Designing with Large Perennials: Back-of-Border Architecture

Large perennials (3-7+ ft) define garden structure. Cool colors back (blue iris, lavender clematis) → space expands. Warm colors forward (red daylilies, oriental poppies) → drama, intimacy. Watch spread: cover ground, not create jungles. Step down: middle 12-18", front 6".

Shade-Back Solutions

Part-shade backdrops: Astilbe 'Fanal' (deep red feathers). Sun-tolerant: Daylily 'Mary Todd' (butter-cream, 2+ ft, adaptable). Every large perennial earns its space through presence, season length, and compatibility with neighbors.