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HYDRANGEA seemannii
Commonly known as Hortensia
Excellent evergreen climber for shade or north wall, flowers white
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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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
Mexico -
Hydrangeas
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EvergreenLeathery, mid-green leaves to 15cm (6in) long.
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White
Greenish-white flowers -
Frost hardy (down to -5)
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Serrulate
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Elliptic
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Lanceolate
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Height
10m (33ft) -
Spread
5m (26ft) -
ClimberSome of these climbing plants will need trellis or wire supports if grown on walls or fences. Other grow aerial roots and are self-clingingWoody climber clinging by aerial roots. Flowers in domed corymbs to 15cm (6in) across.
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Pruning group 6
Suitable for: Evergreen shrubs or climbers that need little to no pruning.
Action: Trim back shoots that spoil symmetry and to fit available space.
When: Annually after flowering if on previous year's growth, or in later Winter or Spring if flowering on current year's growth, or as requires.
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Half hardy - unheated greenhouse / mild winter
Hardy in coastal and relatively mild parts of the UK except in severe winters and a risk from sudden (early) frosts. May be hardy elsewhere with wall shelter or good micro-climate. Likely to be damaged or killed in cold winters. Plant can withstand temperatures down to -5°C (23°F) -
Summer Seasonal Interest
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Fertile moist well-drained soilHumus-rich
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Full sun
Shelter from cold 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
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