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Where does shredded mulch come from?

Wood Mulch Products

Each year, homeowners and landscapers use mountains of shredded bark mulch in shrub and and flower beds, around trees, and in nurseries.

In addition to improving the aesthetics of a landscape, mulch helps prevent erosion, controls weeds, adds organic matter and holds moisture in the ground.

 

  
Single - Double - Triple - Shredded Mulches

Shredded bark mulch is usually sold as single, double or triple shredded, with the single shredded being the coarsest and the triple shredded the finest. Single shredded is the form of mulch that comes directly from the saw mill. Double and triple shredded mulches are created by regrinding the mulch in a tub grinder, further reducing the particle size.

Even though single shredded mulch is much less uniform with more large pieces of bark mixed into the product, it does last the longest when applied to landscape beds. The finer ground mulches are more popular due to their more uniform particle size, but they do tend to break down more rapidly.

Shredded bark mulch is a by-product of the timber industry. Before rough cut logs can be moved into a saw mill to be cut into lumber, they must first have the tree bark removed. This debarking process not only removes the unwanted bark, it also removes dirt and debris which may otherwise damage circular saw blades in the milling process.

Below are six photos of the step-by-step process used in producing shredded mulch.


Saw logs are stockpiled according to the wood type
  
A front end loader is used to move rough cut logs
  
Logs are lined-up on a platform for debarking
  
One by one the logs are fed onto a roller system
  
The debarker moves back and forth removing the bark
  
The shredded bark travels by conveyor belt onto a truck
  
Tree Bark

 

  

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