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College of Agricultural, Consumer & Environmental Sciences Illinois Extension

Trees

Potted plants await spring planting at the Missouri Botanical Garden nursery production area

Spring tree planting considerations

Spring is a time of an awakening plant world full of blooms and endless possibilities for the coming growing season.  It’s a time that many of us think about updating our landscaping, making it the most popular time of year to plant trees and shrubs. When you combine the mild temperatures...
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A pawpaw tree outside a brick building

How sunlight can change tree shape

Several years ago, we had an extra pawpaw tree (Asimina triloba) after all the plants were distributed at the East Central Illinois Master Naturalist’s Annual Native Tree and Shrub sale. Since this poor tree had no home, we decided to plant it outside one of the staff entrances at the...
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Brown leaves hanging off an oak tree that were damaged by cicadas

How to identify cicada damage on trees

The signs of this year’s historic cicada hatch are still around, although all of our periodic cicadas are now quietly underground, feeding away on tree roots for the next 13 years.  After piles of molted shells and dead adult cicadas earlier in the summer, we are now seeing their signature on...
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Magnolia scale on a magnolia tree.

Managing Magnolia Scale

Magnolias are some of the most popular ornamental trees across the US.  Known for spectacular flowering displays, they come in various shapes and sizes, from smaller shrub-sized plants to medium-sized shade trees.For the most part, these trees are usually a pretty safe bet in Illinois gardens...
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A picture of tree roots that have been pulled out of the ground

Clearing misconceptions around tree roots

Roots are always underfoot, whether it’s a forest or prairie, your yard, or a local park; these all-important plan structures fill the upper layers of soil and quietly do their work to support the plant world.  Since they are often “out of sight, out of mind,” there are many common...
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College of Agricultural, Consumer & Environmental Sciences Illinois Extension

101 Mumford Hall (MC-710)

1301 W. Gregory Dr.

Urbana, IL 61801

Email: extension@illinois.edu

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