Rhododendron Kali

Rhododendron Kali


in stock In stock

Flowering Month:
Flower Colour:
Purple, Red
To -15 °C
Height After 10 Years:
Not Scented
Interesting Foliage:
7.5 litreAvailable stock: 11
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(H5) NEW! Dark red in bud, opening to purplish red flowers and shading out to dark red at the margins, with dense darker speckling on the upper lobe and vivid yellowish white anthers. Flowering in late May. Height 150-175cm in 10 years. 

This has been bred by noted German Kalmia breeder Dr. Karl Hübbers, who has been visiting our nursery since the 1980's. We rate this plant highly for its deep glowing colour combined with its cold tolerance.

• Recommended for: Tough variety. Hedging and Screening.
• Ideal position: Dappled shade in most garden situations.
• Habit: Bushy.
• Group: Hardy Hybrid.
• Parentage: ‘Nova Zembla’ (s) X ‘Rubicon’
• Hybridisation date: pre 2000 (1993)
• Bred by: K.-H. Hübbers. Origin: Kranenburg, Germany.
• Ideal soil: pH 4.5 to 6.
• RHS Hardiness Rating: H5.
• How we usually propagate this plant: Graft.

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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.


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.


  • 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.


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


Recommended every few years.


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.


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


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.


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

For further advice see here

Size Guide

Size guide

Delivery & Returns

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