How to Grow Snow Tussock
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Snow Tussock
Chionochloa
grassChionochloa is a genus of striking evergreen tussock grasses native to New Zealand, known for their silvery-white flower plumes and fountain-like foliage. These cold-hardy ornamental grasses create dramatic architectural interest in landscapes and are particularly valued for their ability to thrive in alpine and subalpine conditions. They range from compact varieties to large specimens reaching 5+ feet in height.
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Example Snow Tussock timeline · Pittsburgh, PA (Zone 6b)
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Plant Snow Tussock
Around Apr 17Near Pittsburgh's average last spring frost.
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Tend & protect
Late spring–summerWatering, feeding, and pest-watch reminders.
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Harvest Snow Tussock
Late summer into fallBefore the first fall frost (≈ Nov 8)
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Growing Conditions
Soil
Growing Zones
Find your zone →Thrives in zones 5-8; some species tolerate zone 4 with protection; prefer cooler climates
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Get my Snow Tussock timeline →Growth Stages
Vegetative Growth
1-2 yearsPlant expands laterally, forming a dense fountain-like mound of silvery-green to blue-green foliage
Maintain good drainage. Remove any dead or damaged leaves. No fertilizer needed; these plants thrive in poor soil
Flowering
2-3 months (typically summer through fall)Tall, elegant flowering culms emerge from the center with silvery-white to golden plumes that tower above the foliage
Allow flowers to fully develop without deadheading initially for winter interest. Can deadhead after flowering if desired for tidiness
Seed Production
4-6 monthsFlowers mature into seed heads with persistent, attractive silvery plumes that persist through winter
Leave in place for winter interest and wildlife value. Seeds self-sow readily in suitable conditions
Dormancy/Winter
4-5 monthsFoliage may discolor slightly (bronze, tan, or reddish tones); plant remains evergreen but growth slows dramatically
No supplemental watering needed. Foliage color change is normal; do not cut back entirely. Remove only damaged material
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Ensure good air circulation; remove affected foliage; fungicide spray if severe; avoid overhead watering
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and
Remove by hand; encourage ground beetles; create barriers with coarse materials; avoid excess moisture
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Increase humidity if possible; strong water spray; insecticidal soap if population high
Uses
Dried Arrangements & Floral Design
CraftThe silvery-white plumes make stunning, long-lasting additions to dried flower bouquets and ornamental arrangements. Stems can be harvested at peak bloom and dried for year-round use. [source]
Wildlife Habitat & Shelter
WildlifeDense tussocks provide shelter and nesting sites for birds and beneficial insects. Seeds offer food for wildlife over winter. Native to New Zealand where it supports endemic bird species. [source]
Landscape Focal Point
HouseholdStriking architectural form and silvery plumes create year-round visual interest in borders, rock gardens, and alpine settings. Height variation between species (compact to 6 feet) allows placement in various garden styles. [source]
Traditional Maori Uses
CulinaryHistorically used by Maori people of New Zealand for thatching, weaving, and traditional fiber arts. Some species have cultural and ethnobotanical significance. [source]
Alpine Plant Conservation & Research
MedicinalSome Chionochloa species are subjects of botanical research on alpine adaptation, cold tolerance, and climate-resilient ornamental breeding. [source]
This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.
Harvest Tips
Chionochloa is ornamental; harvest flowering stems in late summer/fall for dried arrangements by cutting individual culms at the base when plumes are fully developed and silvery. Stems dry naturally in the landscape. Allow seed heads to persist for winter interest and self-seeding.
Fun Facts
- 🌱 Chionochloa is native exclusively to New Zealand's mountainous regions, where it evolved to thrive in subalpine meadows and harsh alpine environments.
- 🌱 The name 'Chionochloa' comes from Greek words meaning 'snow' (chiōn) and 'grass' (chloa), reflecting its natural habitat in snow-prone regions.
- 🌱 Some Chionochloa species can live for 50+ years, making them a long-term investment in the landscape with increasing character and presence as they age.
Gardening Terms
New to gardening? Learn about terms used in this guide:
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