Soil Decompaction and Amendment for Urban Trees
We’ve all seen them: street trees planted with the best of intentions in compacted urban soil. Instead of shading the street with cooling canopies, they struggle to merely survive. What can we do to help? Can we improve the physical structure of urban soils without damaging tree roots? Here we report on the early results of a soil decompaction study conducted at four cities in the eastern United States. The results suggest that one technique isn’t enough. To achieve measureable improvements in tree condition, we need to use every tool in the arsenal.
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Fertilization in the Landscape
Why do urban trees need to be fertilized? Forest trees evolved without the apparent addition of fertilizer, which can give the erroneous impression that trees, in general, do not require fertilizer. In reality, forest trees are being fertilized through the natural process of recycling.
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Should I fertilize my trees?
Trees often require fertilization at some point in their life span. Remember, most trees' natural environment is the forest. There nutrients are continually recycled as leaves and other plants, and even animal material, fall and decompose on the forest floor.
Read how to replenish the soil for your trees...
Soil composition and fertilization:
Sometimes fertilizing isn't the answer
Before recommending a fertilizer, the arborist may note that other problems need to be addressed. An improper soil pH often makes it more difficult for a tree’s roots to absorb needed nutrients, even when those nutrients are abundant in the soil.
Read more about soil composition....
Fertilization Standards: Learn about ANSI Standards
As a consumer, how do you know your arborist is fertilizing correctly? Too much, too little, or the wrong kind may harm your trees.
Learn about the standard....
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