Pinus hartwegii

RHS Plant Profile
Hartweg's pine

Other common names

Mexican mountain pine

Synonyms

Pinus montezumae misapplied
Pinus montezumae var. rudis
Pinus lindleyana
Pinus montezumae var. hartwegii
Pinus rudis

Trees Conifers

A tall growing evergreen pine growing up to 31m (103ft) in height on a long clear straight trunk, capable of reaching 1.2m (4ft) in diameter when mature. Its bark is deeply furrowed and divided into plates and brown to grey in colour. The flattened oval shaped canopy is restricted to the upper parts of the trunk on mature specimens and composed of stiff dark green needles to 20cm (8in) long, usually appearing in groups of five. The cones around 8 cm (3in) long are oval with a tapering tip and appear in whirls of five or six. They are purplish brown when young becoming brown with age and with a black tip to each of the scales.

Position

Full sun

Soil Types

Loam, Sand

Max Height

Higher than 12 metres

Max Spread

wider than 8 metres

Size

Time to Maturity
20–50 years
Max Spread
wider than 8 metres
Max Height
Higher than 12 metres

Growing Conditions

Loam Sand
Moisture
Well–drained
pH
Acid or Neutral

Position

Full sun
Aspect
South–facing or West–facing
Exposure
Exposed or Sheltered
Hardiness
H5
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
Columnar upright
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
Correct
Plant Range
Mexico to Honduras

How to Grow

Cultivation

Grow in well-drained, preferably neutral to acidic soil in full sun

Propagation

Propagate by seed, by semi-ripe cuttings, by hardwood cuttings, or by grafting, see: trees and shrubs from seed

Suggested planting locations and garden types

  • Architectural
  • Cottage and informal garden
  • Low Maintenance

Pruning

No pruning required

Pests

May be susceptible to adelgids, conifer aphid, sawfly larvae, and pine shoot moth

Diseases

May be susceptible to honey fungus and needle cast diseases