A New Year! Resolve to Keep it Clean

We've had an unusual amount of rain recently, which is both good news and bad news. Restoring depleted  water supplies is always a good thing, but how about the bad? Have you thought about the unexpected negative effects this rainfall may provide our lakes and streams? How on earth can organic yard waste contaminate bodies of water? On the Central Coast, rain flows across lawns or hard surfaces such as rooftops, paved areas, and bare soil. As it flows, this runoff water carries sediments, leaves, grass clippings, litter, and other landscape waste into streets and gutters leading to storm sewers. Unlike household wastewater, stormwater runoff receives almost no treatment. As a result any particles that enter the storm drain will probably end up in a stream or lake.

 

We have a problem when excess nutrients allow the growth of algae and rooted plants in lakes and streams. Too much algae in the water can use up valuable oxygen, kill fish, create bad odors, toxin production, and ugly surface scum.  Too many rooted aquatic plants can clog boat props, hamper fishing, pollute beaches and limit fish growth. Although plant material and nutrients slowly build up in lakes and streams, a neighborhood or community with poorly managed yard waste practices can be a major contributor to the problem and cause unnecessary degradation of lakes and streams.

What is Landscape Waste?

Sources of landscape waste include grass clippings, leaves, tree and shrub trimmings, organic mulch, and plant materials from vegetable and flower gardens. By weight, grass is the largest component averaging half of all yard waste. Leaves and brush each provide nearly one quarter. Other landscape wastes add less than 10 percent. On average, nearly 200 pounds of yard waste is produced per person each year.

Managing Landscape Waste. Controlling organic waste and reducing potential contamination of surface water can be accomplished in several ways. One way to control landscape waste is through source reduction. Amending soil with compost, grasscycling and lawn top dressing will reduce large amounts of landscape waste.

Grasscycling is the natural recycling of grass clippings by leaving them on the lawn when mowing. Leaving grass clippings saves time, money, and protects the environment. Mowing takes less time since bagging and disposal aren’t involved. The clippings add beneficial organic matter and nutrients to soil. This in turn reduces fertilizer and water needs, which can minimize nutrient runoff entering storm drains. Be sure to cut grass when the surface is dry, keep mower blades sharp and never blow, sweep or hose clippings onto the street.

Compost benefits
Amending heavy clay soils with compost improves water infiltration and drainage by improving soil structure. Compost also absorbs water and improves the water and nutrient holding capacity of sandy soils. To conserve moisture it is essential to have soil with good water retention. In addition to improving soil structure, decomposing compost will slowly release plant nutrients. Check out Google Maps for a Harvest Blend dealer near you.

Lawn Top dressing
Topdressing the lawn is the process of adding a layer of compost to the lawn surface. Top dressing benefits the lawn as it increases soil quality, adding nutrients and oxygen to plant roots. Sandy soils will be able to retain moisture better, and so the lawn will be more resistant to drought. Clay soils will drain better, thus improving root development. Another benefit of top dressing the lawn is that it will help to even out any lumps and bumps on an uneven lawn, making the surface safe for play. Top dressing also stimulates the grass to produce new shoots, resulting in denser grass cover, which helps combat the onset of weed growth.

Top dressing with aeration: aerating a lawn before top dressing will allow nutrients in the compost to reach the soil. This is the best treatment for hard, compacted soils. Professional aerators may be rented from equipment supply centers.

Using Landscape Waste as Mulch
Using an organic mulch can help gardens in many ways. Mulch reduces weeds by cutting off their oxygen, so they’re unable to grow. Mulch also maintains consistent moisture conditions in gardens. Water loss through evaporation is decreased and soil erosion is decreased by reducing the effect of heavy rainfall. Soil temperatures are modified by mulch. And last but not least organic mulch adds nutrients and humus to the soil as they decompose.

Tree and shrub trimmings are another source of yard waste. These materials are a greater challenge since they are woody and don’t break down easily. They need to be shredded or chipped for quicker decomposition and to reduce waste volume. Chippers and shredders may be available to rent at local landscape supply centers, so give ‘em a call. A 2- to 3-inch layer of shredded bark provides good weed control. Wood chips are slower to decay than shredded bark and can be used for pathway material in gardens. 

Limiting Landscape Waste

The best way to deal with landscape waste is to limit its production in the first place, or at least produce as little as possible. Choose trees and shrubs with their full growth in mind. Plants that need little or no pruning don’t produce much landscape waste. Sound yard waste management will benefit the landscape as well as surface and groundwater resources. No matter where you live, the size of your home, or the amount of time and money invested in the yard, everyone can do something to improve or maintain water quality.

Here are a few ways we can help insure clean water and a healthy environment through positive yard waste management.

• Add Harvest Blend Compost once or twice a year to build healthy soil and increase nutrients in the soil.
• Mow often enough to leave grass clippings on the lawn.
• Sweep grass clippings off of paved areas. Place them on the lawn or in a compost pile.
• Keep fallen leaves out of the street gutter or ditch, using them around the yard as practical or composting them.
• Do not dump yard waste down a storm drain or near surface water.
• Plan your landscape with the environment in mind, reducing intensely maintained areas.
• Recycle organic waste through sound composting practices and mulching.
• Mulch annual and perennial gardens with yard waste compost.
• Use organic mulch to suppress weeds, conserve soil moisture, and reduce soil erosion.

Have questions or concerns about compost use? Visit our website for more info. Naturally!