AGM
Evergreen Azalea Blue Danube  AGM

Evergreen Azalea Blue Danube AGM

Item: ABLUE

unavailable Unavailable

Flowering Month:
May
Flower Colour:
Mauve/Blue
Hardiness:
Below -20 °C
Height After 10 Years:
50-75cm
Scent:
Not Scented
Interesting Foliage:
No
Please select size option:

If your preferred size is out of stock, click "email me when in stock" to be notified as soon as it becomes available.

add to wish list
updown
Collect in Store

This item is available for collection.

Home Delivery

UK mainland delivery from £8.95

With intense large violet blue flowers, with deeper purple red spotting this lovely old variety is very hardy. Flowering in May, it has an upright spreading habit with flowers approximately 40-45mm wide. Height 60-80cm in 10 years.


  • Ideal for containers, small gardens and mixed borders.
  • Easy to grow.
  • Group:Evergreen Azalea (kaempferi hybrid).
  • Parentage: 'Malvaticum' X kaempferi
  • Hybridization date: pre 2000 (1965).
  • Bred by: A.van Hecke. Origin: Belgium.
  • Habit: Upright, spreading.
  • Ideal position: Most garden situations.
  • Ideal soil: pH 4.5 to 6.
  • RHS Hardiness Rating: H6.
  • How we usually propagate this plant: Cutting.
  • Awards: RHS Award of Garden Merit.



Customer Reviews

By on
"This is providing a stunning display but unfortunately, the colour clashes with our red front door so I will have to move it later on this year"
Star Rating 5
By on
"Received this plant whilst restrictions and added measures were in place. The plant was received in quick time and packaged to a very high standard. The plant was healthy and just starting to flower. Planted within 3 days and had gorgeous blue flowers around my garden pond for the last 3/4 weeks. Will soon lose flowers but looking forward to next year."
Star Rating 5
By on
"Received this plant whilst restrictions and added measures were in place. The plant was received in quick time and packaged to a very high standard. The plant was healthy and just starting to flower. Planted within 3 days and had gorgeous blue flowers around my garden pond for the last 3/4 weeks. Will soon lose flowers but looking forward to next year."
Star Rating 5
By on
"Purchased as a gift for my son. He is delighted with the size and excellent quality of the plant, which arrived in very good condition."
Star Rating 5
By on
"Arrived in great condition and is now flowering."
Star Rating 5
By on
"I ordered 4 plants. They all arrived promptly and in excellent condition. They are all now beautifully in flower in pots on my patio. "
Star Rating 5
By on
"It arrived looking very healthy and I planted in a container with ericaceous compost."
Star Rating 4
By on
"I ordered 9 different rhododendrons to fill a bed that was a pond. they all arrived in perfect condition with all their buds on ... non fallen off. I was quite nervous to order so many plants.... they are perfect I can't wait until spring to see them in flower. I would definitely order again. "
Star Rating 5
By on
"I was delighted with the plants and am looking forward to seeing them in bloom next May"
Star Rating 5
By on
"Very good traders plants are first class ,delivery very quick and can track so you know exactly when you will get them."
Star Rating 5

Good to know

From a botanical point of view, evergreen azaleas are part of the rhododendron family, but typically they only have 5-7 stamens in the flowers instead of 11-13 stamens present in other rhododendrons. Evergreen azaleas, sometimes known as Japanese azaleas, are as popular as ever, and are ideal for any size of garden from a window box to a large estate. Most azaleas grow to 60-75 cm in 10 years, but look out for our speciality nakaharae azaleas which are late flowering, prostrate, and excellent for cascading over walls or tubs.

Some of the first evergreen azaleas were introduced by Ernest Wilson (Wilson’s 50) from Japan at the beginning of the twentieth century. These small flowered varieties are full of character, best seen at the Isabella Plantation in Richmond Park where they look delightful. However, these early plants are not as hardy as modern varieties such as those bred in Northern Germany. Other breeders, particularly in America, have concentrated on breeding larger flowers which can certainly look impressive. Our range should not be compared to the R. indica types which are sold as houseplants and are not fully hardy outside.

All require good moist ericaceous soil with a high organic content. For a guide to plant spacing, use the height we give in 10 years as a guide to the distance between each plant, or approximately 3 plants per m². Plant no deeper than the top of the rootball, and dig in plenty of good ericaceous compost around the sides.  A teaspoon of slow release feed is sufficient for a 3 litre plant, rising to a small handful for a mature plant.  Evergreen azaleas are suitable for growing in pots and containers; re-pot every 3 years for best performance.


Please note:Rabbits and deer like the soft new growth of evergreen azaleas, so netting protection may be necessary some years.

 

For further advice, For further advice, see here

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

Size Guide

Size guide

Delivery & Returns

Our website calculates the delivery charge according to weight and delivery location throughout Europe. To see these charges, please enter your postcode and country at the checkout, and you will see the charge vary as you add more items to your wheelbarrow.

***Please note we do not deliver outside of EU***

Please see here for delivery information

Please see here for cancellation and return information