Sunflower-perennial

 
Grow in a moderately fertile, humus-rich, moist but well-drained, neutral to alkaline soil in full sun. May need support. See staking perennials
Divide established clumps every 2-4 years to both increase plants and retain vigour. 
Suggested planting locations and garden types
City and courtyard gardens
Cottage and informal garden
Wildflower meadow
Wildlife gardens
Prairie planting
Low Maintenance
Flower borders and beds
Cut flowers
Wall side borders
Pruning
Cut back old stems after flowering as they die down for the winter