Gardening Guides
Landscape Design
Create a Fire-Safe Garden — With Style
Defend your home against wildfire with a well-planned mix of plants, materials and open space
It's that time again in Southern California. Fire season is in full force, with high temperatures and bone-dry fuel in our wildlands. As we watch firestorms rage across other parts of the country, we have our fingers crossed here in Santa Barbara, hoping to keep the wildfires out of our backyard. But, in case our fingers don't have the fire-preventing magic we wish for, it's time to take a critical look at how we can protect our resources.
Here in fire country, designing with fire in mind is a top priority. A well-thought-out landscape design can significantly reduce or even prevent property damage by wildfire. Refer to your state, county and/or local fire safety guidelines, and then look for creative design solutions that meet the recommended measures for defensible space. In Santa Barbara, for instance, we follow Cal Fire's 100 Feet Defensible Space guidelines to develop an overall strategy and select plant material from the Santa Barbara Fire Department's High Fire Hazard Area Desirable Plant List.
Your city, county and state likely have similar guidelines and plant lists. With a little legwork and some thought, you should be able to create a firesafe, water-efficient, functional and — let's not forget — beautiful landscape. Don't put it off any longer; it's time to start designing for disaster.
General guidelines from California fire safety resources — plus a few design alternatives for creating gorgeous defensible space in your landscape — are discussed below. Remember, they are just guidelines. Nothing can provide absolute protection from damage or loss by wildfire.
Here in fire country, designing with fire in mind is a top priority. A well-thought-out landscape design can significantly reduce or even prevent property damage by wildfire. Refer to your state, county and/or local fire safety guidelines, and then look for creative design solutions that meet the recommended measures for defensible space. In Santa Barbara, for instance, we follow Cal Fire's 100 Feet Defensible Space guidelines to develop an overall strategy and select plant material from the Santa Barbara Fire Department's High Fire Hazard Area Desirable Plant List.
Your city, county and state likely have similar guidelines and plant lists. With a little legwork and some thought, you should be able to create a firesafe, water-efficient, functional and — let's not forget — beautiful landscape. Don't put it off any longer; it's time to start designing for disaster.
General guidelines from California fire safety resources — plus a few design alternatives for creating gorgeous defensible space in your landscape — are discussed below. Remember, they are just guidelines. Nothing can provide absolute protection from damage or loss by wildfire.
"Lean" plant materials contain little fuel. Meadows around the home also function as a firebreak and give a beautiful natural aesthetic.
Succulents and cacti make for a striking fire-resistant plant palette. Succulents and cacti, such as aloe, aeonium, echeveria and cereus, store a great deal of water in their tissues, making them wonderful alternatives to high-fuel plants.
Saved by the firebreak. Many factors played a role in this structure's survival of the 2008 Tea Fire in Santa Barbara, including the patch of irrigated lawn that provided an effective firebreak. Because this area had little fuel and high moisture content, embers were unable to find anything to burn.
Dual-purpose firebreak. Bocce, anyone?
Water: the ultimate inflammable material. Pools and spas provide homeowners with stored water that can come in handy for fire suppression by firefighters.
Eliminate flammable materials near the house. As much as I love the rustic feel of a wooden deck, if you're in a high fire hazard zone, it's best to replace it with noncombustible materials such as stone, concrete or tile — unless it was built to withstand an hour of direct flame before catching fire (current code in most high fire areas).
Fire-resistant wood. If you have your heart set on wood decking near the house, look for factory-applied treatments or lumber that has a high fire rating. Ipe, the wood used in this garden, is naturally fire resistant and has an "A1" fire rating. It also naturally resists rot, decay, insects and mold, and is a sustainable material.
Use pots filled with succulents and statuary close to the house and structures to add interest without adding fuel for fire.
2. 30-70 Feet (or to Property Line) Around Structures: The Fuel Reduction Zone
How you handle this depends on slope and vegetation. You're aiming to both reduce the fuel and increase space between plants to improve the chance of stopping or slowing a fire. Limit the connections between plants by breaking up large planting areas with native stone, gravel, mulch, decomposed granite, etc. This makes it harder for the fire to jump.
It's also important to remove leaf litter. This not only tidies your landscape, it helps prevent the spread of fire as well. Try not to have more than three inches of fallen leaves or forest litter.
How you handle this depends on slope and vegetation. You're aiming to both reduce the fuel and increase space between plants to improve the chance of stopping or slowing a fire. Limit the connections between plants by breaking up large planting areas with native stone, gravel, mulch, decomposed granite, etc. This makes it harder for the fire to jump.
It's also important to remove leaf litter. This not only tidies your landscape, it helps prevent the spread of fire as well. Try not to have more than three inches of fallen leaves or forest litter.
Reduce fuel ladders. Remove overhanging branches that touch or sweep near the roof or ground. If not trimmed properly, they will act as a fire bridge, sending flames from ground to tree to roof. Your goal is to reduce the connections between fuel sources.
Steeper slopes require greater fuel reduction. The structure in the foreground was one of only four surviving homes out of 12 in this pocket in the Santa Barbara foothills. The slightly shallower slope, the lawn acting as a firebreak and the homeowners' fuel-management practices likely saved the house.
In the background, the charred steel framing members of the deck are all that remain of the neighboring home, which sat above a steeper slope cloaked in dense vegetation.
In the background, the charred steel framing members of the deck are all that remain of the neighboring home, which sat above a steeper slope cloaked in dense vegetation.
3. Maintenance
Once you've designed and built your firesafe landscape, maintenance is key to keeping it that way. Make sure you:
Once you've designed and built your firesafe landscape, maintenance is key to keeping it that way. Make sure you:
- Remove logs and stumps embedded in the soil within 100 feet of structures.
- Remove leaf clutter from roofs and gutters.
- Remove tall, dry grasses.
- Prune bushes and shrubs regularly to remove excess growth and dead leaves.
- Get rid of all the cuttings and debris ASAP.
Clear a 30-foot area around your home, reducing flammable vegetation. To avoid the "scorched earth" look, work with inflammable floorings (such as tile and stone), mulch (such as gravel) and plants with low fuel/high moisture content (such as lawn and succulents).
This home's courtyard provides a firebreak that uses noncombustible hardscape and less-flammable plants.