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Rain Garden Plants: Sweetgum

An informative guide to sweetgum (Liquidambar styraciflua), detailing its unique characteristics, site preferences, and value to wildlife.
Updated:
October 3, 2025

Sweetgum is a medium to large deciduous tree that must be planted with room to grow. The star-shaped leaves have 5 to 7 pointed, finely-toothed lobes. Yellow-green flowers appear in clusters in April and May. The female flowers develop the "gumballs." The spiny, ball-like fruit contains seeds and can be a nuisance. It has very showy yellow, orange, red, and purple fall foliage. Bark, especially on the branches, is covered in corky projections. It is resistant to drought, compacted soils, deer, and rabbits.

  • Height: 60 to 80 feet, occasionally up to 100 feet
  • Bloom color: Green
  • Bloom time: April/May
  • Hardiness zone: 5 to 9
  • Salt tolerance: Tolerant of salt spray and soil salt

Site Conditions

  • Sun: Full sun to partial shade
  • Soil: Neutral to acidic, moist, well-drained
  • Hydrologic zones: Wet/moist
Green, star-shaped leaf.
Star-shaped leaf. Credit: Mike Masiuk, Penn State
Dark red leaf in fall.
Fall color. Credit: Jodi Sulpizio, Penn State Extension
A close-up of corky projections on branches.
Corky projections on bark. Credit: Jodi Sulpizio, Penn State Extension.
Close-up of mature fruit.
Mature fruit. Credit: Jodi Sulpizio, Penn State Extension
Close-up of flower.
Flower. Credit: Jodi Sulpizio, Penn State Extension
View of mature sweetgum.
Mature sweetgum trees. Credit: Jodi Sulpizio, Penn State Extension

Sources

Morton Arboretum

Missouri Botanical Garden 

Prepared by Jodi Sulpizio, Jessica Chou, and Constance Schmotzer. Peer reviewed by Scott Sjolander and Sandra Feather. Finalized by Jodi Sulpizio