Thuja occidentalis 'Holmstrup' (Holmstrup Arborvitae, Holmstrup Cedar)


Michael's Opinion

A common landscape plant for hedges or as pyramidal accent plants in the landscape. A very tough, resilient cultivar.

Botanical Information

FamilyCupressaceae
GenusThuja
Speciesoccidentalis
Cultivar'Holmstrup'
CategoryWoody
TypeTree (evergreen)
OriginIntroduced to Ontario from Denmark in 1951.
Pronunciation

Details

USDA Hardiness Zone6b - 7a
USDA Hardiness Ref.
Canadian Hardiness Zone6
Canada Hardiness Ref.
RHS Hardiness ZoneH6
RHS Hardiness Ref.
Temperature (°C)-21 - (-15)
Temperature (°F)-5 - 5
Height4 m
Spread1 m
GrowthSlow
Flowering PeriodMay

Description and Growing Information

General DescriptionSmall, dense, pyramidal cedar with dull green foliage.
ID CharacteristicCompact, narrow, dense foliage, pyramidal in stature with the foliage being a dull light-green.
ShapeDensely pyramidal.
LandscapeGeneral garden use, looks great in either mass plantings or specimens, used as hedges/screening and is a beautiful vertical accent; nice winter interest although not as nice as 'Emerald'.
PropagationTake cuttings from current seasons wood with a heel from November onwards through early March. Root in perlite/peat/3/1 with about 4000 ppm of KIBA with bottom heat and mist.
PestsBagworm, heart rot, leaf miner, spider mites, and deer.
Notable SpecimensThe Gardens of Fanshawe College, London, Ontario, Canada.
HabitatHorticultural origin.
Bark/Stem DescriptionBrown-orange.
Flower/Leaf Bud DescriptionRounded.
Leaf DescriptionScaled, 2.5 cm long and scented.
Flower DescriptionWhite.
Fruit DescriptionOblong, 2.5 cm long.
Texture DescriptionMedium-fine.

Photographs