Now you might be thinking that I'm jumping the gun here in late October. Nearly everyone recommends planting fruit trees in the spring, although you can get away with it in the fall if you have mild winters and protect the newly transplanted roots with plenty of mulch. But good organic tree-planting practice starts in the fall even if your trees won't go in the ground until spring. We went to the Maine Organic Farmers and Gardeners Association to find out more. Here is what they recommend.
Find a good location for your trees. Remember, unless you or your neighbor have nearby apple trees for pollination purposes, you'll need to plant more than one. Apple trees need as much sun as they can get. Don't plant them in the shade of a building or beneath other trees. The more air circulation a tree has, the less likely it is to develop blights and fungus. A slight slope where the air will "drain" downhill if it's cool is best.
Consider the soil. You should have a good two feet of loam to plant in even if the soil underneath is clay or otherwise hardpack. The next step is a familiar one: start a compost pile where you'll plant the tree. Break the soil up in an area a bit bigger than the size of a root ball. You might first want to first throw down some rock phosphate to give your newly planted trees the minerals it will need next spring.
Some gardeners recommend throwing down lime or a source of calcium but don't over do it. Apple trees like a slightly acidic soil — pH of 6.8 – 6.5 — though they'll tolerate anything close. Then start working in as much organic material as you can until you have a modest compost heap. When spring comes, the ground will have plenty of good stuff for your tree and it will be more easily dug. If you'd rather not start a whole heap, throw down some compost where the tree will be planted. Do it again in the spring. The more beneficial microbes inhabit the soil where a tree is planted, the less likely it is that the tree will have problems.
The other thing to consider is which type of apple to plant. Turns out the type of tree you stick in the ground goes a long way to determining the problems (or lack of) they may have. The best source of information for this is you local nursery or university extension service.
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