Category Archives: About xeriscaping

Xeric Garden Zones

If you’re planning a xeric garden for spring, and especially if you’re planning to take out a grass lawn and replace it with gravel and xeric plants, try planning your garden in recommended water zones.

First, let me jump on my gravel soap box. I’ve said it before and I’ll say it every chance I get: Ripping out grass and replacing it all with gravel represents many homeowners’ idea of xeric gardening. They soon find out that it’s not the best solution when a tree left in the middle of a gravel lawn dies and their home cooling bill skyrockets.

gravel yard

A typical gravel lawn misnamed as xeriscaping. Note the grass creeping up between the gravel, but that’s a future topic.

So let’s consider zones instead.

Arid Zone

You’ll want your most arid zone farthest from your house. Choose native plants that need the least amount of water, hopefully no supplemental watering at all. Here in New Mexico, that might include cacti, yuccas and many varieties of native flowering plants like Kniphofia uvaria (Red hot poker) or Berlandiera lyrata (Chocolate flower). It all depends on your landscape and personal preference.

Cacti-gravel

Cacti can add texture, height, blooms and plenty of interest to an arid zone.

Transition or Middle Zone

Your next zone can blend some lush, medium water areas with drier ones. Here’ you’ll use plants that take low and medium water. They only need water beyond nature’s supply about once a week or less. It’s a great spot for medium-water shrubs and trees, such as Spartium Junceum (Spanish broom) and various native oaks to provide summer shade, but let winter sun shine through.

This lawn is not a perfect depiction of the transition and mini-oasis, but it shows the arid zone with low-water plants, and a Bermuda lawn. Note the unhealthy cypress, planted years ago.

This lawn is not a perfect depiction of the transition and mini-oasis, but it shows the arid zone with low-water plants, and a Bermuda lawn.

Mini-oasis Zone

If you want to keep some grass, here’s your chance. Drought-tolerant grasses like Bermuda, Blue Grama, or Buffalograss need little watering but keep your lawn green and other plant roots cool. When used in moderation, and not to cover huge areas, they’re still low- to medium-water choices for this zone. Add some annual flowers in beds or containers up close to the house. By placing lusher plants and turf that need a little more water closer to your home, you help cool your house and take advantage of water runoff from the roof and downspouts.

xeric landscaping zones

A simple example of xeric water zones.

Of course, the drawing simplifies the concept. Landscapers who understand xeriscaping concepts know how to make your zones appealing and customized for your tastes and gardening ability. And by using microclimates, mulching, welling and other waterwise concepts we’ve discussed in other posts, you can push the limits in some of the zones. The basic concepts are to keep from overusing water and avoiding undermining the health of existing trees, along with the comfort and appearance of your home.

I Say Xeri and You Say Zero

OK, maybe you say and spell xeriscaping correctly, but you might be in the minority if you pronounce, much less understand, the term as it’s intended. I’ve heard people from all walks of life, including professional garden communicators, say the word with the big ZERO in it. The best example was the landscaping company that placed a flyer on my door last summer offering “zeroscape” services. You just can’t beg mispronunciation at that point.

What’s most disconcerting is that the landscaper likely got a few takers, because my Albuquerque neighborhood was ripe with homeowners switching from lawns to gravel-covered “zero” scapes. People misunderstand the fundamental concept of xeriscaping. “Xeros” is the Greek word for dry, not for barren, brown, desolate, nothingness, or zero.

I’ll talk more about what xeriscaping means in a future post, along with its absolutely positive side. For now, it feels so good to get that off my chest.