Rhododendron Blue Pool

Rhododendron Blue Pool


unavailable Currently Unavailable

Flowering Month:
Flower Colour:
Purple & Blue
Height After 10 Years:
Not Scented
Interesting Foliage:
To -20 °C
Currently Unavailable
email me when in stock
3 litre
Currently Unavailable
email me when in stock
7.5 litre
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Wonderful funnel-shaped light lavender blue flowers in April - May. This plant has attractive lettuce green leaves in the summer. A slow-growing, dense and compact mounded bush. Height 80-100cm in 10 years, but getting larger in time.

  • Recommended for front of borders, small gardens and raised beds.
  • Easy to grow.
  • Ideal position: most garden situations but avoid too much heat.
  • Habit: dense and compact.
  • Group: Rhododendron hybrid.
  • Parentage: 'Sapphire' X augustinii.
  • Hybridization date: pre 2000 (1966)
  • Bred by Waterer Nurseries (Knaphill). Origin: British
  • Ideal soil: pH 4.5 to 6.0
  • RHS Hardiness Rating: H6
  • How we usually propagate this plant: Cutting.

Customer Reviews

By on
"Beautiful plant, well packaged and cared for when it anrrived, and even more blue than the pictures. Growing really well and could not be happier with my purchase."
Star Rating 5
By on
"Easy to use website, huge variety of plants available: I bought a rhododendron 'Blue Pool'. It arrived in excellent condition and has thrived since. I am more than happy and will be using Millais Nurseries again!"
Star Rating 5
By on
"As ever perfectly beautiful plant, well packed ,swift and kind service, thank you so much. "
Star Rating 5
By on
"Arrived excellent condition perfect plant"
Star Rating 5
By on
"I bought several shrubs from different retailers at the same time and the rhododendrons from Millais stand out prominently. They are clearly the healthiest, strongest and most vibrant and I couldn’t be happier with the quality. They were an excellent size for the price and have already shown considerable growth. The packaging and service was faultless. Thank you. "
Star Rating 5
By on
"Plant arrived in excellent condition and looks very healthy. Will definitely use this company again. "
Star Rating 5
By on
"A good sized, healthy, well shaped plant."
Star Rating 5
By on
"Lovely plant in good condition. Arrived very quickly."
Star Rating 5

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.


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

Delivery & Returns

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