Pinus serotina


Michael's Opinion

A relatively unpopular Pine tree which is uniquely tolerant of wet soils and forest fires. It is valued for its usefulness in naturalized settings but shunned for its looks. It should be called the Pheonix Pine for its ability to bounce back and propagate after a fire. This tree deserves more attention.

Botanical Information

FamilyPinaceae
GenusPinus
Speciesserotina
OriginEast coast of the United States from New Jersey down to Florida, and inland toward Alabama.
Ethnobotanical Uses
Disclaimer
Pinus serotina has low commercial value because most mature trees are affected by red heart rot, so it is mostly used as pulpwood and sometimes timber. This tree is much more valuable for the ecosystem. Gum Turpentine can be made from the resin. Pinus serotina has no medicinal value.

Details

USDA Hardiness Zone7 - 9
USDA Hardiness Ref.
Canadian Hardiness Zone7 - 10
Canada Hardiness Ref.
RHS Hardiness ZoneH3
RHS Hardiness Ref.
Temperature (°C)(-18) - (-4)
Temperature (°F)0 - 30
Height10 - 12
Spread1 - 2
GrowthMedium
Flowering PeriodApril

Description and Growing Information

General DescriptionThis is a ragged looking Pine tree. It is native to the east coast and thrives where other trees would burn or drown.
ID CharacteristicLong, light green needles in fascicles of 3. Pairs of ovoid cones grow along branches. Red-brown scaly bark.
ShapeDense and conical in its younger days. Becomes tall and topped with irregular branches and foliage when mature.
LandscapePinus serotina is an important part of the ecosystem and should be at the top of the list when considering trees for landscape restoration of the wetlands. It is used as shelter by wildlife. Insects, birds, and mammals; predators and prey; endangered and thriving species have all taken shelter in, on, or under a Pond Pine. This tree is not valued for its looks so unless someone lives in a swamp you are not likely to see it in a garden or a botanical garden.
PropagationPropagated by seeds, cuttings, layering, and grafting. Seeds should be collected during summer. Boil the cones for 20 seconds or until they open. Then, stratify seeds for 30 days at 0.5 - 5?C in a damp medium. Once planted, they will germinate in 2 to 7 weeks at 22?C. Stem-tip, semi-hardwood cuttings from young trees should be collected in late autumn. Rooting will happen in 16-22 weeks at 23-26?C with intermittent misting (IBA TALC 8000 PPM). Can be air layered in the summertime by removing bark around the circumference of a branch of the trunk. Able to be side grafted in winter.
CultivationBest suited for natural environments. Prefers moist loamy or sandy soil and full sun. Can handle acidic soils of 4.5 pH or less. Pond Pine has a medium growth rate, which can decrease if constantly left in overly wet soil. It can tolerate forest fires, is deer resistant, but prone to wind damage if not protected.
PestsSusceptible to red heart rot which affect 90 to 95% of mature Pond Pines. Fusiform rust, eastern gall rust, Southern Pine Beetles, Black Turpentine Beetles, and Engraver Beetles.
Notable SpecimensPocosin Lakes National Wildlife Refuge in Columbia, North Carolina, United States of America. Look out for National Parks like this one on the east coast.
HabitatThe Pond Pine is considered an overstory tree and it thrives in coastal, and swampy regions. It is at home in saturated and acidic soils around ponds and pocosins in the east coast of United States.
Bark/Stem DescriptionMedium thickness bark with a red/brown colouration of protruding and irregularly shaped scales on mature trees and a smooth texture on young ones. New stems are slightly orange coloured and become darker as they mature.
Flower/Leaf Bud DescriptionThis tree has many epicormic buds in case of fire defoliation. The external buds are 5 mm long, reddish brown coloured, cylindrically shaped, pointed, and are covered in resin.
Leaf DescriptionThe needles are 10 – 20 cm long and up to 2 mm wide. They are light green and grow in fascicles of 3. They are located primarily in groups on the ends of branches and are quite flexible.
Flower DescriptionMonoecious flower system. Pollen cones (male) are dark orange 2 cm long clustered catkins which bloom in April. Seed cones (female) 7 cm long ovoid shaped, located in pairs along branches.
Fruit Description7 cm long, brown, conic ovoid shaped, with pointed scales which remain closed for 3 to 5 years. Hence the name serotina which is Latin for late maturing fruit. They will also be opened by the intense heat of forest fires. The seeds are winged and are 5 mm long.
Colour DescriptionMost notable colours are the light green foliage contrasted by red/brown bark. This will be unchanged by winter. Any colouration provided by buds are minor and will not be noticed from afar.
Texture DescriptionA coarsely textured tree which remains consistent throughout the seasons.

Photographs