Trees

How to identify common holiday evergreens

Evergreen foliage has long been a traditional holiday decoration since it encapsulates the green of the growing season well beyond the first frosts.  The holiday season is an excellent time to practice your evergreen tree identification on the many non-natives that are so plentiful at retail...
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A mature American elm at Morton Arboretum in Lisle, IL

Breeding elms to combat Dutch elm disease

The Garden Scoop
Over this past week, the fall weather has brought bare branches to the previously color-filled canopies of so many trees in the landscape.  As the autumn leaf drop has progressed, there are several elm trees that I pass each day which have held onto their fall color and really look spectacular...
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Smooth sumac is a commonly occurring native plant that boasts a spectacular fall display of fiery red leaves.

Native Shrubs for Fall

Shrubs are often overlooked in autumn, typically playing second fiddle to overtopping shade trees that steal the fall display.  However, quite a few deciduous shrubs have spectacular fall color to offer in the landscape.  In many settings these smaller woody plants can help provide eye-...
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Tree Root Collar Disorders

The root collar of a tree can be defined as an area of the lower trunk that transitions from trunk tissue to root tissue.  It is typically associated with the basal flare, or the trunk flare of the tree, which is the wider portion of trunk that insects the ground.  In recent years,...
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Urban trees provide a variety of benefits which are going to be increasingly important as climate change impacts Illinois in coming years.

Climate Change Adaptations for the Urban Forest

Last month, the US Forest Service released a technical report titled, “Climate Adaptation Actions for Urban Forests and Human Health.”   The report includes a summation of the current research related to urban trees and climate change, looking at how trees benefit human health, how...
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As the summer heat intensifies and rainfall dwindles, watering newly planted trees and shrubs becomes incredibly important.

Watering Trees and Shrubs

Although rainfall has been significant so far this summer, newly planted trees and shrubs need watering as daily high temperatures creep up and rain dwindles during the drier part of our summer.  The next few months can be critical for woody plants struggling to become established in their...
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‘Forest Pansy’ is a cultivar of our native redbud that offers unique purple foliage.

Adding purple shade trees to your landscape

The ornamental value of landscape trees can be weighed by a variety of attributes, from interesting bark in the wintertime or colorful blooms in spring to the character of leaves that persists during the growing season. However, the foliage that embellishes branches to create a summertime...
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This year, periodical cicadas in Brood X will emerge across Indiana and a small, 4-county area of central Illinois.

17-Year Cicadas of Brood X

The Garden Scoop
Over the next few weeks, some of central Illinois will experience a rare phenomenon that only occurs every other decade.  As soil temperatures warm, millions of insects will emerge from the ground in forests, city parks, yards and gardens.  They will carefully navigate the terrain and...
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Redbud is a fantastic spring-flowering tree offering the best floral display of any Illinois native tree.

The top four spring-flowering trees to plant

The Garden Scoop
Spring is a time of abundant blooms as well as one of the best times of year to establish new woody plants in your landscape. This year, consider adding one, or all, of my favorite Illinois native spring-flowering trees to your landscape, and you’ll enjoy spring floral displays for years to...
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