Plant Pink Diamonds Fernleaf Bleeding Heart in well-drained, fertile soil with partial to full shade. Space plants about 12-18 inches apart. Water regularly to keep the soil consistently moist but not waterlogged. Fertilize in early spring with a balanced, slow-release fertilizer. Deadhead spent flowers to encourage continuous blooming. Cut back foliage in late fall after the first frost. Divide clumps every 3-4 years in early spring to maintain vigor.