Climate Change Mitigation – Be Part of the Solution!
In the context of climate change, mitigation means reducing the amount of carbon dioxide (CO2) and other greenhouse gases in the atmosphere. The good news is that several home gardening practices can do just that. If we all take little steps to reduce CO2 emissions, our small differences can add up.
Soil is the key to locking up carbon!
• Apply compost to increase the amount of organic (carbon) material in your soil.
• A higher organic content enhances your soil’s structure and improves its ability to hold water and nutrients.
• More soil carbon also enriches soil’s productivity – that is, its capacity to support plant growth. And vice-versa – greater productivity boosts soil carbon!
• The result? More carbon is stored in the soil, thus reducing CO2 in the atmosphere.
• Reduce tillage in addition to applying compost. This protects soil structure, preserves microbial communities, and reduces erosion, thus avoiding carbon loss.
• Further help soil store carbon by keeping it covered with plants or mulch.
Farm carbon by planting trees and shrubs
• All plants store carbon. The larger they are and the faster they grow, the more carbon they store.
• Well-placed trees provide shade and protection from winter winds. This reduces energy use for air conditioning and heating.
• Look to the slightly warmer, drier climate just inland from us to choose trees that will thrive in the future.
• Be sure to follow fire-smart landscaping principles when planting trees and shrubs.
This permeable patio allows rainwater to soak into the ground. Photo: Gardensoft
Manage water wisely
Water has a significant carbon footprint. It will also be a scarcer resource as the climate continues to warm.
• Choose plants adapted to our summer-dry/winter-wet climate. Group plants into hydrozones for efficient watering.
• Consider rainwater harvesting.
• Construct patios, walkways, and driveways with permeable materials. This allows water to soak into your garden soil, eliminating runoff.
• Similarly, bio-swales and rain gardens keep water in your land.
Meadow grasses need to be cut back only once a year. Stipa pulchra (front) or needle grass, also benefits insects. Photo: Gardensoft
Replace your lawn
• Conventional lawn care is energy-intensive, with inputs like mowing, watering, fertilizers, and pesticides.
Grow your own fruits and vegetables to cut down on fuel used to transport food. Photo: Kelley Brian, Courtesy of UC Regents
Grow your own fruits and vegetables
• You’ll cut down on fuel used to transport food. Plus, it will encourage a climate-friendly diet rich in fruits and vegetables.
• For the same benefits, buy produce that is locally grown.
Practice carbon-conscious plant care
• Use hand or electric tools to minimize fossil fuel use.
• Avoid chemical pesticides by practicing Integrated Pest Management.
• Use compost and organic fertilizers rather than synthetic chemical fertilizers.
• Propagate your own plants. Use recycled/repurposed materials for plant starts.
• Avoid potting mixes and soil amendments containing peat moss. Peat bog mining releases carbon to the atmosphere.
Turn garden waste and kitchen waste into compost – black gold for your garden! Image: Lynn Greyling, needpix.com
Manage kitchen and garden waste
• Your own compost pile provides a nutrient-rich soil amendment that helps soil store more carbon.
• If you don’t make your own compost, then use your green bin! Just keep organic waste out of the landfill, where it releases methane as it decomposes without oxygen.
• Mulch leaves and leave them in place. Leave grass clippings on the lawn.