What is a defensible space?
Defensible space is the area between a house and an oncoming
wildfire where the vegetation has been modified to reduce
the wildfire threat and to provide an opportunity for firefighters
to effectively defend the house.
The Three R's of Defensible Space
Removal: This technique involves the elimination of
entire plants, particularly trees and shrubs, from the site.
Examples of removal are cutting down a dead tree or cutting
out a flammable shrub.
Reduction: The removal of plant parts, such as branches
or leaves, constitute reduction. Examples of reduction are
pruning dead wood from a shrub, removing low tree branches,
and mowing dried grass.
Replacement: Replacement is substituting less flammable
plants for more hazardous vegetation. Removal of a dense stand
of flammable shrubs and planting an irrigated, well maintained
flower bed is an example of replacement.
FIRE ZONES FOR WOODLAND HOMES
ZONE 1: 5 FEET FROM THE HOUSE
This area, closest to the house, is the most critical for
fire protection. Have nothing flammable next to the house,
including tall grass, evergreen trees and shrubs, trees that
overhang the house or deck, leaves, brush, firewood piles,
bark, mulch and other burnables. Clean gutters, roof and deck
of flammable debris. This zone does not have to be barren.
Maintain a well-kept lawn, or use crushed brick or river stone
gravel instead of mulch. Use raised beds, large decorative
rocks, stone walkways, patios, or other features to create
visual interest while maintaining a fuel break for forest
fire safety.
ZONE 2: 10 FEET FROM THE HOUSE
Maintain a well-kept lawn and avoid evergreens that catch
fire easily and burn quickly. Occasional trees and shrubs
should be at least 10 feet from the house. Space trees with
10-15 feet between tree crowns and prune trees 10-15 feet
up from the ground.
A pond or swimming pool can act as both a firebreak and an
emergency water supply for firefighters. Freshly tended flower
beds, herb or vegetable gardens, rock gardens, stone walls
and driveways can also act as firebreaks. Avoid "fire
ladders" that allow fire to climb from the ground into
tree branches. Do this by pruning trees, spacing tall trees
away from medium-sized trees and by using ground covers or
small plants under tall trees.
ZONE 3: 30-100 FEET FROM THE HOUSE
Rake or use a leaf blower to remove leaves and twigs at least
30 feet from the house and up to 100 feet on the downhill
side. If you live in a pine forest, maintain a safety zone
at least 75 feet on all sides of the house. Firewood and other
burnables should be stored at least 30 feet from the house
to help keep fire from spreading to or from your house. It
also provides a space for firefighters to defend your house
from fire.
Prune and thin trees so there are no dense stands or tree
tops touching. Keep shrubs small, maintained, and free of
dead materials. Control brush and weeds annually. Steep areas
can be terraced to slow down wildfires. A stone wall can also
act as a fire barrier on very steep slopes.
THE HOUSE: BUILD WITH FIRE IN MIND
Build your house on a level location. Houses overhanging steep
slopes are very vulnerable to forest fires. Enclose any open
space underneath decks with screen to prevent embers from
entering. Use fire resistant building material for both the
siding and the roof. Avoid wood shake roofs for woodland homes.
Make sure firefighters can find and reach your home.
The Firescape
A home in a woodland setting is usually surrounded by forest
fire fuel and is in real danger if a wildfire is on the loose.
Firewise Landscaping can create a line of defense against
the threat of wildfire by creating a safety zone or defensible
space around your home.
The goal is to break the chain of flammable fuel between
your home and the forest. Examine your yard. What can catch
fire and carry this fire to the house?
Be Guided By Nature's Patterns
You can landscape for fire protection while maintaining a
natural look to your surroundings. Work with the plants native
to the site, using the pattern found in nature. Also, consider
hardiness zones when choosing new plants. The placement of
plants and trees is just as important as the species when
planning fire safety.
All Plants Burn!
There are no fire proof plants, but some plants are more fire-retardant
than others. Use these considerations when choosing plants
and trees for your yard.
Choose plants and trees with:
- A high moisture content in the leaves
- A low oil or resin content (avoid cedars and pines).
- Limited foliage, and few dead branches.
- A lower overall height.
- An open, loose branching appearance.
- Easy maintenance and pruning.
- Drought resistance.
Suggested Large-Sized Trees
- Oaks
- Maples
- White Ash
- Hickories
- American Linden
- Black Gum
- Yellow Poplar
- Hackberry
- Ginkgo
Suggested Medium-Sized Trees
- Golden Raintree
- Crape Myrtle
- Yaupon Holly or Deciduous Holly
- Flowering Dogwood
- Magnolias
- Redbud
Suggested Shrubs
- Holly
- Japanese White Birch
- Azalea
- Nandina
- Gardenia
- Forsythia
- Red Leaf Barberry
Suggested Ground Cover
- Wilson Ivy
- Liriope
- Ajuga
- Euonymus
DO NOT Plant these within 30 Feet of the house
- Loblolly Pine
- Shortleaf Pine
- Eastern Red Cedar
For more information go to:
http://www.arkansasfirewise.com
http://www.firewise.org
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