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Rhododendron ungernii Rachel Foster

Item: SUNGRF

unavailable Unavailable

Flowering Month:
Summer
Flower Colour:
Pinky/Mauve
Hardiness:
To -15 °C
Height After 10 Years:
125-150cm
Scent:
Not Scented
Interesting Foliage:
Yes

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**** New, to be launched at Chelsea Flower SHow 2019. Available Autumn 2019****

(H5) Pale pink bell shaped flowers in a domed truss, flushed purplish pink towards wavy edged lobes. Late flowering July to August, so best in light dappled shade to preserve blooms. Dense dark green foliage with fawn indumentum. Height 125-150cm in 10 years. Requires moist acid soils.

Trusses smaller than usual for this species, with smaller and darker stamens and style.

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 varieties. Avoid waterlogged sites.

Pruning

Not normally required. Tidy wayward shoots after flowering. Evergreen azaleas and Bloombux can be clipped into a low hedge.

Deadheading

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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