Hydrangea 'Blue Billow' Overview
- Hardiness Zone: 5-9
- Height: 4 ft
- Spread: 5 ft
- Bloom Color: Blue
- Lacecap bloom type
- Light blue florets surround dark, rich blue fertile flowers in the center
- Mid summer bloom time
- Blooms on old wood
- Mounding habit
- Morning sun and afternoon shade preferred