Pruning is perhaps the most intimidating of all
gardening tasks for many homeowners, and therefore,
probably one of the most neglected. But
there are a lot of good reasons why you should prune
trees and shrubs.
Obviously, if a tree limb is threatening to fall
on your house or is left dangling after a storm,
you'll want to remove the dead or damaged wood as
soon as possible. But judicious branch and limb
cutting also helps reduce the likelihood of disease
and insect infestations; shapes plants and controls
their growth; and repairs damage. In addition, pruning
improves both the yield of fruit trees and the aesthetic
value of ornamentals.
Knowing when to prune is just as important as knowing
why. Here are some general guidelines:
DECIDUOUS TREES (those losing leaves in
winter)--March or April (before leaf). Spring flowering
trees should be pruned after flowering.
DECIDUOUS SHRUBS--Prune spring-flowering
shrubs soon after bloom. Summer-flowering shrubs,
such as hydrangea, should be pruned in
early spring (buds have not formed yet).
EVERGREEN TREES--usually do not require
pruning except for shaping.
EVERGREEN SHRUBS--The best time to prune
most junipers, yews, hemlocks, and arborvitae is
late winter to early spring. Pruning may be
required in mid-summer to keep vigorously growing
plants at the desired size. Wait until after flowering
or, if the plant produces berries, after
berries fall.
FRUIT TREES--in late winter (March) while
tree is still dormant and before buds begin to swell.
To prune you will need sharp, well-maintained tools.
Buy the highest quality tools your budget allows.
They may cost a little more, but they keep an edge
longer than cheaper models.
Your basic cutting tool should be a pair of pruning
shears, suitable for cutting branches of up to three-fourths
inch in diameter. Newer tools are ergonometrically
designed to prevent undue stress on hands and wrists.
You also may want to invest in a pair of long-handled
lopping shears for cutting branches up to one or
two inches in diameter and a pruning saw for cutting
larger branches. An extension-handled pruning saw
will be useful for cutting branches high overhead.
The first step in the pruning process is to cut
out any broken, dead, or diseased wood. Dead wood
left on the plant eventually rots, introducing
decay organisms into living tissue.
Here are a few more pruning basics to remember:
--Cut out branches that rub against other branches
or limbs.
--Cut branches at the point where they join another
branch or the trunk. When there's a choice, cut
branches that join at a narrow angle rather
than those that join with a wide angle. Wide-angled
branches are stronger.
--Do not cut limbs flush with the trunk. Leave
the swollen joint or branch collar intact. "Painting"
pruning wounds with latex paint, grafting
compound, or wound sealant is not necessary and
does not aid proper healing.
--Prune a little at a time. Heavy pruning stresses
the tree.
--When pruning fruit trees, keep in mind that young
trees require severe pruning to create proper branch
structure for the tree to bear fruit as it gets
older. In later years, prune lightly--unless you
are revitalizing an abandoned tree--to maintain
the fruiting and shape of a tree.
--Always disinfect pruning equipment with alcohol
before using it to prune another tree or shrub.
Disinfecting tools helps reduce the spread of disease.
Copyright Dr. Leonard Perry, Extension
Professor
Printed with permission from the Author