Perennial: Tolerates deer, bog and clay. Has strongly toothed, heart-shaped leaves with tall, dense racemes of small deep yellow flowers on contrasting black stems. Good cottage garden look. Attracts butterflies. Bloom time: summer. Size: 5-6' x 5'. Exposure: part shade. Water: moist (can tolerate wet soils). USDA Z4. (L. przewalskii x stenocephala 'The Rocket')