Chandelier Lupine thrives in well-draining soil and requires full sunlight to bloom optimally. Ensure the soil remains moderately moist, especially during dry spells, but avoid waterlogging. Deadhead spent flowers to encourage further blooming and prevent self-seeding. Fertilize sparingly, as excessive nutrients can lead to lush foliage at the expense of flowers. Prune back the plant after flowering to maintain a tidy appearance and promote healthy growth.