Pinus strobus 'Radiata'

RHS Plant Profile

Weymouth pine 'Radiata'

Conifers

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A compact, slow-growing conifer up to 70cm tall after ten years of growth before eventually reaching up to 4m in height if left unpruned. Young plants are rounded in shape before becoming more conical with age and have silvery, blue-green needles arranged in groups of five

Position

Full sun

Soil Types

Loam, Sand

Max Height

2.5-4 metres

Max Spread

2.5-4 metres

Size

Time to Maturity: 20–50 years
Max Spread: 2.5-4 metres
Max Height: 2.5-4 metres

Growing Conditions

Loam Sand

Moisture: Well–drained
pH: Acid or Alkaline or Neutral

Position

Full sun

Aspect: East–facing or North–facing or South–facing or West–facing
Exposure: Exposed or Sheltered
Hardiness

Hardiness Ratings

All ratings refer to the UK growing conditions unless otherwise stated. Minimum temperature ranges (in degrees C) are shown in brackets

H1A: under glass all year (>15C)
H1B: can be grown outside in the summer (10 - 15)
H1C: can be grown outside in the summer (5 - 10)
H2: tolerant of low temperatures, but not surviving being frozen (1 to 5)
H3: hardy in coastal and relatively mild parts of the UK (-5 to 1)
H4: hardy through most of the UK (-10 to -5)
H5: hardy in most places throughout the UK even in severe winters (-15 to -10)
H6: hardy in all of UK and northern Europe (-20 to -15)
H7: hardy in the severest European continental climates (< -20): H7
Drought Resistance: Yes

Colour & Scent

Season	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family: Pinaceae
Native to GB/Ireland: No
Foliage: Evergreen
Habit: Bushy
Genus: Pinus can be shrubs or large, evergreen trees, some species with attractive bark, developing an irregular outline with age and bearing long needle-like leaves in bundles of 2, 3 or 5; conspicuous cones may fall or remain on the tree for years
Name Status: Accepted

How to Grow

Cultivation

Grow in a well-drained soil in full sun

Propagation

Propagate by seed

Suggested planting locations and garden types

Coastal
Patio and container plants
Low Maintenance

Pruning

Generally no pruning required; however, to maintain the rounded, compact form, remove the central leader as it begins to develop

Pests

May be susceptible to adelgids, aphids, pine sawfly and pine shoot moth

Diseases

May be susceptible to honey fungus and needle cast diseases