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Yard guide

Your climate zone in the valley

Las Vegas isn't one growing zone. The valley floor and the western foothills are far enough apart, in temperature terms, that a plant thriving in one can freeze in the other.

Zones across the Las Vegas valley

These are USDA plant hardiness zones from the 2023 map, which is based on thirty years of winter low temperatures.

AreaZoneAverage coldest winter night
Urban core, downtown, the Strip9b25–30°F
North Las Vegas, Centennial Hills, Spring Valley9a20–25°F
Summerlin, Blue Diamond, western edge8b15–20°F
Red Rock and higher ground west of town8a10–15°F

The practical difference: a citrus tree or a tender succulent that shrugs off winter near downtown can be killed by the same night in Summerlin. If a plant tag says "hardy to zone 9," it's a gamble on the west side.

Check your own address. Zones follow elevation, not city limits. The USDA's map takes a ZIP code and gives you your zone in one step: planthardiness.ars.usda.gov

Why the zone is only half the story

Hardiness zones describe one thing: how cold it gets in winter. That's the least of your problems here. What actually kills plants in Las Vegas:

  • Summer heat and sun. Weeks over 110°F with intense UV. Plenty of plants rated for our winters cook in July.
  • Reflected heat. A west-facing stucco wall, a block wall, or a field of rock mulch re-radiates heat well into the evening. The spot next to that wall can run 10–15°F hotter than the open yard.
  • Alkaline soil. Our pH commonly sits near 8, which locks up iron. That's why so many non-desert trees here go yellow between the leaf veins.
  • Caliche. A cemented calcium-carbonate layer, sometimes inches thick, sitting under the topsoil. Roots can't get through it and water can't drain past it — a planting hole in caliche becomes a bathtub.
  • Water rules. What you're allowed to water, and when, is set by the water district. See our watering schedule guide.

The microclimates in your own yard

One property can hold three or four different growing conditions. Before deciding a plant "doesn't work here," look at where it went:

  • North and east exposures are the gentlest — morning sun, afternoon shade. This is where borderline plants survive.
  • South and west exposures are the harshest, especially against a wall. Reserve them for true desert species.
  • Under a mature tree is its own zone: filtered light, cooler soil, and competition for water.
  • Low spots collect cold air. On a still winter night, a dip in the yard can be several degrees colder than ground twenty feet away.
  • Rock mulch versus organic mulch changes soil temperature meaningfully. Rock looks tidy and meets water rules, but it bakes roots; organic mulch moderates them.

What this means when you're choosing plants

Match the plant to the spot, not to the city. A desert-adapted plant in the hardest corner of the yard and a tenderer one on the north side will both do better than either planted at random. When we design a yard, exposure is the first thing we walk — before anyone picks a single plant.

Want plants that will still be alive in three years?

We'll walk your property, look at exposure and soil, and put together a plan that suits the spot instead of fighting it.

Get a free estimate

Sources — checked July 2026:

Zone boundaries are approximations drawn from regional data. Treat the table above as a starting point and confirm your own address.