Rhythmic Blue bigleaf hydrangea
Hydrangea macrophylla 'Rhythmic Blue'
USDA zones5 to 9
SunHandles partial sun to full shade
WaterHandles moderate or wet soil
Sizeup to 4 feet tallup to 4 feet wide
- Growth rate
- Rapid
- Habit
- Mounding
- Bloom season
- Summer, autumn
- Bloom color
- Blue
- Foliage color
- Green
- Soil types
- Sand, loam, clay
- Soil pH
- Acidic for blue flowers (pH 4.5-5.5)
- Toxicity
- Toxic to dogs, toxic to cats, toxic to horses
Garden uses
Notes
'Rhythmic Blue' bigleaf hydrangea (Hydrangea macrophylla 'Rhythmic Blue') is a shrub for borders, cut flowers, specimens, and shade gardens. It is hardy to USDA zone 5, or down to -20°F (-29°C). This plant likes part sun to full shade and average to wet, sandy, loamy, or clay soil. Blue flowers open from early to late summer and again in early autumn, and acidic soil with a pH of 4.5 to 5.5 keeps the blooms blue. Deer usually look elsewhere for a meal.
Pairs well with Autumn fern, Liberty hosta, Lenten rose, and Sedge.