HYDRANGEA seemannii

Commonly known as Hortensia

Excellent evergreen climber for shade or north wall, flowers white
Further Reading....
  • Evergreen
    Leathery, mid-green leaves to 15cm (6in) long.
  • White
    Greenish-white flowers
  • Height
    10m (33ft)
  • Spread
    5m (26ft)
  • Climber
    Some of these climbing plants will need trellis or wire supports if grown on walls or fences. Other grow aerial roots and are self-clinging
    Woody climber clinging by aerial roots. Flowers in domed corymbs to 15cm (6in) across.
  • 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)
  • Full sun
    Shelter from cold winds
  • Partial shade

HYDRANGEA seemannii

 

 

  • Additional Features
    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
  • Burncoose Specialities
    Hydrangeas
  • Hardiness
    Frost hardy (down to -5)
  • Leaf margin
    Serrulate
    		(see photos above)
  • Leaf shape
    Elliptic
    		(see photos above)
    Lanceolate
    		(see photos above)
  • Pruning group
    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.

    RHS group 9 & 11
  • Seasonal Interest
    Summer
  • Soil Conditions
    Fertile moist well-drained soil
    Humus-rich
  • Toxic - Category C
    May cause skin allergy
    (People & Pets) Maybe harmful to pets if eaten
  • Wildlife
    Rabbit Resistant
Jan
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Hydrangeas - Care Guide
Hydrangeas - Video Spotlights

Useful extras...

Fertilisers & Feeds - Vitax
Q4 Pelleted Fertiliser
A useful fertiliser suitable for use on a wide variety of plants. Q4 provides all the nutrients and trace elements essential for vigorous growth, abundant flowering and ripening of fruit.
3 options from £6.00

Fertilisers & Feeds - Empathy
Rootgrow mycorrhizal fungi
Recommended by the RHS. Contains Rootgrow™ mycorrhizal fungi. Suitable for all trees and shrubs (except rhododendrons, azaleas, heathers, cranberries and blueberries)
2 options from £6.00

Fertilisers & Feeds - Empathy
All-purpose Seaweed Stimulant
All-purpose organic concentrated seaweed feed that is a ready to use, derived from sustainable harvested kelp, that can be used on all outdoor and indoor plants, except acid loving plants. Perfect used in conjunction with Rootgrow™.
Only £7.50

Fertilisers & Feeds - Vitax
Hydrangea Colourant
For changing pink hydrangea flowers to blue, or making blue flowers darker. If your soil is alkaline the proportions should be doubled.
Only £6.50

Garden Goodies
Slate Plant Labels
These wonderfully tactile natural slate plant labels are hand made in Cornwall and come with a chalk pen. Just stick them in your pot or border. Pack of 6.
Only £10.20

Garden Goodies
Slate Tie-on Plant Labels
Hand made in Cornwall, these delightful natural slate labels are perfect for pots. Comes with chalk pen. Pack of 5
Only £10.20

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