Space plants 18 inches apart in a moisture retentive soil that is high in organic matter. Polemonium caeruleum performs well in full sun in the North but requires partial shade in warmer Southern areas. Polemonium reptans prefers partial shade in all areas.
Water regularly during dry periods. A mulch of pine needles, straw, shredded bark or chopped leaves will conserve soil moisture. Divide plants every 3 to 4 years as needed.