Drain tubes puncture the protective barriers between the rotted and healthy.
Flush cuts are pruning cuts made as close as possible to the trunk or main branch. They destroy the tree’s natural defense mechanisms that promote wound compartmentalization and callus formation. When pruning trees, make the final cut just beyond the branch collar and branch bark ridge. Flush cuts, and the woundwood that closesover the cut, tend to be oval in cross section; whereas, woundwood on collar cuts closes in a more-or-less circular fashion. There are exceptions to this on certain trees that present an oval cross section at the branch base.
A flush cut should not be used on tree planted in urban landscapes. Flush Cut: Decay from inappropriate pruning cut. This decay and developing hollow resulted from a pruning cut made too close to the trunk.
Care for Tree Wounds: Proper care of tree wounds encourages callus growth and wound closure.
The natural protection boundary was removed when the branches were removed allowing decay to begin the the trunk. Woundwod that closes over a flush cut. Cutting the limb flush with the trunk will leave a larger area to callus over and a greater chance of decay organisms entering the wound.
The optimal pruning time is in the winter (dormant season) when temperatures and infection rates are lower and when trees are not actively growing. Flush cuts encourage decay at the top and bottom of the cuts.
They also destroy the natural protective zone between the trunk and the branch and can cause several serious tree problems including discolored wood, decayed wood, wet wood, resin pockets, cracks, sun injury, cankers, and slowed growth of. Perfect tree saw tree buster land clearing flush cut brush and tree clearing review.
Cavities in trees are voids where fungi have rotted healthy material.
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