North America Native Plant

Sixweeks Muhly

Botanical name: Muhlenbergia depauperata

USDA symbol: MUDE

Life cycle: annual

Habit: grass

Native status: Native to the lower 48 states  

Sixweeks Muhly: A Delicate Native Grass for Southwest Gardens If you’re looking for a subtle, low-maintenance native grass that won’t dominate your landscape, sixweeks muhly (Muhlenbergia depauperata) might be just what you need. This charming little annual grass brings a delicate texture to gardens while supporting local ecosystems in the ...

Sixweeks Muhly: A Delicate Native Grass for Southwest Gardens

If you’re looking for a subtle, low-maintenance native grass that won’t dominate your landscape, sixweeks muhly (Muhlenbergia depauperata) might be just what you need. This charming little annual grass brings a delicate texture to gardens while supporting local ecosystems in the American Southwest.

What Is Sixweeks Muhly?

Sixweeks muhly is a native annual grass that’s as unassuming as it is useful. True to its name, this grass completes its entire life cycle in about six weeks, making it a quick-growing option for gardeners who want fast results. As a graminoid, it belongs to the grass family and displays the fine, narrow leaves characteristic of these plants.

This native beauty calls the southwestern United States home, naturally occurring in Arizona, Colorado, New Mexico, Texas, and Utah. Being native to these regions means it’s perfectly adapted to the challenging conditions that characterize much of the Southwest.

Why Grow Sixweeks Muhly?

While sixweeks muhly might not be the showstopper of your garden, it offers several compelling reasons to include it in your landscape:

  • True native credentials: Supporting local ecosystems by choosing plants that naturally belong in your area
  • Low maintenance: Once established, this grass requires minimal care and attention
  • Drought tolerance: Perfect for water-wise gardening in arid climates
  • Quick establishment: As an annual, it provides fast ground cover and fills in spaces quickly
  • Natural reseeding: Will often self-seed for next year’s display

Garden Role and Design Ideas

Sixweeks muhly works best in naturalistic settings where its subtle charm can shine. Consider using it in:

  • Xeriscape gardens: Its drought tolerance makes it perfect for water-conscious landscapes
  • Native plant gardens: Adds authentic local character to regional plantings
  • Restoration projects: Helps establish natural ground cover in disturbed areas
  • Rock gardens: Softens harsh edges with delicate texture
  • Meadow plantings: Creates a natural grassland feel when mixed with other natives

This grass serves as an excellent supporting player, providing texture and movement while allowing more colorful native wildflowers to take center stage.

Growing Conditions and Care

One of sixweeks muhly’s greatest strengths is its adaptability to tough growing conditions. Here’s what this resilient grass prefers:

  • Sunlight: Full sun exposure for best growth
  • Soil: Thrives in sandy, rocky, or well-draining soils; doesn’t mind poor soil conditions
  • Water: Drought tolerant once established; minimal watering needed
  • Climate zones: Hardy in USDA zones 4-9, covering most of its native range

Planting and Care Tips

Growing sixweeks muhly successfully is refreshingly straightforward:

  • Seeding: Direct seed in fall for best germination rates
  • Spacing: Scatter seeds naturally rather than planting in rigid patterns
  • Watering: Water lightly during germination, then reduce as plants establish
  • Maintenance: Virtually maintenance-free once growing
  • Harvesting seeds: Allow plants to set seed if you want natural reseeding

Wildlife and Ecosystem Benefits

While sixweeks muhly may not attract hordes of pollinators like flashy wildflowers do (it’s wind-pollinated, after all), it still contributes to local ecosystems. The seeds provide food for birds and small mammals, and the grass structure offers habitat for beneficial insects.

Is Sixweeks Muhly Right for Your Garden?

This native grass is ideal if you’re creating a low-maintenance, water-wise landscape that celebrates regional character. It’s not the right choice if you want bold, attention-grabbing plants or need something that provides structure year-round (remember, it’s an annual).

Sixweeks muhly shines when you embrace its understated nature and use it as part of a broader native plant community. It’s the perfect grass for gardeners who appreciate subtle beauty and want to support local ecosystems without a lot of fuss.

Ready to add some authentic Southwest character to your garden? Sixweeks muhly might just be the humble hero your landscape needs.

Sixweeks Muhly

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

Muhlenbergia Schreb. - muhly

Species

Muhlenbergia depauperata Scribn. - sixweeks muhly

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