Rhododendron davidsonianum AGM EGM 149

Masses of pink to white flowers with a striking crimson blotch. It is paler in sun than shade. Very free flowering in April - May and is an absolute stunner! Height 120cm in 10 years.
You will note that the collector seed number appears in the name of this plant. This identifies where the plant was collected from, when and by whom. Plant collectors carefully document where they find their seeds and this is of particular interest to Rhododendron enthusiasts. The seeds of this plant were collected by the late Ted Millais.

• Recommended for striking flower.
• Easy to grow.
• Ideal position: most garden situations.
• Habit: upright.
• Group: Small Leaved Rhododendron.
• Subsection: Triflora.
• Introduction date: pre 1958 (1904).
• Species distribution: W & SW Sichuan, NW Yunnan.
• Approximate altitude: 2,000-3,580m
• Ideal soil: pH 4.5 to 6.0
• RHS Hardiness Rating: H5.
• How we usually propagate this plant: Cutting.
• Awards: RHS Award of Garden Merit.

Customer Reviews

By Edward Westhead on 20th February 2023

"A very nice specimen. "

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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