As a Board Certified Master Arborist, I’m often asked what tree species perform well in our urban landscapes. While many homeowners are familiar with maples, oaks, and elms, one underappreciated species that deserves attention is the Hackberry tree (Celtis occidentalis). Tough, adaptable, and attractive, the Hackberry tree has many attributes that make it a strong choice for yards, city parkways, and parks.
Quick Facts: Hackberry (Celtis occidentalis)
- Native Range: Chicago area native, as well as, native to the Midwest to the upper eastern United States.
- Mature Size: 40–60 feet tall, 40–50 feet wide
- Growth Rate: Moderate to fast
- Soil Tolerance: Adaptable to a wide range; clay, loam, or sandy soils. Tolerant of poor drainage and drought (once established)
- Sunlight Needs: Full sun to partial shade
- Wildlife Value: Fruits (drupes) and foliage support birds, mammals, and pollinators
- Fall Color: Yellow
- Hardiness Zone: 2–9 (well-suited to Chicagoland)
Adaptability and Hardiness
The hackberry tree is remarkably well-suited to Chicagoland’s variable climate and soil conditions. Being native to Illinois, it is naturally adapted to our hot summers, cold winters, and occasional droughts or flooding. Once established, a hackberry tree can thrive in everything from heavy clay soil to lighter, sandy sites, making it a reliable choice for both residential and urban landscapes.
Resistance and Durability
Another standout quality of a hackberry tree is its resilience against pests and diseases. While no tree is completely immune to problems, hackberry trees generally fare better long-term than species, for example, Ash trees threatened by Emerald Ash Borer or Elm trees susceptible to Dutch elm disease. This durability translates to lower maintenance costs, lower mortality rates, and more consistent canopy cover in neighborhoods and parks.
Environmental and Wildlife Benefits
Because hackberry trees are a native species, it plays an important role in supporting local ecosystems. Its small, berry-like fruits (drupes) are a valuable late-winter food source for birds such as Cedar Waxwings and Robins. Many birds also find it to be a suitable nesting site. The foliage is also a host plant for several butterfly species, including the Question Mark, Mourning Cloak, and Hackberry Emperor. Mammals such as squirrels and foxes feed on the fruit as well, linking hackberry trees directly to local food chains.
In addition to wildlife support, Hackberry trees contribute to urban ecology by providing shade, cooling neighborhoods, and improving air quality. Choosing native trees like the Hackberry isn’t just good for your yard, it’s a way to give back to the local environment.
Aesthetic Appeal
Though sometimes overlooked for showier ornamentals, Hackberry trees have a subtle beauty. Its light green leaves, unique corky bark ridges, and yellow fall color give it interest throughout the year. Its mature size, typically 40 to 60 feet tall, makes it a solid shade tree without overwhelming a standard urban lot.
Where to Plant Hackberry
If you’re considering adding a Hackberry tree to your landscape, here are a few tips:
- Spacing: Plant hackberry trees at least 25–30 feet from structures or other large trees to give it room to develop a full canopy.
- Yard Planting: Ideal as a shade tree in medium to large yards, especially where heat and sun exposure are high.
- Street Trees: Hackberry tolerates urban stress and road salt, making it a solid option for parkways and along neighborhood streets.
- Parks and Open Spaces: Great for larger areas where long-term canopy growth and wildlife benefits are desired.
- Companion Trees: Pairs well with other natives like Bur oak, Kentucky coffeetree, or Honey locust trees, all which will encourage diversified landscapes.
As we experience weather extremes and ongoing threats from invasive pests and diseases, it’s important to select resilient, adaptable trees. Planting native trees like hackberry trees, we not only add reliable shade and beauty to our communities, but we also strengthen local ecosystems by supporting birds, pollinators, and other wildlife.
Hackberry trees may not always be the flashiest trees on the block, but their reliability, ecological value, and quiet beauty make them one of the most underappreciated yet outstanding choices for Chicagoland landscapes.
