Horehound

Marrubium incanum

Native to:
Albania, Bulgaria, Italy, NW. Balkan Pen., Sardegna, Sicilia

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Taxonomy

Division:
Magnoliophyta | - Flowering plants
Family:
Lamiaceae
Genus:
Marrubium
Species:
Marrubium incanum
USDA Symbol:
MAIN19

Growth Characteristics

Height:
60 cm
Light Requirements:
Full Sun
Drought Tolerance:
High
Bloom Months:
may,jun,jul,aug
Bloom Colors:
white

Garden & Ecology Notes

Wildlife Value:
bees
Deer Resistant:
Yes
Fragrant:
Yes

Soil Requirements

Soil Type:
poor, rocky, well-drained soil
pH:
6.0 - 8.0 (neutral to slightly alkaline)
Drainage:
excellent drainage required
Moisture:
dry to moderate
Notes:
native to Mediterranean regions with dry summers

Propagation & Germination

Stratification:
Cold/moist stratification required — 30–60 days
Germination Time:
14–28 days
Notes:
Seeds germinate readily with light; cold stratification improves germination rates.

The above propagation data sourced from Claude AI

ORGHPS Germination Guide: Sow @ 20C. Germinates within 3 months.

Source: Ontario Rock Garden & Hardy Plant Society