Cottongrass

Eriophorum × beringianum

Native to:
Aleutian Is., Russia, United States
Cottongrass

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Taxonomy

Division:
Magnoliophyta | - Flowering plants
Family:
Cyperaceae
Genus:
Eriophorum
Species:
Eriophorum × beringianum
USDA Symbol:
ERBE4

Growth Characteristics

Life Cycle:
Perennial
Growth Habit:
Graminoid
Height:
50 cm
Light Requirements:
Full Sun
Drought Tolerance:
Low
Bloom Months:
jun,jul,aug
Bloom Colors:
white

Garden & Ecology Notes

Wildlife Value:
waterfowl, small mammals
Deer Resistant:
Yes

Soil Requirements

Soil Type:
peaty, nutrient-poor, waterlogged soil
pH:
4.5 - 6.5 (acidic to slightly acidic)
Drainage:
tolerates poor drainage
Moisture:
consistently moist to waterlogged
Notes:
Common in tundra and boggy areas

Propagation & Germination

Stratification:
Cold/moist stratification required — 30–60 days
Germination Time:
14–42 days
Notes:
Seeds require consistent moisture and cold stratification. Best sown on moist peat surface.

The above propagation data sourced from Claude AI

Pre-treatment: Cold-moist stratification for 30 days at 1–5°C (34–41°F).

Source: Claude AI