Overview

Rhododendron tomentosum is a bushy shrubs in the genus Rhododendron, part of the Ericaceae family, with evergreen foliage. Rhododendron tomentosum grows best in partial shade, and tolerates loam soils and acid pH. Its UK hardiness is rated H5. Suggested uses include woodland gardens and containers on shaded patios.

About

Rhododendron tomentosum, commonly known as wild rosemary or Labrador tea, is a bushy evergreen shrub within the Rhododendron genus, which includes both evergreen and deciduous shrubs or trees. This cultivar thrives in acidic, moist but well-drained loam soils, ideally in sheltered, dappled shade with an east or west-facing aspect. It is hardy to UK zone H5 and is suitable for woodland gardens or containers on shaded patios. Interest in this plant spans both spring and winter seasons, reflecting its year-round appeal.

Growing conditions

Best soil and position for Rhododendron

Sunlight
Partial shade
Soil type
Loam
Soil pH
Acid
Soil moisture
Moist but well-drained
Aspect
East-facing, West-facing
Exposure
Sheltered
UK hardiness
H5

Plant details

Rhododendron tomentosum size, habit and characteristics

Plant type
Shrubs
Habit
Bushy
Foliage
Evergreen
Suggested uses
Woodland gardens, Containers on shaded patios

Care notes

Pruning and caring for Rhododendron tomentosum

Propagation
Semi-ripe cuttings, Layering, Grafting
Pest resistance
Vine weevil, Rhododendron leafhopper, Pieris lacebug, Scale insects, Caterpillars, Aphids
Disease resistance
Powdery mildews, Rhododendron petal blight, Rhododendron bud blast, Silver leaf, Honey fungus

Frequently asked questions

Where is the best place to plant Rhododendron tomentosum?

Rhododendron tomentosum prefers partial shade. It suits sheltered positions.

What soil does Rhododendron tomentosum need?

Rhododendron tomentosum grows best in loam soil. It prefers acid soil. Aim for soil that stays moist but well-drained.

Is Rhododendron tomentosum hardy in the UK?

Rhododendron tomentosum has an RHS hardiness rating of H5, meaning it is hardy in most of the UK, tolerating -15 to -10°C.

How do I propagate Rhododendron tomentosum?

Semi-ripe cuttings, Layering, Grafting.

More in the Rhododendron genus

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