The Right Tree for the Right Place
Strategic placement of trees around homes and streets can provide
shade from summer sun, block cold winter winds, and abate heat islands,
thereby reducing power consumption from 20 to 50%.
Large species of trees should never be planted closer than twenty
feet from your foundation. Some trees with aggressive root systems
such as cottonwood, sycamore or mulberry should be placed even
farther from your home. Likewise, give your tree plenty of room
to grow. Space large canopy trees
so they will be just touching at maturity, usually twenty-five
to fifty feet apart. Small ornamental trees should be no closer
than ten feet from a building. Many ornamentals can grow within
the shade of a large tree but space them at least fifteen feet
from the trunk or any other tree.
Large deciduous trees placed on the
Southern and Western side of your home will shade it from the
Summer Sun. In the winter they drop their leafs allowing sunlight
to warm your home. Be sure not to plant the tree directly south
of a window so that its trunk does not block the warmth of the
winter sun.
You can further reduce your power bill by shading your air conditioner.
If your unit is on the Southern or Western face of your home,
plant trees or shrubs to shade it from the summer sun. Avoid planting
trees and shrubs near your air conditioner with cottony seed,
fine blossoms, or catkins (male flower without petals, found on
some species) that may clog the grill.
A row of tall evergreen trees or one
large spreading evergreen tree North of your house will help block
cold winter winds and reflect heat back onto your home.
Heat islands are caused from large reflective surfaces such as
rooftops, parking lots, or streets. They reflect the heat from
the summer sun back into the neighboring area. Heat islands are
an average of 10 degrees higher than surrounding areas, and increase
energy consumption of nearby buildings. Trees can be planted along
streets to reduce heat islands.
As with any tree planting, make
sure your street tree has plenty
of room to grow above ground and below. Large species of trees
need a minimum four-foot wide parkway (the area between the sidewalk
and the curb). A medium or large tree shall be planted a minimum
of 2 feet from the face of the curb, sidewalk or other structure.
A
minimum planting area of 3 feet must
be available between the back of curb and sidewalk to plant any
small tree or shrub. Plant the trunk
no closer than 1.5 feet from the sidewalk or other structures.
If your parkway has over head power lines select smaller
species of trees. In the City of Forth Worth planting trees
in the parkway requires a permit (at no charge). To request a
permit call 817-871-5738. It is prohibited to plant the following
species in the parkway, the area between the sidewalk and curb.
- Hackberry
- Sycamore
- Silver Maple
- Mulberry
- Siberian Elm
- Mimosa
- Arizona Ash
- Cottonwood
- Willow
- Bradford Pear
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