Swamp White Oak is a deciduous tree that grows 50 to 60 feet tall with a broad, rounded crown and distinctive two-toned foliage: dark, shiny green leaves on top and silvery white beneath. Hardy in zones 3 through 8, it thrives in full sun and moderate moisture, making it exceptionally well-suited to wet sites where many other trees struggle. The tree grows at a moderate pace and produces acorns in early fall, attracting birds and wildlife throughout the seasons. Its remarkable adaptability to challenging soil conditions and longevity make it a cornerstone choice for rain gardens, street plantings, and landscapes that need both ecological value and visual interest.
Full Sun
Moderate
3-8
720in H x 720in W
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Moderate
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The silvery undersides of its leaves catch the light in a way that few oaks do, creating a shimmering effect when the wind moves through the canopy. This medium-sized oak tolerates wet soil exceptionally well, thriving in conditions that would challenge most other trees. Its ability to grow in acidic, moisture-rich soils makes it invaluable for rain gardens and low-lying areas where drainage is poor. Birds flock to its acorns, and the yellow fall color (sometimes touched with reddish purple) adds seasonal beauty to the landscape.
Swamp White Oak serves as a shade tree, street tree, and rain garden specimen. Its tolerance for wet soil makes it particularly valuable in landscapes designed to manage stormwater runoff and in low-lying areas prone to seasonal flooding. As a native species, it provides food and shelter for birds and wildlife, contributing to ecological restoration efforts.
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Transplant in spring or fall when the tree is dormant. Dig a hole slightly wider than the root ball and no deeper than the root collar. Swamp White Oak can be difficult to establish, so ensure the planting site has adequate moisture and acidic soil. Backfill with native soil and water thoroughly. Mulch around the base to retain moisture during the first growing season.
Prune Swamp White Oak in late winter or early spring while dormant to maintain its broad, rounded crown and remove any dead, diseased, or crossing branches. Minimal pruning is needed once the tree is established; focus on structural pruning in young trees to encourage a strong framework.
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