Rhododendron keysii

Rhododendron keysii

Item: SKEYS

unavailable Currently Unavailable

Flowering Month:
June-July
Flower Colour:
Orange
Height After 10 Years:
125-150cm
Scent:
Not Scented
Interesting Foliage:
No
Hardiness:
To -15 °C
Currently Unavailable
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3 litre
£21.95
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Dense clusters of stunning narrow tubular bicolored flowers in shades of deep red, salmon, orange and yellow. This is a very distinctive flowering plant for June-July, with thinly textured leaves and strong and upright habit. Best planted in partial shade, and it does need an open situation to allow lots of air circulation to perform well. Height 125cm in 10 years.

  • Recommended for stunning late flowers. 
  • Plantsman range. 
  • Ideal position: needs careful site selection. 
  • Habit: upright. 
  • Group: Small Leaved Rhododendron. 
  • Subsection: Cinnabarina. 
  • Introduction date: pre 1900 (1851). 
  • Species distribution: Bhutan, Assam, S & SE Tibet. 
  • Approximate altitude: 2,450-3,650m 
  • Ideal soil: pH 4.5 to 6. 
  • RHS Hardiness Rating: H5. 
  • How we usually propagate this plant: Cutting. 

Size Guide

Size guide

The Basics

Ideal soil

Acidic soil, good organic content, pH 4.5-6.0. Inkarho range of rhododendrons will tolerate soils up to pH7.5

Sun or Shade

Light dappled shade is best for most varieties.

Shelter

Refer to hardiness rating. Give young plants protection.

Site Selection

Avoid close to trees, roots, invasive weeds, walls, hot patios, dry banks and waterlogged soils. Do not use weed matting or stone mulch.

Plant spacing

Use the height shown in 10 years as a guide to the distance between each plant. Allow room for plant to fill out. If planting closer for instant impact, be prepared to move plants after a few years.

Compost

  • 3 litre pot, dig in 10-20 litres of ericaceous compost.
  • 7.5 litre pot, dig in 20-30 litres of ericaceous compost.
  • 70-80cm specimen, dig in 60 litres of ericaceous compost.
  • 100-120cm specimen, dig in 120 litres of ericaceous compost.

Planting depth

Plant high in the ground, with the top of the rootball visible.

Feeding

Slow-release ericaceous feed recommended in March and straight after flowering.

Mulch

Recommended every few years.

Water

The key ingredient! Keep moist all season, especially the critical time at end of June for flower bud initiation. Tap water is better than no water. Heavy dose at least once per week in dry weather.

Drainage

Ensure good drainage in winter, especially with yellow flowering varieties. Avoid waterlogged sites.

Pruning

Rhododendrons and Camellias: Not normally required. Tidy wayward shoots after flowering.

Evergreen azaleas and Bloombux can be clipped into a low hedge.

Magnolias and Acers: Formative pruning when young to shape into a tree or bush.

Deadheading

Remove old flower-heads, particularly on young or weak plants.

For further advice see here

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