Rhododendron parmulatum  KW 5876

Rhododendron parmulatum KW 5876

Item: SPARM KW

in stock In stock

Flowering Month:
April-May
Flower Colour:
Cream
Hardiness:
To -15 °C
Height After 10 Years:
25-50cm
Scent:
Not Scented
Interesting Foliage:
No
Choose Size:
£23.95

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An interesting plant that varies in flower from white, yellow or red, sometimes bicolour and heavily spotted. Flowering anytime from March to May it has distinctive rugulose (wrickled) leaves. A rare species for the collector, which requires careful growing. Height 40cm in 10 years.

It dislikes fertilizer and will scorch easily.

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 Frank Kingdon Ward.

  • Recommended for early flower and interesting foliage.
  • Plantsmans range.
  • Ideal position: needs careful site selection and good drainage.
  • Habit: upright.
  • Group: Species Rhododendron.
  • Subsection: Neriiflora.
  • Introduction date: pre 1950 (1924).
  • Species distribution: SE Tibet.
  • Approximate altitude: 3,400 to 4,300m.
  • Ideal soil: pH 4.5 to 6.0
  • RHS Hardiness Rating: H5.
  • How we usually propagate this plant: Cuttings. 

Good to know

Species Rhododendrons often have wonderful foliage, but are fairly specialist and are best grown by more experienced gardeners.

These are the plants which were discovered by plant collectors, growing in the wild in the Himalayas and other mountain regions of the world. Being species they do not have the ‘hybrid vigour’ of named varieties, but they often do have great character and interest in flower and foliage. We pride ourselves in one of the best ranges of rhododendron species in the country, and we try to propagate these from recognised good forms. These may be identified by the original plant collector’s seed number, (eg R. denudatum EGM 294) or by a clonal name given to a selected plant (eg R. degronianum ‘Ho Emma’). Many new species rhododendrons have been introduced in the last 25 years, and many are well worth growing for their foliage alone!  

Rhododendrons like moist acidic soil, with good drainage, and plenty of organic matter such as leaf-mould and added ericaceous compost. Species should be given the best planting positions, which are neither too wet nor too dry. Yellow varieties need especially good drainage. For a guide to plant spacing, use the height we give in 10 years as a guide to the distance between each plant. Plant no deeper than the top of the rootball, and dig in plenty of good ericaceous compost around the sides. Most species require very little fertilizer and half a teaspoon of slow release feed is sufficient for a 3 litre plant, rising to a tablespoonful for a mature plant. Those in the taliensia and neriiflora subsections are particularly salt-sensitive, and should only be fed with a mulch. Most species in this section are not troubled by deer and rabbits.


Please note: It can take a number of years before some species start to flower, but often you can enjoy some lovely foliage while you are waiting. Flower colour of species can vary considerably from one clone to the next. eg R. campanulatum can flower from white to pink or deep lilac, and R. arboreum flowers from red to pink to white depending upon the elevation collected. Typically, species are not recommended for growing in pots, as it is too difficult to provide the necessary care that they need.



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 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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