Otaksa bigleaf hydrangea
Hydrangea macrophylla 'Otaksa'
USDA zones6 to 9
SunHandles partial sun to full shade
WaterHandles moderate or wet soil
Size2 to 3 feet tall2 to 4 feet wide
- Growth rate
- Rapid
- Habit
- Mounding
- Bloom season
- Summer
- 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
'Otaksa' bigleaf hydrangea (Hydrangea macrophylla 'Otaksa') is a shrub for borders, cottage gardens, specimen planting, and shade gardens. It is hardy to USDA zone 6, or down to -10°F (-23°C). This plant likes part sun to full shade and average to wet, sandy, loamy, or clay soil. It forms a mounding shrub with blue flowers from early to late summer. Acidic soil with a pH of 4.5 to 5.5 keeps the blooms blue. Deer tend to browse other plants first.
Pairs well with Abiqua Drinking Gourd hosta, Aureola Japanese forest grass, and Lady fern.