Hydrangea seemannii
Seemann's hydrangea
H. seemanii is a woody, evergreen climber with aerial roots and leathery leaves up to 15cm long. Domed flower-heads, composed of greenish-white, fertile flowers surrounded by white bracts, appear in summer
Size
Ultimate height
8–12 metresTime to ultimate height
10–20 yearsUltimate spread
2.5–4 metresGrowing conditions
Moisture
Moist but well–drainedpH
Acid, Alkaline, NeutralColour & scent
| Stem | Flower | Foliage | Fruit | |
| Spring | Green | |||
|---|---|---|---|---|
| Summer | White | Green | ||
| Autumn | Green | |||
| Winter | Green |
Position
- Full shade
- Full sun
- Partial shade
Aspect
South–facing or North–facing or West–facing or East–facing
Exposure
Sheltered Hardiness
H4Botanical details
- Family
- Hydrangeaceae
- Native to the UK
- No
- Foliage
- Evergreen
- Habit
- Climbing
- Potentially harmful
- May cause mild stomach upset if ingested, contact with foliage may aggravate skin allergies. Wear gloves and other protective equipment when handling
- Genus
Hydrangea can be deciduous or evergreen shrubs, or self-clinging climbers, with flowers in clusters usually comprising both small fertile and more showy sterile flowers; often good autumn colour
- Name status
Correct
- Plant range
- Mexico
How to grow
Cultivation
Grow in sun or shade, in a moist but well-drained soil enriched with well-rotted organic matter. Will only tolerate a few degrees of frost
Propagation
Propagate by layering
Suggested planting locations and garden types
- City and courtyard gardens
- Cottage and informal garden
- Low Maintenance
- Wall side borders
Pruning
Pruning group 11 after flowering
Pests
Can get aphids, capsid bug, glasshouse red spider mite and hydrangea scale
Diseases
Generally disease free
Get involved
The Royal Horticultural Society is the UK’s leading gardening charity. We aim to enrich everyone’s life through plants, and make the UK a greener and more beautiful place.