Frost Grass

Spodiopogon sibiricus

Native to:
China, Hainan, Japan, Korea, Russia

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Taxonomy

Division:
Magnoliophyta | - Flowering plants
Family:
Poaceae
Genus:
Spodiopogon
Species:
Spodiopogon sibiricus
USDA Symbol:
SPSI5

Growth Characteristics

Growth Habit:
Graminoid
Height:
150 cm
Light Requirements:
Full Sun
Drought Tolerance:
Medium
Bloom Months:
jul,aug,sep
Bloom Colors:
purple, silver

Garden & Ecology Notes

Wildlife Value:
birds, small mammals
Deer Resistant:
Yes
Fall Color:
red, burgundy, orange
Fire Ecology:
Fire adapted — tolerates or benefits from fire
Fire Notes:
As a warm-season grass, tolerates fire and resprouts from the root crown after burning.

Soil Requirements

Soil Type:
rich, well-drained loamy soil
pH:
5.5 - 7.0 (slightly acidic to neutral)
Drainage:
good drainage required
Moisture:
consistently moist
Notes:
prefers fertile soils with organic matter

Propagation & Germination

Stratification:
Cold/moist stratification required — 30–60 days
Germination Time:
14–28 days
Notes:
Sow seeds on surface or lightly covered; light may aid germination.

The above propagation data sourced from Claude AI

ORGHPS Germination Guide: Sow @ 20C. Germinates within 3 months. Requires light / surface sow (fine seed).

Source: Ontario Rock Garden & Hardy Plant Society