Tree Storm Damage by benbenzhou


									Delbert Johnson
Doctor of Stumpology

                          How To Minimize Storm Damage To Trees

        Storm damage to trees is caused by
        heavy, wet snow, freezing rain, lightning,
        or high winds. All of these put
        tremendous mechanical stresses on
        leaves, branches, trunks, and root
        systems of trees on your property.
        Potential hazards to your safety, your
        property, and your trees that are
        associated with storms can be reduced
        through proper tree maintenance. Proper
        pruning, cabling and bracing, a lightning
        protection system, proper tree selection,
        and cavity filling are all methods used by
        arborists to improve the chances of your
        trees to survive these storms.

                                                                Result of typical storm damage.

       Proper Pruning: Thinning the tree
       canopy allows wind to blow
       through the crown, instead of
       against it as though it were a sail.
       Pruned trees offer less resistance to high
       winds and are less likely to suffer
       breakage or to blow down. The removal
       of potentially hazardous dead or weak
       branches is an important safety practice.

       Cabling and Bracing: Strong metal
       cables and rods are used to relieve the
       strain that causes structurally weak trees
       to split and break in high winds, ice, and         Tree needing pruning. Following proper pruning.
       Whether used in prevention or repair of structural damage to trees, cabling and bracing provides a
       support system to reduce the potential for fork splitting and branch breakage. Cabling and bracing
       your trees, along with thinning the crown, will reduce the chances of costly damage.
Lightning Protection: Lightning strikes trees because they provide better conduction of the electrical
charge than the surrounding air. When a tree is hit by lightning it may be severely blown apart or
may only produce a spiraling dead area on the trunk. The installation of a lightning protection
system in your valuable trees will prevent this destruction by harmlessly conducting the electrical
charge to the ground and bypassing the tree itself.

Tree Selection: Certain tree species characteristically have weak wood and should not be considered
for landscape situations. Although every tree has its place, quality landscapes should generally avoid
weak-wooded trees like silver maple, Siberian elm, willows, catalpas, and poplars.

Cavity Filling: An open cavity in a tree's trunk is a weak point in its structural support system.
Think of such a tree as a tube with a hole in its wall. This kind of tube can't support as much weight as
an intact tube.
A cavity filling does not provide structural support, but rather a flat surface for callus tissue to grow
over. Eventually, the continuity of the tree trunk is re-established and the trunk is better able to
support the weight of its canopy. Fertilization helps promote the callusing process. A tree with strong,
healthy wood is more likely to survive a destructive storm.

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