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WINTER
BY
Some trees have a
hard time making it through a winter. This is true whether they are in
the open, in a new development, on an acreage, or protected in an old
neighborhood. Winter sunscald and frost crack can be a real problem.
PROTECTING EVERGREEN TREES FROM WINTER
I asked Steve about winter protection of arborvitaes and
evergreen trees like my
DWARF ALBERTA SPRUCE, UMBRELLA SPRUCE,
and
UMBRELLA PINE, and on shrubs that do not drop their leaves such as
HOLLY, RHODODENDRON,
and
BOXWOOD,
using Wilt-Stop or Wilt-Pruf.
“You may use Wilt-Stop or Wilt-Pruf on shrubs outside that keep
their leaves, evergreens, and arborvitaes, but it is important to wait
until the plants have completely hardened off, whereby the moisture in
the foliage retreats to the root system for the winter. We suggest you
wait until after the first part of December to be sure they are dormant
and completely hardened off.”
“You may spray Wilt-Stop or Wilt-Pruf anytime as long as the
spray does not freeze on the foliage while applying and for at least a
couple hours afterwards. If you put the mixture on too early in the
season before it has completely hardened off and there is moisture in
the foliage, you run the risk that a deep freeze can occur and that
moisture in the plant cells can freeze and burst the cells causing
damage to the plants. If
Wilt-Stop or Wilt-Pruf has been applied too early before hardening off,
we get the blame for an act of nature.”
For those who are not familiar with Wilt-Stop or Wilt-Pruf, these
products contain wax that coats the needles of evergreen and arborvitae
trees, and the leaves of shrubs that do not drop their leaves, so they
do not winter burn or dry out and die. The needles on evergreen trees
and the leaves on shrubs that do not drop their leaves, continue to
perspire all winter long. However, because of the frozen ground, they
can not take up moisture to replace the lost water, and thus dry out.
All the cut Christmas trees at one garden center here in Lincoln
are opened, fluffed up, and then sprayed with Wilt-Stop within 24 hours
of receipt. Because of this process the needles stay green longer when
the tree is taken inside to a warm and dry environment. In a home or
office environment they lose lots of water and can dry out very fast.
Wilt-Stop and Wilt-Pruf can be purchased at any garden center in a small
ready-to-spray (RTS) container or in a concentrate that is mixed with
water and applied with a small pump-up sprayer. If you purchase a cut
evergreen tree, ask if they have sprayed it. If they have not, take it
home and spray with one of the anti-desiccants before taking inside.
I also spray my small evergreen trees outside, my
RHODODENDRONS, and my
BOXWOOD
hedge on a warm day (40 degrees F. or above) just before Christmas, and
then again about Valentine’s Day. (As you can tell from my writings I
like Holidays as a reminder for what to do when.) When I am outside I
use a hose end sprayer if at all possible, because I have so many shrubs
and small trees to spray. I drain the hose and put it to bed again. If
not possible I use a small pump up sprayer and mix the solution using
warm water so it does not freeze before I finish.
If we have a very cold winter with lots of wind and snow, or we
have rain that washes the wax off, you may need to also spray in mid
January. Since these products are waxy, be sure and follow the
manufacturer’s recommendations on how much to use, and how to clean your
sprayer after use so the wax does not dry inside the sprayer, or in the
spray head and clog all the parts. After use, I rinse my sprayer with
soapy water a couple times and then rinse with warm water a couple
times. Copyright 2014 |