Plants by mail order since 1984, over 4100 plants online today!
HYDRANGEA seemannii
Commonly known as Hortensia
Excellent evergreen climber for shade or north wall, flowers white
Further Reading....
- Details
- Description
- Tips and Advice
- Goes Well With
- Planting Combinations
- Other Suggestions
- See Also...
-
Evergreen - elliptic to lance-shaped, 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 -
Harmful if eaten - These will give you an upset tummy, so please don't eat any of these. -
May cause skin allergy or irritant - Having skin or eye contact with these plants could result in an allergic reaction, burning or rash.
-
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 -
Hardiness - Frost hardy (down to -5) -
-
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
-
Wildlife - Rabbit Resistant -
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Hydrangeas - Care Guide
- Hydrangeas for everyone!
- 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
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
Share this page
