Picea glauca 'Jean's Dilly' (Jean's Dilly Dwarf Spruce)


Michael's Opinion

Picea glauca 'Jean's Dilly' is a very slow growing dwarf evergreen growing at about two thirds the rate of a similar cultivar P. glauca 'Conica'. Additionally its needles are thinner, smaller, shorter and slightly twisted with growth beginning some 2-3 weeks later.

Botanical Information

FamilyPinaceae
GenusPicea
Speciesglauca
Cultivar'Jean's Dilly'
CategoryWoody
TypeTree (evergreen), Shrub (evergreen)
OriginDiscovered as a mutation of Pice glauca 'Conica' in 1981 at Iseli Nursery in Oregon and named in memory of Jean Iseli by his brother André.
Pronunciation

Details

USDA Hardiness Zone4 - 8
USDA Hardiness Ref.
Canadian Hardiness Zone5 - 7
Canada Hardiness Ref.
RHS Hardiness ZoneH7
RHS Hardiness Ref.
Temperature (°C)-40
Temperature (°F)-48
Height1.2 m (annual growth rate of 5-8 cm a year, reaching 1.2 m in 15 years)
Spread60 cm
GrowthSlow

Description and Growing Information

General DescriptionThis dwarf white spruce is an impressive cultivar used as an accent plant. It is rather fine textured, with striking, compact dark green needles that give the tree an everlasting lush and bushy look.
ID CharacteristicPicea glauca 'Jean's Dilly' is very similar to Picea glauca 'Conica' the twisted tipped needles and very pyramidal shape are what differentiate it from P. glauca 'Conica'.
ShapeVery pyrmidal.
LandscapeThis spectacular cultivar is used in groupings, pottings, foliage interests, ornamental accents and is best used in a rock garden.
PropagationSoftwood cuttings in mid to late June under intermitten mist, or hardwood cuttings in the late autumn with bottom heat.
CultivationIt is best planted in part sun, it will dry out if not watered as needed and thus dry locations should be avoided. Supercharging needs to be done leading up to the winter months and in the more northern climates it should be wrapped.
PestsSusceptible to spruce bagworm, Euro sawfly and spider mites.
HabitatHorticulture origin.
Bark/Stem DescriptionVery dark in colour.
Flower/Leaf Bud DescriptionThese buds are very small and are a dark chestnut brown colour.
Leaf DescriptionEvergreen needles approximately 5-7 mm in length with a slight twisting on the ends.
Fruit DescriptionVery rarely producing small dark chestnut brown cones.
Colour DescriptionDark green foliage.
Texture DescriptionVery fine in texture.

Photographs