Betula maximowicziana (Monarch Birch)


Botanical Information

FamilyBetulaceae
GenusBetula
Speciesmaximowicziana
CategoryWoody
TypeTree (deciduous)
OriginJapan.
Pronunciation

Details

USDA Hardiness Zone5b - 6b
USDA Hardiness Ref.
Canadian Hardiness Zone4b - 6a
Canada Hardiness Ref.
RHS Hardiness ZoneH7
RHS Hardiness Ref.
Temperature (°C)(-26) - (-18)
Temperature (°F)(-15) - 0
Height24-32 m
GrowthFast
Flowering PeriodApril

Description and Growing Information

General DescriptionThis tree has been placed on the IUCN Red List as least concern.
ID CharacteristicVery long leaves and coarse texture make it easy to distinguish from other birches.
ShapePyramidal shape when young; round when mature.
LandscapeA tree often used for lawn, casts light shade, reported to be resistant to bronze birch borer which plagues other white barked birches.
CultivationEasy to grow, grows rapidly in full sun.
Notable SpecimensWestonbirt, The National Arboretum, Tetbury, Gloucestershire, England.
Bark/Stem DescriptionWhen young, bark is smooth, somewhat shiny and a bronze-colour. Mature bark ranges from grey to white.
Leaf DescriptionLeaves are the largest of all birches; 19 x 14 cm. The edges are finely serrate. New leaves are downy which grow into a lustrous dark green. Autumn foliage is a bright yellow.
Flower DescriptionMonoecious, male catkins are 10 to 12.5 cm long and female catkins up to 6 cm, in racemes of two-four.
Fruit DescriptionNutlets are held in cylindrical catkins.
Colour DescriptionLeaves are a lustrous dark green changing to bright yellow in autumn.
Texture DescriptionCoarse texture.

Photographs