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HAIL DAMAGE - SYMPTOMS, SIGNS AND MANAGEMENT
OPTIONS
Wisconsin DNR -
Forest Health Protection, May, 2000
During
May,2000, hail storms caused significant property and forest damage in
central and northeastern Wisconsin.
These storms, often accompanied by high winds, caused a variety
of injuries to young and established trees and shrubs. This publication
describes these damages and provides management options.
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White
Pine
Black Cherry |
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Aspen |
OLDER HARDWOODS-
Minor Injury
Older
conifers and hardwoods typically have thicker bark thus some of the
trees suffered only minor damage. The aspen on the left has multiple
wounds. If the tree does not suffer any further stresses (drought,
defoliation), the tree can be expected to close these wounds and
continue to grow. The oak
suffered minimal injury. No
management action is recommended.
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Oak
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Cutting White Pine, note the brown wounds
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Broken Off |
SETTING
PRIORITIES
Safety should be a top priority.
Cracked, leaning and otherwise compromised trees should be dealt
with by professionals trained in hazard tree removal.
If you are considering a harvest maximize the value by harvesting
hardwoods that will stain quickest.
First Priority: Trees that were
broken on the main stem, exposing wood to air and moisture.
Trees with >2 large (>50 square inches) wounds in the
lower 16' of the tree. Trees with >50% of their branches
destroyed.
Second Priority: Trees
with <50% of their branches broken or destroyed. Trees that have uprooted relatively intact, pulling the whole
root plate with them. Trees
with a few small wounds (<50 inches square). Take the time to
consider all your options and consult with a professional forester for
advice regarding any questions on timber sales.
GETTING
ADDITIONAL HELP
For
assistance with timber sales in Manitowoc Co. (if you own more than 5 acres
of damaged timber) contact
Scott Fischer, DNR forester, 920-755-4984.
For assistance with questions on forest health: Linda Williams willil@dnr.state.wi.us,
920-492-5872 or Jane Cummings Carlson, (cummij@dnr.state.wi.us),
608-275-3273.
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Uprooted |
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