There are many misconceptions about planting trees or the way a trees root system grows. Some people claim that the trees root system, mirrors their top growth. Not true. Most plants have the majority of their root system in the top six to twelve inches of the soil-even trees. The entire root systems of most trees can be found within three feet of soil. The spread of the root system however, can be very extensive, often extending 2-3 times the spread of the crown. When planting a new tree, digging holes to China isn't helping anyone-except perhaps the chiropractor. If possible, dig a hole a minimum of three times as wide as the plants root ball, but only as deep as the root ball is. Don't replace the existing soil. Many gardeners throw away the rocky, poor soil, and backfill with potting soil or other rich amendment. That is not going to help the plant at all. Instead, it will containerize the plant in the ground, or create a swimming pool-either situation is not good for you tree. You can amend the fill by mixing organic matter with the existing soil. By amending a wide area and digging a wide berth, the root system will be encouraged to spread into the surrounding soil. If all you do is amend a hole large enough to plant in, you containerize the plant in the ground. Where would you rather grow, in the nice rich potting soil in the hole or the pitiful rocky clay surrounding it? If you can't amend a wide area, don't amend at all. Make sure the depth of the hole is only as deep as the root ball, or slightly shallower. You need to allow for some natural settling of the soil, and you don't want to bury the plant too deep. The majority of the roots on the newly planted tree will develop in the top 12 inches of soil. If the tree is planted too deep, new roots will have difficulty developing due to a lack of oxygen. No fertilization should be used at planting. You want the root system to settle in and begin to grow the first season. Top growth can be more of an issue in year two.
There are many misconceptions about planting trees or the way a trees root system grows. Some people claim that the trees root system, mirrors their top growth. Not true. Most plants have the majority of their root system in the top six to twelve inches of the soil-even trees. The entire root systems of most trees can be found within three feet of soil. The spread of the root system however, can be very extensive, often extending 2-3 times the spread of the crown. When planting a new tree, digging holes to China isn't helping anyone-except perhaps the chiropractor. If possible, dig a hole a minimum of three times as wide as the plants root ball, but only as deep as the root ball is. Don't replace the existing soil. Many gardeners throw away the rocky, poor soil, and backfill with potting soil or other rich amendment. That is not going to help the plant at all. Instead, it will containerize the plant in the ground, or create a swimming pool-either situation is not good for you tree. You can amend the fill by mixing organic matter with the existing soil. By amending a wide area and digging a wide berth, the root system will be encouraged to spread into the surrounding soil. If all you do is amend a hole large enough to plant in, you containerize the plant in the ground. Where would you rather grow, in the nice rich potting soil in the hole or the pitiful rocky clay surrounding it? If you can't amend a wide area, don't amend at all. Make sure the depth of the hole is only as deep as the root ball, or slightly shallower. You need to allow for some natural settling of the soil, and you don't want to bury the plant too deep. The majority of the roots on the newly planted tree will develop in the top 12 inches of soil. If the tree is planted too deep, new roots will have difficulty developing due to a lack of oxygen. No fertilization should be used at planting. You want the root system to settle in and begin to grow the first season. Top growth can be more of an issue in year two.
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