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Stem girdling roots on a nursery tree


roots growing straight out
Roots should grow more-or-less straight out from the trunk as shown above.

stem girdling rootsRoots on the tree above grew to the edge of the container and were deflected up to the top of the substrate. Then they grew toward the trunk. This was caused by planting too deeply in the container and not cutting roots when tree was potted to the larger size. This root will restrict proper trunk development after it is planted into the landscape and can lead to tree instability. Substrate line is shown on trunk as a red line.