Princess flower earns its elevated status with clusters of velvety royal purple blooms, velvety leaves, and regal bearing. More compact than the species, it branches freely with early pinching. Provide a warm protected spot in northern gardens, with a bit of afternoon shade in hot, dry summer areas—it thrives in humid climates. Mulch roots to keep cool and supply regular water and kelp-based fertilizer. Pinch back after the first flush of bloom. Keep over winter, supplying additional humidity, for a repeat show next season.