Limestone Hedgehyssop

Gratiola quartermaniae

Native to:
Canada, United States

📍 View on iNaturalist →

Taxonomy

Division:
Magnoliophyta | - Flowering plants
Family:
Plantaginaceae
Genus:
Gratiola
Species:
Gratiola quartermaniae
USDA Symbol:
GRQU2

Growth Characteristics

Life Cycle:
Annual
Growth Habit:
Forb/herb
Height:
30 cm
Light Requirements:
Full Sun
Drought Tolerance:
Low
Bloom Months:
apr,may,jun
Bloom Colors:
white, yellow

Soil Requirements

Soil Type:
moist, sandy, nutrient-poor soil
pH:
5.5 - 7.0 (slightly acidic to neutral)
Drainage:
tolerates poor drainage
Moisture:
consistently moist
Notes:
often found in wetland areas

Propagation & Germination

Stratification:
Cold/moist stratification required — 30–60 days
Germination Time:
14–30 days
Notes:
Seeds may require light for germination. Sow on surface of moist medium.

The above propagation data sourced from Claude AI