How to Grow Curly Mitchell Grass

Curly Mitchell Grass

Astrebla lappacea

grass

Curly Mitchell Grass is a native Australian perennial tussock grass known for its distinctive tightly curled, wiry foliage that gives it a distinctive appearance. It is highly drought-tolerant and adapted to arid and semi-arid climates, commonly used for pasture and rangeland management. The grass is valued for livestock fodder and soil stabilization in harsh environments.

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Example Curly Mitchell Grass timeline · Pittsburgh, PA (Zone 6b)

  1. Plant Curly Mitchell Grass

    Around Apr 17

    Near Pittsburgh's average last spring frost.

  2. Tend & protect

    Late spring–summer

    Watering, feeding, and pest-watch reminders.

  3. Harvest Curly Mitchell Grass

    Around Aug 15

    ≈ 120 days after planting

Sample dates for Pittsburgh, PA. Sign up to get exact Curly Mitchell Grass dates for your own zip code.

Growing Conditions

☀️
Sun: Full sun, 8+ hours daily; extremely sun-demanding
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Water: Very low water requirements once established; extremely drought-tolerant. Minimal supplemental watering needed except during establishment phase (first season). Avoid overwatering.
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Spacing: 18-36 inches between plants or broadcast seed at 0.5-1 lb per acre inches
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Days to maturity: 120-180 days from seed to productive plant
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Planting depth: Surface sow or barely cover with soil (1/8 inch maximum); requires light for germination

Soil

Type: Well-draining sandy loam to clay loam soil; tolerates poor, infertile soils
pH: 6.0-8.0
Amendments:
Minimal amendments needed Gravel or sand for drainage if in heavy clay Low fertility tolerance makes additional fertilizer unnecessary

Growing Zones

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Thrives in USDA zones 9b-11; native to arid and semi-arid Australian regions

9b 10a 10b 11a 11b

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Growth Stages

1

Germination & Seedling

3-6 weeks

Tiny green shoots emerge from soil; develops first few fine leaves; very slow initial growth

Keep soil lightly moist (not wet) for first 4-6 weeks; protect from foot traffic; provide full sun exposure

2

Establishment

6-12 weeks

Tussock begins to form; curly foliage becomes more pronounced; root system develops deeply

Reduce watering frequency; allow natural drying between rains; no fertilizer needed; light grazing acceptable after 6 months

3

Vegetative Growth

Ongoing

Dense tussock with characteristic tight curls; wiry texture fully developed; plant reaches mature size

Maintain natural rainfall conditions; no supplemental water needed in adapted climates; manage livestock grazing; avoid overgrazing

4

Flowering

4-8 weeks

Inflorescences (seed heads) emerge above foliage; cylindrical spikelets form; usually occurring in summer months

Allow flowers to mature fully for seed production; minimal intervention needed; maintain grazing management

5

Seed Maturation & Harvest

4-6 weeks

Seeds darken and mature; seed heads become dry and brittle; seeds naturally disperse or can be collected

Collect seed by hand or mechanical harvesting; store dry seeds in cool conditions; allow some natural seeding for regeneration

Companion Planting

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Plant with:

Avoid planting near:

Aggressive water-demanding species Shading trees or tall competitors Species requiring regular irrigation Incompatible grazing animals in early establishment

Common Pests

  • Generally not a major issue on mature plants; early seedlings may need protection; allow natural predators; rarely requires intervention

  • Protect young seedlings with netting if needed; mature plants are resilient; use scare tactics for large plantings

  • Rare in arid climates; ensure good air circulation; avoid overwatering; fungicides rarely needed due to low humidity in native range

Uses

🦋

Livestock Pasture & Rangeland

Wildlife

Curly Mitchell Grass provides nutritious dry-season pasture for cattle and sheep in arid regions. Its high digestibility and persistence under grazing make it valuable for extensive livestock management where other forage fails. [source]

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Soil Stabilization & Erosion Control

Household

The deep root system and dense tussock growth effectively stabilize sandy and compacted soils, preventing wind and water erosion in arid and semi-arid landscapes. Commonly used in restoration projects for degraded rangeland. [source]

🎨

Native Plant Landscaping

Craft

Its distinctive curly texture and drought tolerance make it an attractive ornamental grass for xeriscaping and native plant gardens in appropriate climates. Provides visual interest year-round with minimal maintenance. [source]

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Traditional Aboriginal Use

Medicinal

Indigenous Australian peoples have traditionally utilized curly Mitchell grass and related species for nutritional and medicinal purposes. The grass and associated plants were part of traditional bush medicine practices. [source]

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Seed Production & Wildlife Food

Culinary

The seeds of curly Mitchell grass are nutritious and were historically used as a food source. They provide valuable forage for native wildlife and are important for ecosystem management in Australian rangelands. [source]

This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.

Harvest Tips

Seed collection: Harvest seed heads when fully mature (brownish color) in late summer/early fall by hand-stripping or mechanical harvesting. For forage: Graze rotationally to maintain plant vigor; avoid continuous heavy grazing; spring and early summer grazing is preferred. Collect seeds for propagation by allowing heads to dry naturally before stripping seeds into collection bags.

Fun Facts

  • 🌱 The distinctive tight curls in the foliage are an adaptation to extreme aridity—they reduce surface area exposure and help the plant conserve water under intense sun
  • 🌱 Curly Mitchell Grass can survive extended droughts exceeding 10+ years and will rapidly regenerate when rains return, making it invaluable for climate-resilient ranching
  • 🌱 The grass is named after Sir Thomas Mitchell, a famous 19th-century Australian explorer whose expeditions documented the plant's presence across inland Australia

Gardening Terms

New to gardening? Learn about terms used in this guide:

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