Pinus heldreichii var. leucodermis 'Nana' (Dwarf Bosnian Pine)


Michael's Opinion

This is an excellent dwarf conifer that can tolerate dry conditions. It is suited to use in rock gardens and could be used as a specimen plant. This dwarf will add texture to any garden.

Botanical Information

FamilyPinaceae
GenusPinus
Speciesheldreichii
Varietyleucodermis
Cultivar'Nana'
CategoryWoody
TypeShrub (evergreen)
Pronunciation

Details

USDA Hardiness Zone5 - 6
USDA Hardiness Ref.
Canadian Hardiness Zone4a - 6a
Canada Hardiness Ref.
RHS Hardiness ZoneH7
RHS Hardiness Ref.
Temperature (°C)-29 - (-18)
Temperature (°F)-20 - 0
Height1-3 m
Spread1-2 m
GrowthSlow
Flowering PeriodJune

Description and Growing Information

General DescriptionDwarf conifer that has stiff needles and grey bark with branches that ascend on an upward angle. The needles are held in fascicles of two and are a deep green.
ID CharacteristicCones are ovoid in shape and purple-blue when young. Needles may persist for 5-6 years and are prone to desiccation if left unprotected for the winter. Branches grow on an upward almost 45 ° angle.
CultivationA hardy species that prefers slightly acidic soil conditions ranging from sandy to slight clay. Withstands drought and salt and will thrive in full sun. Prefers a well drained soil.
PestsSalt tolerant and resistant to diplodia tip blight.
Notable SpecimensThe Gardens of Fanshawe College, London, Ontario, Canada.
Bark/Stem DescriptionThe bark is grey and fractured in appearance on older growth but yellow-grey in colour on new growth.
Flower/Leaf Bud DescriptionSmall terminal bud, light blue to grey in colour, round in shape, buds are 1 cm in length.
Leaf DescriptionTwo needles in a fascicle, with stiff forward pointing needles. The needles measure 6-9 cm in length and are glossy green in colour.
Flower DescriptionSmall and pistillate, inconspicuous, yellow-green in colour; 2.5 cm in length.
Fruit DescriptionWhen young the cones are blue-purple in colour but turn brown as they mature. Cones are 2.5-3.5 cm in length and ovoid in shape.
Colour DescriptionBark is grey and fractured on mature growth and peels off in plates.
Texture DescriptionSharp and stiff foliage with dentate stomatal lines on all surfaces. Smooth in texture and light edges can be felt along the needle.

Photographs