North America Native Plant

Desert Needlegrass

Botanical name: Achnatherum speciosum

USDA symbol: ACSP12

Life cycle: perennial

Habit: grass

Native status: Native to the lower 48 states  

Synonyms: Stipa speciosa Trin. & Rupr. (STSP3)   

Desert Needlegrass: The Perfect Low-Maintenance Native Grass for Water-Wise Gardens If you’re searching for a graceful, drought-tolerant grass that won’t demand constant attention, desert needlegrass might just be your new best friend. This lovely native bunch grass brings subtle beauty and practical benefits to western gardens without the fuss of ...

Desert Needlegrass: The Perfect Low-Maintenance Native Grass for Water-Wise Gardens

If you’re searching for a graceful, drought-tolerant grass that won’t demand constant attention, desert needlegrass might just be your new best friend. This lovely native bunch grass brings subtle beauty and practical benefits to western gardens without the fuss of high-maintenance plants.

What is Desert Needlegrass?

Desert needlegrass (Achnatherum speciosum) is a perennial bunch grass native to the western United States. You might also encounter it under its former scientific name, Stipa speciosa. This charming grass grows in neat, fountain-like clumps rather than spreading aggressively, making it a well-behaved addition to any landscape.

Where Does It Naturally Grow?

This hardy native calls the American West home, naturally occurring across Arizona, California, Colorado, Nevada, New Mexico, Oregon, and Utah. It has adapted beautifully to the challenging conditions of arid and semi-arid regions, thriving where many other plants struggle.

Why Choose Desert Needlegrass for Your Garden?

There are plenty of compelling reasons to consider this native grass for your landscape:

  • Incredibly drought-tolerant: Once established, it requires minimal water
  • Native plant benefits: Supports local ecosystems and wildlife
  • Low maintenance: No need for frequent watering, fertilizing, or pest control
  • Attractive form: Creates elegant, upright clumps that add texture and movement
  • Fire tolerant: Bounces back well after fire events
  • Moderate growth rate: Won’t overwhelm your garden or require constant trimming

Physical Characteristics

Desert needlegrass typically reaches about 2 feet in height, forming neat bunches with an erect, upright growth habit. The foliage displays a pleasant green color with medium texture, while the inconspicuous yellow flowers bloom in late spring. Don’t expect showy blooms—this grass’s beauty lies in its graceful form and movement in the breeze.

The seed heads appear in summer, displaying brown coloration that adds subtle seasonal interest. While not particularly conspicuous, they contribute to the plant’s overall charm and provide food for wildlife.

Perfect Garden Settings

Desert needlegrass shines in several landscape situations:

  • Xeriscapes and water-wise gardens: Its low water needs make it ideal for drought-conscious gardening
  • Native plant gardens: Pairs beautifully with other western natives
  • Naturalistic landscapes: Creates authentic western habitat
  • Erosion control: The root system helps stabilize slopes
  • Accent plantings: Use as a textural element among other plants

Growing Conditions

One of the best things about desert needlegrass is its adaptability to challenging conditions. Here’s what it prefers:

  • Soil: Adapts well to coarse and medium-textured soils; avoid heavy clay
  • pH: Tolerates slightly acidic to neutral soils (pH 6.0-7.7)
  • Water: Low water requirements once established (6-14 inches annually)
  • Sun exposure: Full sun only—this grass is shade intolerant
  • Temperature: Hardy to -13°F, requires at least 120 frost-free days
  • Fertility: Low fertility requirements—actually prefers lean soils

Hardiness Zones

Desert needlegrass thrives in USDA Hardiness Zones 4-8, making it suitable for much of the western United States and beyond. Its cold tolerance down to -13°F means it can handle surprisingly harsh winter conditions.

Planting and Care Tips

Growing desert needlegrass successfully is refreshingly straightforward:

  • Propagation: Grow from seed—it’s the most reliable method
  • Seeding rate: With 225,000 seeds per pound, a little goes a long way
  • Establishment: Provide regular water during the first growing season
  • Maintenance: Once established, requires virtually no care
  • Fertilizing: Avoid fertilizing—this grass prefers lean conditions
  • Pruning: Cut back in late winter if desired, though it’s not necessary

Wildlife and Ecological Benefits

While we don’t have specific wildlife benefit data for desert needlegrass, native bunch grasses like this one typically provide valuable habitat structure and food sources for various wildlife species. The seeds may feed small mammals and birds, while the grass structure offers cover for insects and small animals.

Potential Drawbacks

Desert needlegrass isn’t perfect for every situation. Consider these limitations:

  • Shade intolerance: Must have full sun to thrive
  • Limited commercial availability: May be challenging to source
  • Specific climate needs: Best suited for arid and semi-arid regions
  • Slow post-harvest regrowth: Takes time to recover if cut back severely

The Bottom Line

Desert needlegrass offers an excellent choice for gardeners seeking a low-maintenance, drought-tolerant native grass. Its graceful form, minimal care requirements, and ecological benefits make it particularly valuable in water-wise landscapes and native plant gardens. While it may not be the showiest plant in your garden, its quiet beauty and practical benefits earn it a well-deserved spot in sustainable western landscapes.

If you can find seed sources and have the right growing conditions, desert needlegrass rewards patient gardeners with years of trouble-free beauty. Just remember to give it full sun, well-draining soil, and resist the urge to pamper it with too much water or fertilizer—this tough native prefers the simple life.

How

Desert Needlegrass

Grows

Growing season

Spring and Summer

Lifespan

Moderate

Growth form & shape

Bunch and Erect

Growth rate

Moderate

Height at 20 years
Maximum height

2.0

Foliage color

Green

Summer foliage density

Moderate

Winter foliage density

Porous

Foliage retention

No

Flowering

No

Flower color

Yellow

Fruit/seeds

No

Fruit/seed color

Brown

Allelopath

No

Nitrogen fixing

None

Toxic

None

C:N Ratio

Medium

Fire Resistant

No

Foliage Texture

Medium

Low-growing Grass

No

Resproutability

No

Coppice Ability

No

Bloat

None

Desert Needlegrass

Growing Conditions

Adapted to Coarse Soil

Yes

Adapted to Medium Soil

Yes

Adapted to Fine Soil

No

Anaerobic tolerance

None

CaCO₃ tolerance

Medium

Cold Stratification

No

Drought tolerance

High

Nutrient requirement

Low

Fire tolerance

High

Frost-free days minimum

120

Hedge tolerance

None

Moisture requirement

Low

pH range

6.0 to 7.7

Plants per acre
Precipitation range (in)

6 to 14

Min root depth (in)

10

Salt tolerance

Low

Shade tolerance

Intolerant

Min temperature (F)

-13

Cultivating

Desert Needlegrass

Flowering season

Late Spring

Commercial availability

No Known Source

Fruit/seed abundance

Medium

Fruit/seed season

Summer to Summer

Fruit/seed persistence

No

Propagated by bare root

No

Propagated by bulb

No

Propagated by container

No

Propagated by corm

No

Propagated by cuttings

No

Propagated by seed

Yes

Propagated by sod

No

Propagated by sprigs

No

Propagated by tubers

No

Seed per pound

225000

Seed spread rate

Moderate

Seedling vigor

Medium

Small grain

No

Vegetative spread rate

Desert Needlegrass

Classification

Group

Monocot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Liliopsida - Monocotyledons

Subclass

Commelinidae

Order

Cyperales

Family

Poaceae Barnhart - Grass family

Genus

Achnatherum P. Beauv. - needlegrass

Species

Achnatherum speciosum (Trin. & Rupr.) Barkworth - desert needlegrass

Plant data source: USDA, NRCS 2025. The PLANTS Database. https://plants.usda.gov,. 2/25/2025. National Plant Data Team, Greensboro, NC USA