Magnolia dealbata (Cloudforest Magnolia)


Botanical Information

FamilyMagnoliaceae
GenusMagnolia
Speciesdealbata
CategoryWoody
OriginHidalgo, Oaxaca and Veracruz, Mexico. California and Texas, United States of America. This species has been placed on the IUCN Red List as globally threatened.

Details

USDA Hardiness Zone8 - 10
USDA Hardiness Ref.
Canada Hardiness Ref.
RHS Hardiness ZoneH2 - H5
RHS Hardiness Ref.
Temperature (°C)-26
Temperature (°F)-15
Height9.8 - 16 m
Spread9.8 m
GrowthMedium
Flowering PeriodMay, June

Description and Growing Information

General DescriptionA small deciduous tree that is easily identified by its massive leaves, which are the largest of any native North American tree – measuring 81 cm long by 30 cm wide. It has fairly large creamy-white flowers.
ID CharacteristicCan be identified by its thin, leather-like grey bark which is fairly smooth. The branches are generally spread out, thick and hang down with some leaf scars. The leaves are very large, are bright green in colour on top and are silvery-grey on the bottom side.
LandscapeBigleaf Magnolia may be used in parks, campuses, forests and other urban-to-rural settings.
CultivationBest grown in moist, well-drained loamy soil that is rich with nutrients and organic matter. Keep in full sun to part shade. Cannot tolerate most urban pollutants. Must be protected from strong winds, as they can rip off its oversized leaves. If recently planted, it could take up to 4 or more years before you see the first bloom appear.
HabitatLower valleys safe from harsh winds.
Bark/Stem DescriptionFairly thin, grey and soft bark that is generally smooth but has some scattered surface bumps. It also carries yellow-green furry twigs that range from 38 mm to 50 mm long. These twigs are coated in white, woolly hairs, which is generally described as hirsute.
Flower/Leaf Bud DescriptionLarge, tomentose, light green terminal buds that are 1 cm to 2.5 cm long.
Leaf DescriptionVery large, thin oval-shaped leaves that measure 51 cm to 76cm long and up to 305 cm wide. The leaves grow off the branch alternately and have a reticulate structure.
Flower DescriptionIts flowers can grow up to 50 cm in diameter and are creamy-white in colour. The three inner petals have a hint of purple towards the base. The flowers have 6 - 8 overlapping petals and are similarly shaped to the leaves because they are fairly narrow and long.
Fruit DescriptionSmall, round reddish-pink fruits that are generally 7.6 cm long. When fully mature, each fruit splits open along a vertical line to release seeds inside.
Colour DescriptionIts foliage is dark green in the summer months dark brown in autumn. The flowers are creamy-white with small hints of purple on the inner 3 petals.
Texture DescriptionThe texture of the tree is overall smooth. The bark is very soft to the point of being imprint-able. The leaves are smooth yet slightly leathery and the buds are tomentose.

Photographs