Advanced Micro Polymers Inc.

Natural Polymers to help preserve our environment
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Liquid Mulch test Results in Landscaping
Monday August 9th, 2010
Alot of work has been going on during this growing season with Liquid Mulch. The first test results to come back relate to its use by Landscape Professionals. A direct comparison to cedar bark mulch was made. The effectiveness of Liquid Mulch was as follows:
Equivalent Weed Control
Red Cedar Mulch Bed Depth
Liquid Mulch AMP753 Addition Rate
# of Weeds in entire bed
5 cm (2 inches)
1.5 Kg per square meter (0.3 lbs per square foot)
8 to 12 
10 cm (4 inches)
2 Kg per square meter (0.4 lbs per square foot)
4 to 7
15 cm (6 inches)
2.5 Kg per square meter (0.5 lbs per square foot)
0 to 3 
Both the cedar bark mulch and the Liquid Mulch were applied unto a weed free garden bed composed of a mixture of 1/3 top soil, 1/3 peat moss and 1/3 compost. The primary plants in the beds were hostas and each bed was about 2 square meters (22 square feet). All beds were side by side with equal weed pressure. Visit our Liquid Mulch Application section for more application information or contact us.
Therefore, a cedar mulch bed depth of 6 inches is approximately equivalent to a Liquid Mulch appliction of 2.5 Kg per square meter.