Taxonomy

Division:

Magnoliophyta | - Flowering plants

Family:

Plantaginaceae

Genus:

Gratiola

Species:

Gratiola graniticola

USDA Symbol:

GRGR7

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

Garden & Ecology Notes

Deer Resistant:

Yes

Soil Requirements

Soil Type:

sandy, well-drained, nutrient-poor soil

pH:

5.5 - 7.0 (slightly acidic to neutral)

Drainage:

excellent drainage required

Moisture:

consistently moist

Notes:

prefers granite outcrop environments

Propagation & Germination

Stratification:

Cold/moist stratification required — 30–60 days

Germination Time:

14–42 days

Notes:

Seeds require light for germination. Surface sow and keep consistently moist.

The above propagation data sourced from Claude AI