Species & Cultivars
- Arborescens 17
- Aspera 17
- Climbing Hydrangeas 0
  - Anomala 2
  - Seemanii 1
  - Serratifolia 0
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- Heteromalla 8
- Hydrangea Hybrids 1
- Involucrata 14
- Macrophylla Lacecaps 91
- Macrophylla Mopheads 171
- News 114
- Other Hydrangeas 1
  - Hirta 1
  - Lesser known Species 1
  - Scandens 3
- Paniculata 183
- Quercifolia 16
- Serrata 54

serrata ‘Hallasan’

Synonyms:

Origins:

Awards:

Height & Width:

Fertile flowers deep blue. Sterile florets white-blue on alkaline soil, but a deep blue on acid soil

Gardens found in the 28 pre 2000 surveyed:

Gardens found in the 10 surveyed in 2010: LHS ESV NAN AW

UKPlant Finder: 2012 = 2 + 1 nurseries

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