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Magnolia macrophylla (Bigleaf magnolia, Large-leaved cucumber tree, Umbrella tree)

Magnolia macrophylla Photo/Illustration: Virginia Small


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Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11
Botanical Name: Magnolia macrophylla mag-NO-lee-ah mak-roe-FIL-lah Common Name: Bigleaf magnolia, Large-leaved cucumber tree, Umbrella tree Genus: Magnolia
This deciduous species has remarkable leaves that are over 3 feet long and 1 foot wide. They are light green above and silvery beneath. It flowers in early summer with creamy-white, fragrant blossoms that reach a foot across. Magnolia macrophylla grows up to 40 feet tall and wide. It is native to North America.
Care: Grow in moist, well-drained, preferably acidic to neutral soil in sun or partial shade; magnolias do not tolerate wet feet. Magnolia flowerbuds are susceptible to late-season frosts; shelter large-leaved species from windy locations. Prune trees and deciduous shrubs in late winter or late summer to prevent bleeding of sap; prune minimally to maintain a healthy framework. 
Propagation: Sow seeds in autumn or stratify to hasten germination. Root softwood cuttings in early summer. Magnolias can be layered in early spring, grafted in winter, and propagated by bud in summer.
Problems: Bacterial leaf spot, spot anthracnose, canker, dieback, butt rot, powdery mildew, anthracnose, fungal spots, weevils, snails, scale insects, thrips, planthoppers.
Height Over 30 ft.
Spread Over 30 ft.
Growth Habit Clumps
Growth Pace Moderate Grower
Light Full Sun to Part Shade
Moisture Medium Moisture
Maintenance Low
Characteristics Fragrant Flowers; Native; Showy Flowers; Showy Foliage; Showy Fruit
Bloom Time Summer
Flower Color White Flower
Uses Flowering Tree, Naturalizing, Specimen Plant/ Focal Point, Waterside
Style Formal Garden, Woodland Garden
Seasonal Interest Spring Interest, Summer Interest, Fall Interest
Type Trees

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