Hypericum formosum
Hypericum formosum
- Native to:
- Mexico
Taxonomy
- Division:
- Magnoliophyta | - Flowering plants
- Family:
- Hypericaceae
- Genus:
- Hypericum
- Species:
- Hypericum formosum
- USDA Symbol:
- HYFO7
Growth Characteristics
- Height:
- 80 cm
- Light Requirements:
- Full Sun
- Drought Tolerance:
- Medium
- Bloom Months:
- jun,jul,aug,sep
- Bloom Colors:
- yellow
Keystone Species Ranking
- Caterpillar Keystone:
- ★★★☆☆ Butterfly & moth species supported by this genus (NWF)
Reported Fauna Sightings
Bees: Fuzzy-horned bumble bee (Bombus mixtus)
Garden & Ecology Notes
- Wildlife Value:
- bees, butterflies
- Deer Resistant:
- Yes
- Fire Ecology:
- Fire adapted — tolerates or benefits from fire
- Fire Notes:
- Resprouts from rootstock following fire; common in post-fire meadow communities.
Soil Requirements
- Soil Type:
- moist, well-drained sandy loam
- pH:
- 5.5 - 7.0 (slightly acidic to neutral)
- Drainage:
- good drainage preferred
- Moisture:
- consistently moist
- Notes:
- native to wet meadows and stream banks
Propagation & Germination
- Stratification:
- Cold/moist stratification required — 30–90 days
- Germination Time:
- 14–30 days
- Notes:
- Seeds require light for germination; surface sow and do not cover.
The above propagation data sourced from Claude AI
Pre-treatment: Seeds are soaked in water for 1 to 4 hours, then placed on moist paper towels inside an opened plastic bag and refrigerated at 1 to 3 C for 30 days. Seeds are then surface sown on the medium.
Establishment: Seeds are hand collected in early to late fall when capsules turn brown and are just beginning to split open at the top of the capsule. Seeds are kept in paper bags in a well ventilated drying shed prior to cleaning. H. formosum occurs in coastal to subalpine habitats, from B.C. to Baja California, east to Montana, Wyoming, and south to Mexico.
Source: npn.rngr.net