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FREQUENTLY
ASKED QUESTIONS
WHAT
ARE THE BENEFITS OF TREES?
WHAT
ARE MY TREES WORTH?
WHICH
TREES SHOULD I SELECT?
WHY
SHOULD I BUY A HIGH QUALITY TREE?
WHAT'S
THE BEST WAY TO PLANT A TREE?
HOW
DO I AVOID UTILITY CONFLICTS?
WHY
SHOULD I HIRE AN ARBORIST?
WHAT
ABOUT TREES AND TURF? 
WHAT
ARE PROPER MULCHING TECHNIQUES?
WHAT
ARE PROPER PRUNING TECHNIQUES?
WHAT
ABOUT INSECTS AND DISEASE?
HOW
DO I AVOID CONSTRUCTION DAMAGE?
DOES
"TOPPING" HURT TREES?
WHAT
IS PHC?
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WHY SHOULD I BUY A HIGH QUALITY TREE?
When you buy a high-quality tree, plant it correctly, and
treat it
properly, you and your tree will benefit greatly in many
ways for
many years.
When you buy a low-quality tree, you and your tree will have many
costly problems even if you take great care in planting and
maintenance.
What
Determines Tree Quality?
A high-quality tree has
• enough sound roots to support
healthy growth.
• a trunk free of mechanical wounds and
wounds from incorrect pruning.
drained, or is it shallow,
compacted, and infertile?
• a strong form with well-spaced,
firmly attached branches.
A low-quality tree has 
• crushed or circling roots in a
small root ball or small container.
• a trunk with wounds from mechanical
impacts or incorrect pruning.
• a weak form in which multiple
stems squeeze against each other or
branches squeeze against the trunk.
Any of these problems alone or in combination
with the others will greatly
reduce the tree’s chances for
a long, attractive, healthy, and productive life.
When buying a tree, inspect it carefully
to make certain it does not have
problems with roots, injuries,
or form. Remember the acronym RIF; it will
help you remember roots,
injuries, and form.
Here are some details on potential problems and some other
considerations
that you should be aware of when buying a tree.
Root Problems
Roots on trees for sale are available
as one of three types:
• bare root: no soil; usually on
small trees
• root balled: roots in soil held
in place by burlap or some other fabric; the
root ball may be in a wire
basket
• container grown: roots and soil
in a container
BARE-ROOT STOCK
Bare roots should not be crushed or torn.
The ends of the roots should be
clean cut. If a few roots are crushed,
re-cut them to remove the injured
portions. Use sharp tools. Make straight
cuts. Do not paint the ends. The
cuts should be made immediately before
planting and watering.
ROOT-BALLED STOCK
You should be able to see the basal trunk
flare. The flare is the spreading
trunk base that connects with
the roots. Root balls should be flat on top.
Roots in soil in
round bags often have many major woody roots cut or torn
during
the bagging process. Avoid trees with many crushed or torn roots.
The diameter of the root ball should
be at least 10 to 12 times the diameter
of the trunk as measured
6 inches above the trunk flare.
After placing the root ball in the planting
site, cut the ties and carefully pull
away the burlap or other fabric. Examine
any roots that protrude from the
soil. If many roots are obviously crushed
or torn, the tree may have severe
growth problems. If only a few roots are
injured, cut away only the injured
portions. Use a sharp tool. Use care not
to break the soil ball around the
roots.
Cut the wire on wire baskets. Place the
basket into the planting site. Cut
away at least the top two wires without
disturbing the root ball. Inspect
exposed roots for injuries. If many roots
are injured, the tree may have
serious growth problems. If the trunk flare
has been buried, gently expose
it before planting the tree, taking care
not to damage the bark.
CONTAINER-GROWN STOCK
Roots should not twist or circle in the container.
Remove the root ball from
the container. Inspect the exposed larger
roots carefully to see whether
they are twisting or turning in circles.
Circling roots often girdle and kill
other roots. If only a few roots are circling,
cut them away with a sharp tool.
Trunk flare should be obvious. Be on alert for
trees planted too deeply in
containers or trees “buried”
in fabric bags. As with root-balled stock, you
should be able to see the basal trunk flare
with container-grown plants. If
the trunk flare has been buried, gently
expose it before planting the tree,
taking care not to damage the bark.
Injuries
Beware of injuries beneath trunk wraps.
Never buy a tree without
thoroughly checking the trunk. If the tree
is wrapped, remove the wrap and
inspect the trunk for wounds, incorrect
pruning cuts, and insect injuries.
Wrap can be used to protect the
trunk during transit but should be removed
after planting.
Incorrect pruning cuts are major problems.
Incorrect pruning cuts that
remove or injure the swollen collar
at the base of branches can start many
serious tree problems, cankers,
decay, and cracks.
Incorrect pruning cuts that leave branch
and leader stubs also start disease
and defect problems. Do not
leave stubs.
A correct pruning cut removes the branch
just outside of the collar. A ring,
or “doughnut,” of
sound tissues then grows around the cut. Do not make
cuts flush
to the trunk. The closing tissues may form only to the sides of
the flush cuts. Trunk tissues above and below flush cut branches
often die.
When the heat of the sun or the cold of frost occurs,
cracks or long, dead
streaks may develop above and below the dead
spots.
Form
Good, strong form, or architecture, starts
with branches evenly spaced
along the trunk. The branches should
have firm, strong attachments with
the trunk.
Squeezed branches signal problems. Weak
branch unions occur where the
branch and trunk squeeze together.
As the squeezing increases during
diameter growth, dead spots or
cracks often begin to form below where the
branch is attached to
the trunk. Once this problem starts, the weak branch
attachment
could lead to branches cracking or breaking during mild to
moderate
storms.
When several branches are on the same position
on the trunk, the
likelihood of weak attachments and cracks increases
greatly. As the
branches grow larger and tighter together, the chances
for splitting increase.
Avoid trees with two or more stems squeezing
together. As stems squeeze
together, cracks often form down the
trunk. The cracks could start from
squeezed multiple leader stems
or where the two trunks come together.
If you desire a tree with multiple trunks,
make certain that the trunks are
well separated at the ground line.
Remember, trunks expand in diameter as
they grow. Two trunks may be
slightly separated when small, but
as they grow in girth, the trunks will
squeeze together.
Look for early signs of vertical trunk
cracks. Examine branch unions
carefully for small cracks below the
unions. Cracks are major starting
points for fractures of branches
and trunks. The small cracks could be
present for many years before
a fracture happens. Always keep a close
watch for vertical cracks
below squeezed branches and squeezed trunks.
If your tree has only a few minor problems,
corrective pruning may help.
Start corrective pruning one year after
planting. Space the pruning over
several years.
Remove broken or torn branches at the time
of planting. After a year, start
corrective pruning by removing
the branches that died after planting.
Trees Have Dignity, Too
Most nurseries produce high-quality trees.
When you start with a high-
quality tree, you are giving that tree
a chance to express its dignity for
many years. Remember RIF. |
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