The best group of trees to plant to support pollinators are the oaks. As a group, they support over 500 species of caterpillars. Oaks also serve as a food source for many other forms of wildlife, including birds and mammals. Swamp White Oak is an excellent choice as a landscape plant. Its trunk has peeling bark that provides a textural element while its leaves have rounded lobes.
Pollinator Type
Caterpillars
Plant Type
Deciduous tree
Zone
4 to 8
Height
50-70 ft
Spread
50-60 ft
Light
Full Sun
Moisture Requirement
Medium Soil, Wet Soil
Bloom Color
Green
Bloom Time
April, May
Design Considerations
This oak species can tolerate clay soils, soil compaction, and temporary flooding.
Care and Maintenance
Once established, this tree tolerates normal fluctuations in growing conditions, including short flooding and drought periods. Does prefer a more acidic soil. Will drop acorns in a mast year.
Pest and Diseases
Anthracnose, canker, leaf spot, rust, blight, galls, oak lace bug, and oak mite.
Establishment and Propagation
Transplant from nursery container in fall or spring.
Commercial Availability
Commonly available.
Alternative Plant Selections
White Oak, Bur Oak
Native Status
Illinois native statewide.
Fall Color
Leaves turn a golden yellow to brown.
Growth habit
Swamp White Oak forms a rounded crown, but if it has the space to grow, will produce a broader form.
Number of Caterpillars that Use this as a Host Plant
