Picea omorika 'Nana' (Dwarf Serbian Spruce)


Michael's Opinion

Although glorified by many, I find this plant to be disapointing in comparison to the straight species. Its dense compact form causes it to lack the elegance provided by the ascending, pendulous branches of the parent plant. The bi-colour foliage is quite attractive on a smaller plant, but is less visable with maturity. Mistook the mature specimen at the University of Guelph for a Picea pungens f. glauca cultivar with which it was grouped. Appeared completely blue, and stiff.

Botanical Information

FamilyPinaceae
GenusPicea
Speciesomorika
Cultivar'Nana'
CategoryWoody
TypeShrub (evergreen)
Pronunciation

Details

USDA Hardiness Zone4-8
USDA Hardiness Ref.
Canadian Hardiness Zone3a
Canada Hardiness Ref.
RHS Hardiness ZoneH7
RHS Hardiness Ref.
Temperature (°C)-37
Temperature (°F)-34
Height2-3 m
Spread2-3 m
GrowthSlow
Flowering PeriodMay

Description and Growing Information

General DescriptionA dwarf evergreen that is upright and slow growing. Reaches a mature height of 3 m in 40-50 years. A popular choice for small landscapes due to interesting blue-green foliage and low maintenance.
ID CharacteristicA very dense, dwarf tree. Needles have two blue glaucious stripes on their underside and green on their upper side. Bark is orange-brown when young and turns red-brown and scaly with age. Branch structure is horizontal. Buds are reddish brown and the plant is commonly sterile.
ShapeGlobular when young, becoming pyramidal with age.
PropagationGrafted from semi-hardwood cuttings. In the rare chance it produces seeds, they will be sterile.
CultivationRequires full sun to partial shade. Adaptable to different pH's and highly tolerant of pollution and heat. Must have well drained soil as it will perish rapidly in standing water. Protect from heavy winds.
PestsGenerally pest free, but aphids are the most common. Also, gall insects and red spider mites will sometimes cause a problem. Various wood rots, witches' broom, mistletoe, rust, and needle cast are not uncommon.
Notable SpecimensWhistling Gardens, Wilsonville, Ontario, Canada. The Arboretum, University of Guelph, Guelph, Ontario, Canada.
HabitatThrives in well-drained soil with full sun to partial shade.
Bark/Stem DescriptionYoung shoots are a smooth pale orange-brown, becoming richer in colour with age. Mature bark is scaly and slightly flaking. Bark is hidden behind the dense foliage.
Flower/Leaf Bud DescriptionDeep orange-brown to reddish brown, 2-5 mm long. Acute, with a sharp point. Scales may be fringed near the apex.
Leaf DescriptionResembling the straight species only shorter, 7-15 mm long. Medium green on upper side, with two lower sides blue/silver and glaucious. Apex pointed and sharp. Needles are close together and radially arranged.
Flower DescriptionUsually a non-flowering cultivar.
Fruit DescriptionIf cones are produced they may be egg shaped cones, most often sterile.
Colour DescriptionCan range from a medium green, a silvery blue, or a combination of both. Bark is reddish brown but generally not highly visable.
Texture DescriptionMedium.

Photographs