Plant Leading Lady Plum Bee Balm in well-drained soil with full sun to partial shade. Space plants 18-24 inches apart. Water regularly, keeping the soil consistently moist but not waterlogged. Fertilize in early spring with a balanced, slow-release fertilizer. Deadhead spent blooms to encourage continuous flowering. Divide clumps every 2-3 years in early spring to maintain vigor. Protect from powdery mildew by ensuring good air circulation.