your plantings. Lots of times you can buy trees really cheap as left over stock after the spring planting season on clearance sales.