Largeleaf Waterleaf
Hydrophyllum macrophyllum
- Native to:
- United States
Mason Brock ( Masebrock (en.wikipedia.org) )







Taxonomy
- Division:
- Magnoliophyta | - Flowering plants
- Family:
- Boraginaceae
- Genus:
- Hydrophyllum
- Species:
- Hydrophyllum macrophyllum
- USDA Symbol:
- HYMA
Growth Characteristics
- Life Cycle:
- Perennial
- Growth Habit:
- Forb/herb
- Height:
- 60 cm
- Light Requirements:
- Part Shade
- Drought Tolerance:
- Low
- Bloom Months:
- apr,may,jun
- Bloom Colors:
- white, lavender
Wildlife Benefits
- Bees:
- ★☆☆☆☆ Documented bee visitation (GBIF)
- Butterflies & Moths:
- ★☆☆☆☆ Documented Lepidoptera association (GBIF)
Garden & Ecology Notes
- Wildlife Value:
- bees, butterflies
Soil Requirements
- Soil Type:
- rich, well-drained loamy soil
- pH:
- 5.5 - 7.0 (slightly acidic to neutral)
- Drainage:
- good drainage preferred
- Moisture:
- consistently moist
- Notes:
- prefers shaded woodland environments
Propagation & Germination
- Stratification:
- Cold/moist stratification required — 60–90 days
- Germination Time:
- 14–42 days
- Notes:
- Seeds require cold stratification and may germinate erratically. Best sown fresh in fall for natural stratification.
The above propagation data sourced from Claude AI
Pre-treatment: Seeds are warm and cold stratified
Establishment: A. pachypoda is found within temperate deciduous forests of North America.
Source: npn.rngr.net