Perennials and shrubs fill, soften or add piquancy to every niche in Kate and Rick Poole’s Bellevue garden. A sourwood’s white blooms contrast with the red hips of a tall rose (Rosa rubrifolia) on a late-summer day by the front door. Geranium trails through neighboring salvias and sedums, and buddleia “Honeycomb” gilds a corner gate.…
