Tall Cottongrass

Eriophorum angustifolium

Native to:
Albania, Aleutian Is., Austria, Baltic States, Belarus, Belgium, Bulgaria, Canada, China, Czechia-Slovakia, Denmark, Finland, Føroyar, France, Germany, Greece, Greenland, Hungary, Iceland, Ireland, Italy, Kazakhstan, Korea, Kuril Is., Labrador, Netherlands, North Caucasus, Norway, NW. Balkan Pen., Poland, Portugal, Prince Edward I., Romania, Russia, Spain, Svalbard, Sweden, Switzerland, Transcaucasus, Türkiye, United States

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Taxonomy

Division:
Magnoliophyta | - Flowering plants
Family:
Cyperaceae
Genus:
Eriophorum
Species:
Eriophorum angustifolium
USDA Symbol:
ERAN6

Growth Characteristics

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

Garden & Ecology Notes

Wildlife Value:
waterfowl, small mammals
Deer Resistant:
Yes

Soil Requirements

Soil Type:
peaty, nutrient-poor, waterlogged soil
pH:
4.0 - 6.0 (acidic to slightly acidic)
Drainage:
tolerates poor drainage
Moisture:
consistently moist
Notes:
Common in bogs and wet meadows

Propagation & Germination

Stratification:
Cold/moist stratification required — 30–60 days
Germination Time:
14–42 days
Notes:
Requires light for germination. Seeds need constant moisture and cool temperatures.

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

ORGHPS Germination Guide: N Sow directly in the garden. Sow @ 20°C. Seed germinates within 3 months Requires light or the seed is very fine. Surface sow and expose to light. * peat based medium

Source: Ontario Rock Garden & Hardy Plant Society