American Dunegrass

Leymus mollis

Native to:
Aleutian Is., Canada, China, Greenland, Japan, Korea, Kuril Is., Labrador, Prince Edward I., Russia, United States

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Taxonomy

Division:
Magnoliophyta | - Flowering plants
Family:
Poaceae
Genus:
Leymus
Species:
Leymus mollis
USDA Symbol:
LEMO8

Growth Characteristics

Life Cycle:
Perennial
Growth Habit:
Graminoid
Height:
150 cm
Light Requirements:
Full Sun
Drought Tolerance:
Medium
Bloom Months:
jun,jul,aug

Garden & Ecology Notes

Wildlife Value:
birds, small mammals
Deer Resistant:
Yes
Salt Tolerant:
Yes
Fall Color:
yellow
Fire Ecology:
Fire adapted — tolerates or benefits from fire
Fire Notes:
Resprouts vigorously from extensive rhizome system following fire or disturbance.

Soil Requirements

Soil Type:
sandy, well-drained, nutrient-poor soil
pH:
5.5 - 8.0 (slightly acidic to alkaline)
Drainage:
excellent drainage required
Moisture:
dry to moderate
Notes:
Commonly found in coastal sand dunes.

Propagation & Germination

Stratification:
Cold/moist stratification required — 30–60 days
Germination Time:
14–28 days
Notes:
Seeds germinate readily after cold stratification. Can also be propagated by rhizome division.

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