Pinus resinosa (Red Pine)


Michael's Opinion

The common name Red Pine is derived from the reddish colour between the fissures of the bark. It is a native tree that can adapt fairly well to different conditions but is not salt tolerant. It does not really possess any stand-out features (other than attractive bark) and therefore is not used in the cultured landscape.

Botanical Information

FamilyPineaceae
GenusPinus
Speciesresinosa
CategoryWoody
TypeTree (evergreen)
Pronunciation

Details

USDA Hardiness Zone2 - 5
USDA Hardiness Ref.
Canadian Hardiness Zone0a - 6a
Canada Hardiness Ref.
RHS Hardiness ZoneH7
RHS Hardiness Ref.
Temperature (°C)-46 - (-26)
Temperature (°F)-50 - (-15)
Height15 - 25 m
Spread2.5 - 6 m
GrowthMedium
Flowering PeriodJune

Description and Growing Information

General DescriptionRed pine is a medium sized evergreen tree with medium to dark green needles that occur in dense turfs at the end of branchlets and a red-brown coloured bark.
ID CharacteristicIt can be identified by the reddish colour of the bark or by bending the needles which will snap cleanly and easily.
ShapeThe crown is conical in young trees, taking on a more narrow oval shape with age.
PropagationIt is easily propagated by seed as they will germinate immediately upon sowing since they have no dormancy.
CultivationIt requires full sun and grows best in a well drained sandy soil with low pH. Known to be cold tolerant, but dislikes intense heat. Not tolerant of salt.
PestsThere are quite a few insects known to feed on Red Pine, but only a few can cause mortality or serious damage. These include sawflies, Saratoga spittlebug, the Zimmerman pine moth and the red pine shoot moth among others.
Notable SpecimensThe French River District, Ontario, Canada.
HabitatAdapted to the colder climates, it can usually be found on sandy and rocky soils at higher altitudes
Bark/Stem DescriptionOn young trees, the bark is orange-red and scaly. The older bark is a red–brown with a bit of silver–grey with thick scaly plates.
Flower/Leaf Bud DescriptionBuds are ovoid or conical, red-brown, approx 1.3 cm long, resinous and with loose scales.
Leaf DescriptionShiny, medium to dark green brittle needles arranged in fascicles of two, 12-18 cm long. Straight or slightly twisted, densely arranged and persisting for 4 years.
Flower DescriptionMonoecious tree. The males are roundish and light red, found in large clusters at the branch tips. The females are short, red–brown cones.
Fruit DescriptionLight brown cone, ovoid in shape, 5 cm long and 3 cm wide found alone or in pairs. Appears in May or early June, matures in early summer in Ontario.
Colour DescriptionThe foliage is medium to dark green all year long. The bark is red–brown
Texture DescriptionMedium.

Photographs