Karley Rose Fountain Grass thrives in well-draining soil and full sun for optimal growth. Water regularly during the first growing season to establish a deep, extensive root system; once established, it is drought-tolerant. Prune back to the ground in late winter or early spring to encourage fresh growth. Avoid over-fertilizing, as this can lead to floppy growth. Divide clumps every few years to maintain vigor and prevent overcrowding.