Overview

Rhododendron tomentosum subsp. subarcticum is a bushy shrubs in the genus Rhododendron, part of the Ericaceae family, with evergreen foliage. Rhododendron tomentosum subsp. subarcticum 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 marsh Labrador tea, northern Labrador tea, marsh rosemary or wild rosemary, is a flowering plant in the subsection Ledum of the large genus Rhododendron in the family Ericaceae.

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 subsp. subarcticum 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 subsp. subarcticum

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 subsp. subarcticum?

Rhododendron tomentosum subsp. subarcticum prefers partial shade. It suits sheltered positions.

What soil does Rhododendron tomentosum subsp. subarcticum need?

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

Is Rhododendron tomentosum subsp. subarcticum hardy in the UK?

Rhododendron tomentosum subsp. subarcticum 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 subsp. subarcticum?

Semi-ripe cuttings, Layering, Grafting.

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