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HYDRANGEA serrata 'Kiyosumi'
Commonly known as Hortensia

Pinkish-white flowers with white florets tinged and edged red
Full Plant Details - Sun/Soil & other attributes - Click to close
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Floweringlocal_floristJanlocal_floristFeblocal_floristMarlocal_floristAprlocal_floristMaylocal_floristJunlocal_floristJullocal_floristAuglocal_floristSeplocal_floristOctlocal_floristNovlocal_floristDec
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Good to know
Originally found in the wild in Japan -
Pests & Diseases
Red spider mites, scale insects, vine weevils, capsid bugs, grey mould(Botrytis), Hydrangea virus, powdery mildew, leaf spot, honey fungus -
Place of origin
Korea, Japan -
Hydrangeas
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DeciduousNarrowly ovate, pointed leaves to 15cm (6in) long, chocolate-coloured when young
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White
Pinkish white -
Lacecap
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BorderSuitable for a shrub or mixed border
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Suitable for small gardens
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Fully hardy
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Serrate
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Ovate
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Height
1.2m (4ft) -
Spread
1.2m (4ft) -
Medium shrubTypically grow to around 4-6 feet in heightCompact, erect shrub. Produces fertile and sterile flowers in flattened corymbs 5-10cm (2-4in) across
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Pruning group 3
Suitable for: Deciduous shrubs that flower in the Summer or Autumn on previous year's growth, or deciduous shrubs that flower in late Winter-Spring on previous year's growth.
Pruning: Trim off old flowers to the first bud beneath flower head. Cut back 1/3 of the oldest stems to promote replacement growth.
When: Annually
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Hardy - average winter
Hardy through most of the UK apart from inland valleys, at altitude and central/northerly locations. May suffer foliage damage and stem dieback in harsh winters in cold gardens. Plant can withstand temperatures down to -10°C (14°F) -
Autumn Seasonal Interest
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Summer Seasonal Interest
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Fertile moist well-drained soilModerately fertile. Humus-rich.
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Full sun
Shelter from cold, drying winds -
Partial shade
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harmful if eaten
Pets, i.e. cats, dogs, rabbits, rodents, notably dogs and cats -
may cause skin allergy
People -
Rabbit Resistant
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Mature Size1.2m (4ft)
1.2m (4ft)
View Detailed Plant Description
View Planting Tips and Care Advice
Hydrangeas - Care Guide
- Hydrangeas for everyone!
- Quick tour of hydrangea stocked - Video Tip ondemand_video
- Soil & Feeding
- Pruning Hydrangeas
- Pruning Hydrangeas - Video Tip ondemand_video
- Hydrangeas, keeping them blue - Video Tip ondemand_video
- Propagation
- Drying Flower Heads
- Drying hydrangea flower heads - Video Tip ondemand_video
- Popular Mopheads & Lacecaps
- Hydrangeas and other plants
- Further Reading
Hydrangeas - Video Spotlights
- Five varieties of Hydrangea - Video Tip ondemand_video
- 7 Varieties of Hydrangea paniculata in August - Video Tip ondemand_video
- Hydrangea 'Lanarth White' - Video Tip ondemand_video
- Hydrangea serrata - Video Tip ondemand_video
- Hydrangea seemanii - Video Tip ondemand_video
- June Hydrangea Stock 2022 - Video Tip ondemand_video
View Planting Combinations
