Tag Archives: firesafe landscaping

firesafe landscaping, firescaping

Firesafe Landscaping – Part II

Last week I talked about how to make the area closer to your home more firesafe. Here are some more tips.

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Shaded fuel brake information sign

In areas 30-70 ft. away from your house plants should be trimmed and thinned to create well-spaced groups and help prevent a fire from spreading to your home. Be cautious with slopes. If you have a large lot, the fringe area should be inspected and maintained regularly to eliminate any build up of dry brush and litter. This reduces the chance of surface as well as crown fires.

Plant arrangements, spacing and maintenance are often as important as plant types when considering fire safety. Group plants of similar heights and water requirements to create a landscape mosaic that can slow the spread of fire and use water most efficiently. Use plants that do not accumulate dead leaves or twigs. Keep your landscape healthy and clean. On a regular basis remove dead branches and brush, dry grass, dead leaves and pine needles from your yard, especially within 30 feet from your home and at least 150 ft if you’re on a hill. Keep trees spaced at least 10 feet apart with branches trimmed at least 10 ft away from your roof. It’s best, however, to keep trees further from your house. Low shrubs can be closer in and herbaceous perennials and groundcovers can be nearest the home.

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A shaded fuel break

Extremely flammable plants have a high content of oil or resin and should be separated from each other, removed of dead branches and lower limbs and kept free of dry debris anywhere around your property. Extremely flammable pyrophytes like hollywood juniper, pines, fountain grass and Japanese honeysuckle will need a higher level of maintenance. Other common plants that are highly flammable are sagebrush, buckwheat and deer grass. Rosemary and purple hopseed also fall into this category. These contain oils, resins and waxes that make them burn with a greater intensity. If you have these plants on your property yearly pruning and maintenance is important.

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Tree trimmed, shrubs thinned to prevent fire ladder

Irrigation is vital in a fire safe landscape to maintain plant moisture especially within 30 ft around your home. Choose the right irritation system. While all plants can eventually burn, healthy plants burn less quickly. Consider drip irrigation and micro sprays for watering most of your landscape. Use sprinklers for lawns and other groundcovers or turf. Even drought adapted species and natives will benefit from watering every month or so during the dry season. Unwatered landscapes generally increase the risk of fire.

Mulching around your plants will preserve moisture in the soil and in your plants. Plantings beyond 30 ft. should be irrigated occasionally but to a lesser extent. As you get 70-100 ft from the home native plantings that require little or no irrigation should be used.

Using fire resistant plants that are strategically planted give firefighters a chance fighting a fire around your home especially within the 100 foot defensible zone. Each home or property is different and you will need to look at the unique qualities of yours in planning your firescaping. Some of the info for this column was obtained from two valuable booklets, ‘Living with Fire in Santa Cruz County’, prepared by Cal Fire and available free from any fire department or online and another booklet published by the Calif. Department of Forestry.

Bonny Doon, Bonny Doon Ecological Reserve, fire safe landscaping, Martin Fire of 2008

Firesafe Landscaping – Part I

With the recent heat wave and the fires burning now in Southern California I?m reminded of our vulnerability to wildfires. The Martin Fire of 2008 and the Lockheed fire of 2009 together burned over 8,000 acres. I often hike in Bonny Doon Ecological Reserve and live close-by where these fires occurred. There?s a large, burned manzanita along the trail that serves as a grim reminder of the devastation that wildfire left in it?s wake. The skeleton-like manzanita, ponderosa pine and many other plants are regrowing from seed left in the soil. The fire was so hot it killed even the plant crowns preventing many of them from re-sprouting. I?ve been monitoring the regrowth for years and it?s progressing nicely but you don?t want this to happen to your property. Is there a landscape that is safer in a wildfire than another? Which plants burn more readily?

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Manzanita burned in Martin Fire. Bonny Doon 2008 – photo taken in 2012 in Bonny Doon Ecological Reserve

Many people think they have to clear everything within 30 feet of their house to truly have a defensible space. This is unnecessary and actually unacceptable due to soil erosion and habitat destruction reasons. We want to retain the character of this beautiful area we live in, provide the food and shelter that our native wildlife are accustomed to but also reduce fire risk. For example, grasslands mowed to leave 4-6″ of height allow insects, reptiles, amphibians, and small mammals shelter, food and a place to reproduce. Leaving 4-6″ standing also provides some erosion protection and shades out some of the weeds that follow disturbance.

Fire safe landscaping is a term used to describe defensible space. It can look like a traditional landscape. The idea is to surround the home with things less likely to burn and place them to provide separation between canopies and avoid creating fire ladders. Highly flammable plants should be placed, whenever possible, with low-growing and/or low fuel plants.

Many homes may not have 30 ft. between their house and the property line but following these guidelines will help. Plants in this area need to be the slowest to ignite and should produce the least amount of heat if they do burn. There are plants with some fire resistance which include drought tolerant California natives and Mediterranean climate selections. The key to fire resistance, though, is maintenance and keeping the moisture in the foliage high.

burned tree 2015
Same manzanita showing surrounding regrowth in 2015

For example, Baccharis pilularis or dwarf coyote brush is generally considered highly flammable if its lush green top growth covers a hazardous tangle of dry branches and leaves several feet high. Trim this plant down low in early spring, remove the dry undergrowth, follow with a light feeding and watering and the new top growth is now resistant to fire.

Other considerations may be as important such as appearance, ability to hold the soil in place and wildlife habitat value. Some fire-resistant California friendly plants are western redbud, monkey flower, ceanothus, sage, yarrow, lavender, toyon, California fuchsia and wild strawberry. Also consider coffeeberry, flowering currant, bush anemone, snowberry, California wax myrtle and evergreen currant. Fire resistant plants from areas include rockrose, strawberry tree, Chinese pistache, barberry, escallonia, oleander, pittosporum, bush morning glory and wisteria to name just a few.

Keep your landscaping firesafe to protect your home.