Onyx Peacock Hydrangea
Hydrangea macrophylla ‘Onyx Peacock’
1 gallon pot
 
A truly striking lacecap hydrangea, Onyx Peacock combines deep black-purple stems with elegant blooms featuring rich blue to violet fertile flowers surrounded by showy outer florets in shades of lavender, pink, or blue depending on soil pH. The dramatic dark stems create exceptional contrast against the lush green foliage, giving the plant year-round architectural appeal even before flowering.
 
Part of the Black Diamonds® collection, this cultivar is prized for its unique stem color, refined lacecap blooms, and strong garden presence. It performs best with consistent moisture and protection from hot afternoon sun, making it an outstanding specimen for woodland borders, foundation plantings, and containers. In acidic soils, the flowers develop richer blue tones, while more alkaline soils produce pinker hues.
 
Deciduous shrub
Zones 5–9
Part sun to part shade
Grows 4–5 ft. tall and wide
Moderate water needs; prefers consistently moist, well-drained soil
Deer-resistant
Blooms Jun–Sep