wholeleaf rosinweed
Silphium integrifolium
USDA zones4 to 8
SunNeeds full sun (6+ hours)
WaterHandles dry to moist soil
Size2 to 6 feet tall1 to 3 feet wide
- Growth rate
- Moderate
- Habit
- Herb
- Bloom season
- Summer, autumn
- Bloom color
- Yellow
- Foliage color
- Green
- Soil types
- Sand, loam, clay
- Soil pH
- Acid, alkaline, neutral
Garden uses
Attracts
Notes
Wholeleaf rosinweed (Silphium integrifolium) is a perennial for borders, pollinator gardens, meadows, and naturalized areas. It is hardy to USDA zone 4, or down to -30°F (-34°C). This plant likes full sun and dry to moist, sandy, loamy, or clay soil. It grows 2 to 6 feet tall and bears large yellow flowers with rough, paired leaves. Butterflies, bees, and birds visit the blooms.
Pairs well with Common milkweed, Blue grama, and Gladiator ornamental onion.
Native range
Central United States.