Best Plants for Utah Zeroscaping in 2025
Which drought-tolerant plants actually thrive in Salt Lake County's clay soil, high altitude, and cold winters.
The most common mistake in Utah zeroscaping plant selection is choosing drought-tolerant plants from warmer Southwest climates that can't survive Salt Lake Valley winters. Many plants marketed as "xeriscape plants" are rated for zones 8 or 9 — fine for Phoenix or Las Vegas, but they die in a hard Sandy, Utah January. Here's a practical guide to what actually works in Salt Lake County's USDA zones 7a–7b.
Understanding Salt Lake County's Plant Challenge
Salt Lake Valley presents a specific combination of conditions that narrows the plant palette compared to warmer xeriscape markets: summer temperatures regularly reach 95–105°F from June through September; winter temperatures drop to 0–15°F most years and occasionally hit -5°F in cold air drainage valleys like Sandy and Draper; annual precipitation is 14–18 inches, most of it falling in spring and winter with an extended dry period from late June through September; and the dominant soil is heavy clay with poor drainage that compacts easily and requires thoughtful amendment before planting.
The plants that thrive here are specifically adapted to this range — not just to low water needs, but to the combination of cold winters and hot dry summers that characterizes the high-altitude intermountain West.
Top Ornamental Grasses for Utah
Blue Oat Grass (Helictotrichon sempervirens) — This is our single most-recommended ornamental grass for Salt Lake County zeroscaping. It's a cool-season bunchgrass that forms a striking silver-blue mound 2–3 feet tall and wide, stays evergreen in most Utah winters, is genuinely drought-tolerant once established (after the first summer), and thrives in full sun in clay-heavy soil. It doesn't spread aggressively or require division. In a rock bed with decomposed granite, it looks excellent year-round.
Feather Reed Grass (Calamagrostis acutiflora 'Karl Foerster') — The most popular ornamental grass in American landscape design for good reason. It grows 4–5 feet tall in a tight upright column, producing feathery buff-colored seed heads from July through winter. Hardy to zone 4, so Utah winters pose no threat. Drought-tolerant once established but benefits from occasional deep watering through the first two summers. Excellent as a vertical accent in rock beds.
Blue Grama Grass (Bouteloua gracilis) — A true Utah and Colorado native that has co-evolved with the Great Basin climate over thousands of years. Forms dense low tufts 12–18 inches tall. The distinctive comb-shaped seed heads appear in late summer. Once established — and it takes only one season — blue grama needs zero supplemental irrigation in average Salt Lake precipitation years. Best used in sweeps or as a low meadow-style groundcover.
Top Flowering Perennials for Utah
Russian Sage (Perovskia atriplicifolia) — The workhorse of Utah xeriscaping. Lavender-blue flower spikes from mid-July through September on silver-stemmed plants 3–4 feet tall. Fully hardy in zone 5, utterly indifferent to Utah's dry summers once established, attractive to pollinators, and deer-resistant. Prefers well-drained soil — plant slightly elevated in rock beds to improve drainage in clay areas. Cut to 6 inches above ground in late March for best bloom performance.
Penstemon (multiple native species) — Utah has several native penstemon species that are among the most water-efficient flowering perennials available for local gardens. Wasatch penstemon, Palmer's penstemon, and Rocky Mountain penstemon are all excellent. Red, pink, lavender, or white tubular flowers attract hummingbirds from May through July. Native plants are adapted to Utah's specific soil microbiome and require less care to establish than non-native alternatives.
Salvia 'May Night' (Salvia nemorosa) — Intensely violet-blue flower spikes from May through June, often reblooming in September if cut back after the first flush. Grows 18–24 inches tall in tight clumps. Zone 4 hardy. More effective water user than many larger salvias and better suited to Utah's cold winter temperatures. Groups of three to five plants create strong color blocks in rock beds.
Catmint (Nepeta faassenii) — Lavender-blue flowers from late May through July on low mounding plants 12–18 inches tall. One of the most reliable low-water perennials for Salt Lake County — tolerates both clay soil and drought once established. Spreads slowly to fill gaps between rocks or boulders. Shear by one-third after the first bloom flush to encourage reblooming through September.
Top Ground Covers for Utah Rock Beds
Creeping Thyme (Thymus serpyllum) — Fills gaps between rocks and flagstone, tolerates light foot traffic, blooms pink in late spring. Stays evergreen in most Utah winters. Spreading habit slowly fills bare soil between plants, suppressing weeds naturally. Zone 4 hardy. One of the few groundcovers that genuinely improves with age — filling in more completely each year without becoming invasive.
Ice Plant / Hardy Ice Plant (Delosperma cooperi) — The succulent with the magenta or yellow flowers that appear throughout summer. Hardy to zone 5 — and several cultivars are now rated to zone 4 — making ice plant one of the few low-water succulents that reliably survives Salt Lake winters without winter protection. Spreads efficiently to fill rock beds. Avoid planting in low areas that hold water in winter; ice plant is drought-tolerant but not waterlogged-tolerant.
Shrubs and Structure Plants for Utah
Apache Plume (Fallugia paradoxa) — A Utah and New Mexico native that grows 4–6 feet tall in an open, airy habit. White flowers in spring are followed by distinctive feathery pink seed heads that persist through fall. Drought-tolerant to the extreme — it survives on rainfall alone once established in most Salt Lake County locations. Zone 5 hardy. Excellent for background placement or screening in larger rock beds.
Four-Wing Saltbush (Atriplex canescens) — Another Great Basin native with excellent drought tolerance and cold hardiness. Grows 4–6 feet tall with silver-green foliage and interesting winged seed pods in fall. Provides structure in a zeroscaping install and wildlife value for birds throughout winter.
Rabbitbrush (Ericameria nauseosa) — The quintessential late-season bloomer for Utah landscapes — dense clusters of bright yellow flowers from late August through October when most other plants are winding down. Silver-gray foliage looks good year-round. Zone 4 hardy and adapted to the harshest Great Basin conditions.
What to Avoid
Lavender — Many lavender varieties are marketed as drought-tolerant xeriscape plants, but English lavender (Lavandula angustifolia) is only marginally zone 5 hardy and struggles in Salt Lake County's clay soil and cold winter temperatures. It performs well in the warmer microclimates of Draper and Sandy but fails in colder air-drainage locations. If you want lavender, plant it in a well-drained raised area and accept that it may need to be replaced every 3–5 years.
Cacti — Many cacti sold at Utah nurseries are native to zones 8–10 and die in the first hard freeze. Opuntia (prickly pear) is the exception — multiple Utah-native prickly pear species are fully zone 4 hardy and perform excellently in Salt Lake County rock beds. Any other cactus type requires verification of cold hardiness before planting.
Plant Selection Included in Every Quote
Lundberg Landscape includes plant selection guidance in every zeroscaping quote — we select for your specific sun exposure, soil conditions, drainage, and aesthetic goals. No guesswork on what will actually survive Utah winters.