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Conservatory GreenhouseClimber Wall Shrub

Gelsemium rankinii

A vigorous twining evergreen perennial to up to 6m, with slender twining stems bearing glossy green narrowly ovate leaves and small clusters of funnel-shaped, bright yellow flowers marked with orange in throat

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Size
Ultimate height
4–8 metres
Time to ultimate height
5–10 years
Ultimate spread
1.5–2.5 metres
Growing conditions
Chalk
Clay
Loam
Sand
Moisture
Moist but well–drained
pH
Acid, Alkaline, Neutral
Colour & scent
StemFlowerFoliageFruit
Spring Green
Summer Yellow Orange Green
Autumn Green
Winter Green
Position
  • Full sun
  • Partial shade
Aspect

South–facing or East–facing

Exposure
Sheltered
Hardiness
H3
Botanical details
Family
Gelsemiaceae
Native to the UK
No
Foliage
Evergreen
Habit
Climbing
Potentially harmful
Harmful if eaten. Wear gloves and other protective equipment when handling
Genus

Gelsemium are twining evergreen perennials with simple, paired leaves and fragrant, funnel-shaped flowers that maybe solitary or in small clusters in spring and summer

Name status

Correct

Plant range
USA

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How to grow

Cultivation

Grow under glass in a loam based potting compost in full or bright filtered light with shade from hot sun. Water freely when in growth applying a balanced liquid fertiliser monthly. Water sparingly in winter. Can be grown outdoors in milder areas in most moderately fertile soils but will require protection from cold drying winds

Propagation

Propagate by seed sown at 13 to 18°C in spring or take semi-hardwood cuttings with bottom heat in summer

Suggested planting locations and garden types
  • City and courtyard gardens
  • Climber and wall shrubs
  • Conservatory and greenhouse
  • Wall side borders
Pruning

Pruning group 12, after flowering

Pests

May be susceptible to glasshouse whitefly

Diseases

Generally disease-free

Get involved

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