Bigleaf Magnolia

Names

Scientific name
Magnolia macrophylla
Common name
Bigleaf Magnolia, Umbrella Magnolia

Description

Magnolia macrophylla, commonly known as Bigleaf Magnolia or Umbrella Magnolia, is a deciduous tree native to the southeastern United States. This species is particularly notable for its large leaves, which can measure up to 30 inches in length, making it one of the largest-leaved trees in North America. The leaves are broad, glossy, and dark green, providing a lush canopy that offers excellent shade during the warmer months. The tree typically grows to a height of 30 to 40 feet, with a spread of 20 to 30 feet, creating a substantial presence in any landscape.

The growth habit of Magnolia macrophylla is upright and pyramidal when young, maturing into a more rounded crown as it ages. The tree's bark is smooth and gray, adding to its ornamental appeal. In late spring to early summer, the Bigleaf Magnolia produces stunning, large, creamy white flowers that can reach up to 12 inches in diameter. These flowers are cup-shaped and have a delightful fragrance, attracting various pollinators, including bees and butterflies. The blooms are a striking contrast against the dark green foliage, making the tree a focal point in gardens and parks.

In terms of care, Magnolia macrophylla prefers well-drained, moist soils and thrives in full sun to partial shade. It is relatively low-maintenance once established, but it does benefit from regular watering, especially during dry spells. The tree is hardy in USDA zones 5 to 9, making it suitable for a variety of climates, but it particularly flourishes in zone 8a, where the temperatures are mild and the growing season is extended. This species is also known for its ability to tolerate some drought once established, although consistent moisture is ideal for optimal growth.

Overall, Magnolia macrophylla is an excellent choice for those looking to add a unique and beautiful tree to their landscape. Its impressive foliage, stunning flowers, and ability to attract wildlife make it a valuable addition to gardens, parks, and natural areas. Whether used as a specimen tree or in a mixed border, the Bigleaf Magnolia is sure to impress with its grandeur and beauty throughout the growing season.

Measurements

Height
30 - 40 ft
Spread
20 - 30 ft
Spacing
25 ft
Growth Rate
Moderate; typically grows 12 to 24 inches per year.

Requirements

Hardy in Zone 8a
Yes
Water Requirements
Moderate; prefers consistently moist soil but can tolerate some drought once established.
Sunlight Requirements
Full sun to partial shade; best growth occurs in full sun.
Soil Type
Loamy, well-drained soil; prefers rich, organic matter.
Soil pH
Acidic to neutral (pH 5.5 to 7.0).

Physical Traits

Foliage Color
Dark green
Bloom Characteristicss
Large, creamy white flowers, up to 12 inches in diameter, fragrant, blooming in late spring to early summer.
InterestingSeasons of Interest
Spring and summer for blooms; foliage interest throughout the growing season.

Toxicity

Poisonous to Humans?
Nontoxic
Poisonous to Pets?
Nontoxic

Attracts

Attracts Birds?
Yes
Attracts Bees?
No
Attracts Butterflies?
Yes

Propagation Instructions

Can be propagated by seed or by softwood cuttings taken in late spring to early summer.

Learn More

Last updated on August 28, 2024. We try our best to make sure this information is accurate. Did we make a mistake? Let us know at support@knownplants.com.