Create a defensible space.
Fire professionals often talk about maintaining a defensible space within 100 to 200 feet of your home. Within this area modify the landscaping to give your house the best chance to survive on its own. This will greatly improve the odds of success for firefighters who are defending your neighborhood. If your home is on a slope or subject to high winds, extend the area of this zone to whatever your fire department recommends. Separate shrubs (with spaces of at least 10 feet between clumps), limb up trees, and use hardscaping such as rock, stone pathways, and concrete to break up potential fire fuels.
Within 5 to 30 feet of the home use only individual trees or shrubs, keeping them well maintained and pruned up. Remove dead, dry leaves, needles, or branches, and do not place flammable mulch near the foundation.
Beyond using inflammable hardscape, groundcovers such as succulents and even a narrow band of turf grass can provide valuable protection. Keep grass near your home (both turf and natural meadows) watered, if possible, and mowed during fire season to no more than 4 inches. Use of fire-resistant plants is the best choice and grass to grow from 0 to 30 feet from your foundation.
Pruning plants to reduce dead and dying limbs and leaves is critical. While no plants are completely fire resistant, chances of surviving and slowing the spread of fire are better when there is less flammable material on the ground and within plants and trees. You may wonder “Why remove dead leaves when we know they create habitat for beneficial insects and wildlife?” Removing flammables during fire season, within the ignition zone of your home will increase your chances for survival and keeping your home.
Removing ladder fuels (vegetation under trees) prevents fires from reaching the crowns of trees. Prune trees at least 6 to 10 feet from the ground; for shorter trees, do not trim more than 1/3 of the overall tree height. Trees overhanging roofs and structures can be problematic and should be trimmed back, in fact, there should be no trees and or shrubs within the first 0-5 feet of the foundation and few scattered trees or shrubs within 5 feet to 30 feet of the structure.