A. Pruning paint might help in this case and may be worth a shot. Most people in the know no longer recommend pruning paints to cover wounds on trees. They just sanitize it and let it air dry.
The reason for not recommending pruning
paint is because research has found pruning paints to be primarily cosmetic and
do not assist the tree in healing. Healing is best if the wound is left alone without
the use of paints.
Topworking an apple tree to a new variety using pruning sealer and nursery tape to seal in moisture until healing is underway. |
There is some research that supports
the idea pruning paints may actually cause some harm to an open wound. But
pruning paint will not kill a tree or severely weaken a tree. Compounds similar
to pruning paints are still used in propagation of trees such as grafting and
topworking.
In this particular case I would go
ahead and try it since the benefits will probably outweigh any negatives to the
tree.
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