Ashleigh Smith + photo

Ashleigh Smith

Aug 2
6 min read
bubble 3
green field of oats
Chelsea Hafer Written By Chelsea Hafer

In the quest for sustainable agriculture and mitigating climate change, farmers and land managers are increasingly turning to cover crops as a powerful solution. Cover crops, also known as green manure, are non-cash crops grown primarily to benefit the soil and environment rather than for sale. These crops play a crucial role in preserving soil health, reducing greenhouse gas emissions, and conserving natural resources.

Come alongs as we explore the concept of cover crops, their significance in combating climate change, and delve into the benefits of incorporating cover crops into agricultural practices. Cover crops are key to paving the way towards a more sustainable and resilient future.

Climate Challenge and the Role of Cover Crops

As the global climate crisis intensifies, agriculture is both a victim and a contributor to climate change. Rising temperatures, changing precipitation patterns, and extreme weather events can lead to reduced crop yields, increased pests and diseases, and shifts in suitable agricultural zones. Meanwhile, the chemical inputs and monoculture of today’s conventional food production system contribute to greenhouse gas emissions, soil degradation, and water pollution.

Cover crops offer a sustainable alternative that can help tackle these challenges. By capturing carbon dioxide from the atmosphere and sequestering it in the soil, cover crops offset carbon emissions. Furthermore, their dense root systems enhance soil structure, reducing erosion and nutrient loss. A 2017 review found that cover crops can significantly mitigate warming by around 100 to 150 g CO2 e/m2/year, surpassing the effects of transitioning to no-till farming. According to the USDA, widespread adoption of cover crops could mitigate 10% of agricultural greenhouse gas emissions. With an increasing focus on regenerative agriculture and carbon farming, the role of cover crops as a climate solution is gaining traction worldwide.

benefits of cover crops

Benefits of Incorporating Cover Crops

Improved Soil Health

Cover crops are fantastic for soil health, and are a cornerstone for regenerative agriculture. Their extensive root systems not only stabilize the soil structure, but also enhance soil microbial activity, boosting nutrient cycling. Cover crops such as clover and vetch are particularly beneficial, as they have the ability to fix nitrogen from the atmosphere into the soil, reducing the need for synthetic fertilizers. This leads to healthier and more fertile soils that increase crop yields and better overall plant health.

Weed Suppression and Pest Management

Another advantage of cover crops is their ability to suppress weeds and manage pests naturally. By smothering weeds, cover crops reduce competition for resources with other crops, minimizing the need for herbicides. Certain cover crops, like mustard, release natural compounds that deter pests, helping to maintain a balanced and biodiverse ecosystem within the farmland.

Water Conservation

In regions prone to drought or water scarcity, cover crops play a vital role in water conservation. According to the Sustainable Agriculture Research and Education, cover crops offer several benefits when it comes to water conservation: “A living cover crop traps surface water. When killed and left on the surface, cover crop residue bumps up water infiltration and lessens both erosion and evaporation. When incorporated into soil, residue adds organic matter that boosts infiltration to the root zone.” This not only conserves water but also reduces the irrigation requirements for other crops, making agriculture more resilient to changing climate conditions.

Types of Cover Crops

There are several main kinds of cover crops, and each kind can provide certain benefits in the garden. Using a diverse mix of cover crops is widely accepted as the best approach. In the following section, we will explore three essential types of cover crops that offer a multitude of benefits for sustainable agriculture and climate resilience.

Leguminous Cover Crops

Leguminous cover crops, including clover, vetch, and peas, are nitrogen-fixing plants that significantly contribute to soil fertility. Their symbiotic relationship with nitrogen-fixing bacteria allows them to convert atmospheric nitrogen into a form that can be used by plants, enriching the soil with this essential nutrient. As a result, farmers can reduce their reliance on synthetic nitrogen fertilizers, which are energy-intensive to produce and can lead to nitrogen runoff polluting waterways and releasing greenhouse gas emissions.

Brassica Cover Crops

Brassica cover crops, such as mustard and radish, offer numerous benefits, including pest management and soil conditioning. Brassicas help manage pests naturally and condition the soil, making it healthier for future crops. They produce a compound called glucosinolates that naturally inhibit the growth of weeds. When these cover crops are incorporated into the soil after use, they release natural compounds that act as a natural pest repellent, reducing the need for harmful chemicals. Additionally, the deep taproots of brassicas improve soil aeration and water absorption, helping to prevent erosion.

Grass Cover Crops

Grass cover crops, like rye and oats, are excellent for weed suppression and erosion control. Their fibrous root systems form a dense mat that prevents weeds from taking hold, reducing competition with other crops. Furthermore, grass cover crops help hold soil in place during heavy rainfall, minimizing soil erosion and nutrient runoff. Their ability to scavenge nutrients from deeper soil layers makes them valuable in capturing excess nutrients, preventing nutrient leaching and improving water quality.

Cover crops are a remarkable climate solution that addresses multiple environmental challenges faced by agriculture. By enhancing soil health, reducing greenhouse gas emissions, conserving water, and promoting biodiversity, cover crops contribute significantly to the fight against climate change. Small-scale use of cover crops in home gardens is an easy way for individuals to practice regenerative agriculture and contribute to combating climate change on a personal level. As we embrace regenerative practices and look towards a more sustainable future, the incorporation of cover crops will undoubtedly play an important role in creating a healthier planet for generations to come. To learn more about growing cover crops, check out our Free Cover Crop Growing Guide.

Author Bio

Chelsea Hafer, True Leaf Market Writer

Chelsea is a passionate advocate for sustainable agriculture and loves getting her hands dirty and watching things grow! She graduated from Georgetown University in 2022 with a degree in Environmental Justice and now resides in Park City, Utah, where she works as a ski instructor. Her love for nature extends to gardening and hiking, and she has gained valuable insights from working on farms in Italy, Hawaii, and Mexico, learning various sustainable agriculture techniques like permaculture and Korean Natural Farming.

Our Recommended Picks

Leave a comment

Your email address will not be published. Required fields are marked *

3 comments

andrew jacobson

Planting a cover crop is very beneficial for the soil, weed management etc. But from everything I have learned, climate change is a natural cycle that happens from factors beyond mans control. For instance the earth’s magnetic field is in a process of weakening allowing more solar and cosmic radiation to penetrate through the atmosphere. The sun is more intense than it was when I was a young man thirty or forty years ago. Don’t get sucked into the hype that man is causing global warming and climate change. The climate has always been in a process of changing and always will be, and man currently does not possess the power to mitigate that.


Patricia Ames

How do I keep gophers and birds from eating my cover crops?


David Fuertes

Thank you for valuable info. I have 501c3 working with youth in Agri . Seeking for funding to pursue cover cropping in Hawaii?


  1. Grass to Garden: Transforming Your Outdoor Space With Raised Bedsraised beds filled with leafy greens

    Grass to Garden: Transforming Your Outdoor Space With Raised Beds

    Written By Lara Wadsworth Looking to turn your lawn into a productive, easy-to-manage garden? One of the best ways to convert grass, turf, or weeds into a flourishing garden space is by using raised garden beds. Whether you’re dreaming of fresh vegetab...


    Ashleigh Smith + photo

    Ashleigh Smith

    2025-06-24
    6 min read
    bubble 1
  2. How to Protect Your Garden from Heat Stress: Summer Plant Care Tipswoman gathers a summer harvest from the garden

    How to Protect Your Garden from Heat Stress: Summer Plant Care Tips

    Written By Lara Wadsworth Summer is here, and the heat is turning up. As the sun becomes more intense and daytime temperatures routinely soar, some plants struggle to cope. Sunburn, sunscald, leaf scorch, and heat stress are common problems that plants...


    Ashleigh Smith + photo

    Ashleigh Smith

    2025-06-17
    8 min read
    bubble 0
  3. Maximize Your Garden with the French Intensive MethodFrench Raised Bed Garden

    Maximize Your Garden with the French Intensive Method

    Written By Lara Wadsworth There are many ways that people online claim to maximize garden space, including everything from container gardening to square-foot gardening. There are books galore written about how to get the most out of each square foot of...


    Ashleigh Smith + photo

    Ashleigh Smith

    2025-06-11
    8 min read
    bubble 0
  4. Top Nutrient-Dense Foods and Why You Should Eat ThemWatercress microgreens white background

    Top Nutrient-Dense Foods and Why You Should Eat Them

    Written By Lara Wadsworth In today’s world of health trends, dieting, and fitness fads, one essential element is often overlooked: nutrients. Nutrients are the foundation of true wellness—fueling every organ, supporting immune function, and enabling bo...


    Ashleigh Smith + photo

    Ashleigh Smith

    2025-06-10
    7 min read
    bubble 0