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The frosty accumulation of ice crystals on these spruce needles resulted from the wafting spray of an adjacent (untreated) roadway and serves to illustrate how salt spray can accumulate on plant parts.

How winter salt can damage landscape plants

Deicing salts are essential to winter travel in Illinois and provide necessary safety in a landscape setting by melting dangerous ice on precarious steps, sidewalks, entryways, and other areas of frequent foot traffic. However, winter damage from salt can be a major problem in some landscapes...
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Ice accumulation yesterday resulted in damage to many trees and shrubs in our area.

Ice Accumulation on Trees and Shrubs

Freezing rain is a regular part of winter weather patterns in central Illinois, resulting in occasional ice storms that can damage property, take out utilities and wreak havoc on tree canopies.  By meteorological definition, an ice storm occurs when ice accumulation is greater than 0.25 inches...
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Poinsettias are one of the most popular holiday plants in the US.

Poinsettia Myths

Poinsettias are a symbol of the holidays that have adorned wintertime homes in the US since their rise in popularity almost 200 years ago.  These gorgeous plants are native to Mexico and naturally reach full bloom near the holidays, making them a ubiquitous plant of the holiday season. ...
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Trees and other woody plants grow from buds at tip of each limb which release hormones to suppress growth of other buds lower down the stem.

How Woody Plants Grow

Woody plants are some of the largest and most long-lived plants in the landscape, forming the majestic and expansive canopy of our urban and natural forests.  With all of this wonderful woody growth, have you ever stopped to think about why woody plants attain greater height than their smaller...
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Native butterfly milkweed is a favorite among gardens for its beautiful flowering display and high wildlife value, but native plants are a surprising minority of plant material available for purchase each year in the US.

Natives and Landscape Plant Selection

Native plants are becoming a larger part of our built environment each year as more and more gardeners begin to recognize their value. Natives support local ecosystems and wildlife habitat in ways that are increasingly important as our human footprint on the landscape grows.  From...
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Selecting a Christmas Tree for the Holidays

Thanksgiving brings us a feast that, for many gardeners and naturalists, signifies the final harvest and close of the growing season. As we draw further away from the growing season and nearer to the winter solstice, many of us turn our focus to bringing light and greenery into our homes. Whether...
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 Metal hardware cloth is a great material to protect young trees and shrubs from winter browsing wildlife.

Winter Protection for Newly Planted Trees and Shrubs

Fall is an excellent time to add new trees or shrubs to the landscape and many of us have already taken advantage of mild weather and sunny days to get new plants in the ground.  With the lion’s share of work complete after digging, planting and mulching are finished, we often overlook some of...
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The brown marmorated stink bug is an increasingly detrimental pest on wide range of agricultural crops that commonly seeks shelter in our homes over winter.  Photo credit – Kelly Allsup, Illinois Extension

Unwanted Winter Houseguests

Insects are a celebrated part of our natural ecosystems, but when they enter our homes, it’s rarely anything to celebrate.  Each fall as cold weather closes in, there are a few usual suspects that surface at my house to cause a hubbub.  However, these exotic houseguests are rarely a...
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Honey locust can have large and terrifying thorns making it one of our spookiest native trees.

Top Four Spookiest Native Trees

Images of witches, skeletons, and other specter abound this time of year.  But we really don’t need to look much beyond the natural world for a dose of spooky entertainment? This week, I’ve compiled my list of the top four spookiest native trees that all offer some great Halloween-related...
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Burning bush (red leaves) and bush honeysuckle (green leaves with red berries) are very easily identifiable in fall as leaves change.  Changes in plant processes this time of year make control of these exotic, invasive species more effective in fall as well.

Fall Color and Phenology

Fall color is upon us with so many plants entering their annual push toward winter dormancy and putting on a great display in the meantime.  As deciduous plants show their true colors this time of year, it offers the observer an opportunity to quickly identify many species by the color and...
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