Largeflower Fameflower
Phemeranthus calycinus
- Native to:
- Mexico, United States
Mason Brock ( Masebrock (en.wikipedia.org) )






Taxonomy
- Division:
- Magnoliophyta | - Flowering plants
- Family:
- Montiaceae
- Genus:
- Phemeranthus
- Species:
- Phemeranthus calycinus
- USDA Symbol:
- PHCA48
Growth Characteristics
- Life Cycle:
- Perennial
- Growth Habit:
- Forb/herb , Subshrub
- Height:
- 15 cm
- Light Requirements:
- Full Sun
- Drought Tolerance:
- High
- Bloom Months:
- jun,jul,aug,sep
- Bloom Colors:
- pink, magenta
Wildlife Benefits
- Bees:
- ★☆☆☆☆ Documented bee visitation (GBIF)
Reported Fauna Sightings
Bees: Two-spotted Longhorn (Melissodes bimaculatus)
Garden & Ecology Notes
- Wildlife Value:
- bees
- Deer Resistant:
- Yes
- Fire Ecology:
- Fire adapted — tolerates or benefits from fire
- Fire Notes:
- Found in fire-maintained glades and rocky prairies; tolerates periodic burning.
Soil Requirements
- Soil Type:
- rocky, well-drained sandy soil
- pH:
- 6.0 - 7.5 (slightly acidic to neutral)
- Drainage:
- excellent drainage required
- Moisture:
- dry to moderate
- Notes:
- thrives in rocky outcrops and open areas
Propagation & Germination
- Stratification:
- Cold/moist stratification required — 30–60 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 placed in cold moist stratification
Establishment: T. calycinum is found from Illinois south to Texas and west to Colorado
Source: npn.rngr.net