Hydrangeas in the Landscape: Color Control, Varieties, and Care

Hydrangeas deliver showstopping blooms and foliage with minimal fuss—if sited correctly. The magic: soil pH shifts flower color (blue <5.5, pink >6.5) via aluminum availability.

Bigleaf Hydrangea (H. macrophylla)

Shade/part-shade star. Ball-shaped mopheads or lacecaps. Established plants grow vigorously—summer pruning contains size. Air-dried flowers last months indoors.

Color Manipulation

Blue: aluminum sulfate lowers pH. Pink: lime raises pH. Some cultivars resist change. Test soil annually. Container culture offers total control.

Climbing Hydrangea (H. anomala petiolaris)

Slow-starting vine; patience rewarded with 50+ ft coverage via holdfasts. Fragrant white lacecaps (5"+) in early summer. Exfoliating bark = winter interest. Shade-tolerant; more sun = more bloom. Moist, humus-rich soil essential.

Design Uses

Woodland gardens, north foundations, shaded patios, arbor covers, fence softening. Reliable, long-lived, four-season appeal. A landscape staple for temperate gardens.