Rhododendron dauricum 'Hokkaido'

Rhododendron dauricum 'Hokkaido'

Item: SDAUHOK

unavailable Currently Unavailable

Flowering Month:
Jan-Mar
Flower Colour:
White & Cream
Height After 10 Years:
100-125cm
Scent:
Not Scented
Interesting Foliage:
Yes
Hardiness:
To -20 °C
Currently Unavailable
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3 litre
£21.95
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(RHODORASTRA  H6) Prolific clusters of early white flowers in December and January.  Good copper autumn colour. Leaves are partly deciduous.  Height 100-125cm in 10 years. Requires well drained soil, and shelter when young.
This makes a nice alternative to the better known dauricum 'Midwinter'. Both varietes are difficult to propagate and are always scarce to find.  They can be a little tricky when young and are prone to mildew if kept in a greenhouse, so are really best planted out in a sheltered spot for the first year or so.  After a few years, they develop into very tough plants which are suitable for most locations.

  • Recommended for lovely early flower.
  • Plantsman range.
  • Ideal position: needs careful site selection.
  • Habit: upright.
  • Group: Small Leaved Rhododendron.
  • Subsection: Rhodorastra.
  • Introduction date: for dauricum pre 1900 (1780) and this clone was named by Peter Cox in 1981.
  • Species distribution: dauricum distribution: Russia, Manchuria, NE China, Korea, Japan.
  • Approximate altitude: unknown.
  • Ideal soil: pH 4.5 to 6.0
  • RHS Hardiness Rating: H6.
  • How we usually propagate this plant: Cutting.
  • Awards: AM 1979

 



 

 

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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