Edmonton Hempnettle

Galeopsis speciosa

Native to:
Albania, Austria, Baltic States, Belarus, Belgium, Bulgaria, Czechia-Slovakia, Denmark, Finland, France, Germany, Greece, Hungary, Italy, Netherlands, Norway, NW. Balkan Pen., Poland, Romania, Russia, Sweden, Switzerland, Ukraine

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Taxonomy

Division:
Magnoliophyta | - Flowering plants
Family:
Lamiaceae
Genus:
Galeopsis
Species:
Galeopsis speciosa
USDA Symbol:
GASP7

Growth Characteristics

Life Cycle:
Annual
Growth Habit:
Forb/herb
Height:
100 cm
Light Requirements:
Full Sun
Drought Tolerance:
Low
Bloom Months:
jun,jul,aug,sep
Bloom Colors:
yellow, purple

Garden & Ecology Notes

Wildlife Value:
bees, bumblebees

Soil Requirements

Soil Type:
rich, well-drained loamy soil
pH:
5.5 - 7.5 (slightly acidic to neutral)
Drainage:
tolerates poor drainage
Moisture:
consistently moist
Notes:
often found in disturbed areas and edges of forests

Propagation & Germination

Stratification:
Cold/moist stratification required — 30–60 days
Germination Time:
14–28 days
Notes:
Seeds germinate best in cool conditions with consistent moisture.

The above propagation data sourced from Claude AI

ORGHPS Germination Guide: Sow @ 4C for 3 months, then place @ 20C for 3 months. Requires darkness.

Source: Ontario Rock Garden & Hardy Plant Society