American Stoneseed

Lithospermum latifolium

American Stoneseed

Mason Brock (Masebrock)

Taxonomy

Division:
Magnoliophyta | - Flowering plants
Family:
Boraginaceae
Genus:
Lithospermum
Species:
Lithospermum latifolium

Growth Characteristics

Life Cycle:
Perennial
Growth Habit:
Forb/herb
Height:
3-4 ft
Light Requirements:
Full Sun
Drought Tolerance:
High
Bloom Months:
mar, apr, may, jun, jul, aug
Bloom Colors:
Yellow

Native Range

United States: Arkansas, Georgia, Iowa, Illinois, Indiana, Kansas, Kentucky, Massachusetts, Maryland, Michigan, Minnesota, Missouri, Mississippi, New York, Ohio, Pennsylvania, South Dakota, Tennessee, Virginia, Wisconsin, West Virginia, Canada: Ontario, Quebec

Host Plant for Caterpillars

Ethmia longimaculella

Soil Requirements

Soil Type:
rich, well-drained loamy soil
pH:
6.0 - 7.5 (slightly acidic to neutral)
Drainage:
excellent drainage required
Moisture:
dry to moderate
Notes:
prefers calcareous soils

Germination Information

Pre-treatment: Cold-moist stratification for 30 days at 1–5°C (34–41°F).; then Cold-moist stratification for 60 days.

Source: OpenAI GPT-4o