Philadelphia Panicgrass
Panicum philadelphicum
- Native to:
- Canada, United States
A. S. Hitchcock, Pricipal Botanist, Division of Plant Exploration and Introduction, Bureau of Plant Industry, USDA.






Taxonomy
- Division:
- Magnoliophyta | - Flowering plants
- Family:
- Poaceae
- Genus:
- Panicum
- Species:
- Panicum philadelphicum
- USDA Symbol:
- PAPH
Growth Characteristics
- Life Cycle:
- Annual
- Growth Habit:
- Graminoid
- Height:
- 60 cm
- Light Requirements:
- Full Sun
- Drought Tolerance:
- Medium
- Bloom Months:
- jul,aug,sep,oct
Keystone Species Ranking
- Caterpillar Keystone:
- ★★★☆☆ Butterfly & moth species supported by this genus (NWF)
Host Plant for Caterpillars
Virginia Ctenucha (Ctenucha virginica)
Garden & Ecology Notes
- Wildlife Value:
- birds, small mammals
- Fire Ecology:
- Fire adapted — tolerates or benefits from fire
- Fire Notes:
- Resprouts from base after fire; benefits from periodic burns that reduce competition.
Soil Requirements
- Soil Type:
- moist, fertile, well-drained loam
- pH:
- 5.5 - 7.5 (slightly acidic to neutral)
- Drainage:
- tolerates poor drainage
- Moisture:
- consistently moist
- Notes:
- commonly found in wet meadows and marshes
Propagation & Germination
- Stratification:
- Cold/moist stratification required — 30–60 days
- Germination Time:
- 14–30 days
- Notes:
- Seeds germinate readily after cold stratification. Light may enhance germination.
The above propagation data sourced from Claude AI