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GroCo makes an excellent mulch for gardens and landscapes.
Uses for GroCo Gardening Biosolids compost improves soil characteristics and encourages vigorous plant growth in both planting beds and flower pots. GroCo also contains plant nutrients such as nitrogen, phosphorus, potassium, iron, calcium, magnesium and zinc. GroCo is not a commercial chemical fertilizer, and nutrient analyses represent an estimate, not a "guaranteed analysis." Much of the nutrients present in GroCo exist in more complex organic form, providing a "slow release" of nutrients as the biosolids compost breaks down, often establishing a longer-lasting nutrient supply than traditional chemical fertilizers. GroCo is used in community garden projects, such as Seattle's Alleycat Acres, shown below:  
How do I use GroCo compost? As a soil conditioner: - Loosen existing soil; spread compost 1 to 3 inches deep on the area you will be planting, then till or spade into the soil
- For individual planting of your shrubs and trees, mix GroCo half-and-half with existing soil
As a lawn conditioner: - Spread up to 1 inch of GroCo over your lawn in early spring or fall.
In container gardens, window boxes and potted plants: - Combine equal parts of GroCo with sandy loam soil and place in container.
Landscaping GroCo compost has many uses, on golf courses and parks, in home and school gardens and to enhance highway medians. Biosolids compost can be used as a soil conditioner and as a mulch around plantings. By increasing soil aeration, compacted soils are made more porous. Sandy soils benefit from the addition of organic matter which improves water retention.  
Students at Kent-Meridian High School rejuvenated their school courtyard landscape using GroCo.
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