Acer griseum (Paperbark Maple)


Michael's Opinion

This is an exceptional tree that has gained popularity in recent years. It thrives in tough, dry, lean soil and is usually pest free. The bark, autumn colour and ease of culture make this a class tree for both the large and small garden alike. Either multi-stem or single stem forms are available and each suits a different purpose in the landscape.

Botanical Information

FamilySapindaceae (Aceraceae)
GenusAcer
Speciesgriseum
CategoryWoody
TypeTree (deciduous)
OriginChina (Gansu, Henan, Hubei, Hunan, Shaanxi and Sichuan). Introduced by E. H. Wilson, a Kew trained horticulturist, from one of his Chinese plant collecting expeditions (1899-1911).
Pronunciation

Details

USDA Hardiness Zone4 - 8
USDA Hardiness Ref.
Canadian Hardiness Zone2a - 8a
Canada Hardiness Ref.
RHS Hardiness ZoneH4 - H7
RHS Hardiness Ref.
Temperature (°C)(-32) - (-7)
Temperature (°F)(-25) - 20
Height6 - 9 m
Spread5 - 8 m
GrowthMedium
Flowering PeriodApril

Description and Growing Information

General DescriptionA small tree with distinct bark and deeply dissected leaves. This species has been placed on the IUCN Red List as globally threatened.
ID CharacteristicExfoliating cinnamon coloured bark.
ShapeSmall tree with a somewhat rounded crown.
PropagationOccasionally from seed, but few are viable, stratify at 4°C for three months. Otherwise Michael Dirr reports some success with cuttings from seedlings.
CultivationEasy to grow in lean soils and once established requires little water, the trees in the Cuddy Garden in Strathroy have undergone a 3 month summer drought with little affect. Will also thrive in good garden soil; pest free.
Notable SpecimensThe A.M. Cuddy Gardens, Strathroy, Ontario, Canada. The University of Western Ontario, London, Ontario, Canada. Westonbirt, The National Arboretum, Tetbury, Gloucestershire, England.
HabitatMountains and dry forest.
Bark/Stem DescriptionOutstanding, cinnamon colour with a slight sheen and exfoliating in thin sheets.
Flower/Leaf Bud DescriptionSharply pointed and small to the point of being insignificant.
Leaf DescriptionDeeply dissected three lobed, 5 cm across and 8 cm in length. Very good autumn colour, usually red to orange but sometimes yellow. The leaves are often hairy on the underside and the petiole is dark pink.
Flower DescriptionSmall, yellow-green and ornamentally insignificant.
Fruit DescriptionA slightly tomentose samara that often does not contain an embryo; they are held in small groups on the tree and persist often into the winter months.
Colour DescriptionAutumn leaf colour can be yellow to orange/red and quite attractive.
Texture DescriptionFinely textured leaf form, while the bark is medium to rough texture.

Photographs