Plant Min Zone: 3a
Plant Max Zone: 8b
Sunlight: All Day Full Sun, Full Sun
Water / Rainfall: Low, Average
Soil Quality: Poor, Average, Rich
Bloom Season: Summer, Late Summer
Flower Color: Yellow
Berry / Fruit Color: Green
Spring Foliage Color: Green
Summer Foliage Color: Green
Fall Foliage Color: Green
Evergreen Foliage: No
Winter Interest: No
Scented Flowers: No
Drought Tolerance: Low, Medium
Wet-Feet Tolerance: Low, Medium
Humidity Tolerance: High
Wind Tolerance: Medium
Poor Soil Tolerance: Rocky Soils, Sandy Soils, Clay Soils
Height: 4' - 7'
Width: 4' - 7'
Growth Rate: Fast
Service Life: Very Long: 10-20 years
Maintenance Need: High
Spreading Potential: Medium
Yearly Trimming Tips: Trim Perennial to Ground Around First Fall Freeze: No Winter Interest.
Plant Grouping Size: Specimen Planting of 1-3, Small Grouping of 3-5
Best Side of House: South Exposure, West Exposure, East Exposure, North Exposure
Extreme Planting Locations: Tolerates Extreme Heat, Base of Retaining Wall Locations, Resistant to Rabbits
Ornamental Features: Exceptional / Colorful Foliage
Special Landscape Uses: Naturalizing
Possible Pest Problems: None
Plant Limitations: May Needs Staking, Unwanted Self-seeding, May Be Too Invasive for Garden Use
>>>>>Silphium perfoliatum (Silphium perfoliatum) >>>>>>>>is also grown as a large bog plant needing constantly moist soil rich in organic matter. As a rain garden plant, it will thrive is a depressed area in the landscape that collects rain water from a roof during spring and summer periods of rain but then >>>>>might go partially dormant if the water hole dries out completely. Considered a "Once it's there, it's there forever" plant!