Bloom Color
Exposure
Height
Soil Type
Other Attributes
PRAIRIE DOCK
Silphium terebinthinaceum
Produces clumps of huge oval leaves up to 2′ long! 3″ wide yellow daisies on stems 6 – 8’+ tall. July – September. Full sun. Drought tolerant. Attracts hummingbirds, butterflies and seed eating birds. Great for adding a bold statement. Mixed borders, mass plantings, rain gardens. Eastern U.S. native. Zone 4.