Wood Chips: From Clearing Waste to Valuable Resource

Every land clearing job produces wood. For a long time, most of it was burned or dumped. Today, chipped wood is a product with real uses on farms, on estates and in industry.

Here is where wood chips earn their keep, and how to choose the right chips for the job.

What wood chip biomass is

Biomass is plant material that is used for energy or returned to the land. Wood chips are one of its most practical forms: the timber and branches from clearing, cut into pieces that are easy to move, spread, store and feed into machines.

How wood chips benefit plants and soil

• They hold moisture. A layer of chips shades the soil and slows evaporation, which matters during the long dry months on the Highveld.
• They keep soil temperature more even, protecting roots from the hottest days and coldest nights.
• They suppress weeds by blocking the light that weed seeds need to grow.
• They protect bare soil from heavy rain and wind, which reduces erosion.
• They feed the soil. As chips break down, they add organic matter and support the life in the soil.

One thing to know: while fresh chips break down, soil microbes use nitrogen at the surface. Keep chips on top of the soil instead of digging them in, and young plants may need a little extra nitrogen.

Wood chips as fuel

Dried wood chips are a proven fuel for biomass boilers that produce steam and heat for factories and processing plants. In South Africa, chips from cleared invasive trees are already used by industry as an alternative to coal.

Read our guide to wood chips as boiler fuel for what buyers look for.

Other practical uses

• Paths and access roads on farms and estates, especially in areas that get muddy.
• Erosion control on slopes and bare patches after clearing or construction.
• Composting, where chips add the carbon that balances green material.

Choosing the right chips for the job

• For mulch: mixed chips work well, but keep fresh blue gum chips away from sensitive crops.
• For fuel: chips need to be clean, consistent in size and dried to the level your boiler needs.
• For erosion control: coarser chips stay in place better on slopes.

The bottom line

Wood chips turn a clearing problem into something useful. They help plants and soil, protect bare ground and can fuel industry.

Chipperman provides commercial wood chipping and land clearing across Pretoria and Gauteng. See how wood chips help farmers.