![]() No matter which product you choose, remember that it should be applied as soon as possible after wounding or pruning, and in a thin yet complete, coating - More is Not Better! They offer no additional benefit than the asphalt emulsion pastes, but the solvents used make them unuseable for grafting because they can (minimal) damage the cambian layer., and they are not as convinient or fast drying as the aerosols. The liquid asphalt type sealers (non-emulsion), in my opionion are the last choice. care should be taken to get the material on the edges of the wound to control dieback, but NOT thickly! If it is applied to thickly it can lift off and create a "pocket", this is where the problems that have been related to use can develope. It is VERY important when using this type especially to apply the wound dressing in as thin a coating as possible while getting complet coverage. The asphalt emulsion wound dressings, have been shown to reduce dieback, offer good protection, are safe for use in grafing, but take longer to dry and to apply. Aerosol Tree wound dressing provide good coverage and protection from disease but due to the solvents the can not be used to seal grafts. I would like to point out that our product, Treekote, contains more asphalt (35%) than any of the other brands that we have compared it to (16%). The aerosol types are an asphalt cutback which results in a fast drying easy application. Of the aspahltic types there are the aerosol asphalt, asphalt emulsions (modified asphalt so that it is water soluable), and liquid asphalt. There are three basic types of aspahltic tree wound dressings as well as a couple of other types which I am not very familiar with. First, let me let you know that our company manufactures Treekote Tree Wound dressing. It is these pockets that can serve as host sights for pathogens. ![]() If Tree Wound Dressings are applied in a thick coating, when the tree wound begins to callus over it can "lift: the layer of Tree Wound Dressing off of the tree, creating a pocket behind the layer of Tree Wound Dressing. The tree will naturally compartmentalize the exposed area from within so there is no need to re-apply Tree Wound Dressing after the initial application it will do no good. When a tree is pruned or wounded, insects often feed on the sap at the exposed area and can spread harmful pathogens, and pathogens can also be spread through the air. The negatives associated with Tree Wound Dressings result from missue, specifically too thick of an application - more is NOT better! Recent studies have PROVEN that tree wound dressings help control the spread of tree diseases and reduce dieback (which is not really a concern with this type of pruning). A thin coating of Tree Wound Dressing should be applied immediately or as soon as possible after the pruning is done. Otherwise, decay-producing fungi can infect healthy parts of the trees.In reply to your question about applying Tree Wound Dressing, the answer is yes. When you are pruning maple trees, it is always a good idea to remove broken, diseased, or dead branches. It can also open up the center of the tree to let sun and air move through the canopy. Carefully removing branches can reduce or eliminate structural issues in a tree. Pruning also assists the tree develop of a sound branch structure. Regular maple tree pruning helps keep a tree the desired size and stops a tree from encroaching on its neighbors. Gardeners trim maple trees for a variety of reasons. For this reason, many gardeners say that the best time for pruning maples is in summer after the tree is fully in leaf. Once the leaf buds open, the sap is no longer under pressure and won’t leak out from pruning wounds. You can avoid this issue if you wait until summer to prune maples. If the tree is just a sapling, however, loss of sap may cause problems. You would have to remove an entire limb for the loss of sap to negatively impact a fully grown tree. However, maple tree pruning in winter generally won’t hurt a mature tree. This makes it look as if the tree is suffering. In late winter, when the days are warm and the nights are cold, root pressure causes sap to flow from any wound made in the bark of the tree. Many gardeners are confused about when to prune a maple tree. It’s important to learn how to prune maple trees and to pick the best time for pruning maples. However, maple tree pruning is an essential part of maple tree maintenance. The species’ tendency to lose sap from wounds makes gardeners question the wisdom of pruning maple trees. Maple trees are known for their brilliant fall color as well as the ease with which they “bleed” sap. The tree in the backyard that blazes with red, orange, and yellow foliage in autumn is most likely a maple.
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