Grasscycling
Grasscycling refers to leaving grass clippings on the lawn when mowing.
The term is a portmanteau combining "grass" and "recycling", and had come into use by at least 1990[1] as part of the push to reduce the huge quantities of clippings going into landfills, up to half of some cities' summertime waste flow,[2] as 1,000 square feet (93 m2) of lawn can produce 200 to 500 pounds (90 to 225 kg) of clippings a year.[3]
Because grass consists largely of water (80% or more[4]), contains little lignin,[4] and has high nitrogen content, grass clippings easily break down and return to the soil within one to two weeks,[3] acting primarily as a fertilizer supplement and, to a much smaller degree, a mulch. Grasscycling can provide 15 to 20% or more of a lawn's yearly nitrogen requirements.[5][6] Proponents also note that grasscycling reduces the use of plastic bags for collecting yard waste and reduces trips to the curb or landfill to haul waste.[7]
Optimal grasscycle techniques include:[3][5][8]
- Cutting no more than 1/3 the length of the grass
- Cutting when the grass is dry to the touch
- Cutting when the height is between 3 and 4 inches (7 to 10 cm)
- Ensuring that the mower blade is sharp
Although a mulching mower can make grass clippings smaller, one is not necessary for grasscycling.
See also
References
- ↑ "Grasscycling definition/etymology". Retrieved 2007-05-25.
- ↑ "Denver Recycle Grasscycle". Retrieved 2007-05-25.
- ↑ 3.0 3.1 3.2 "Rivanna Solid Waste Authority Grasscycling Info". Archived from the original on 2007-09-30. Retrieved 2007-05-25.
- ↑ 4.0 4.1 "Grasscycling FAQ". Retrieved 2007-05-25.
- ↑ 5.0 5.1 "Grasscycle!". Retrieved 2007-05-25.
- ↑ "California Integrated Waste Management Board - What is grasscycling?". Retrieved 2007-05-25.
- ↑ "King County Experience: Grasscycling". Archived from the original on 1999-11-05. Retrieved 2007-05-25.
- ↑ "Bay Delta Grass Recycling Campaign". Retrieved 2007-05-25.