Imagine creating a sustainable garden that thrives with minimal effort and resources. Woodchips, often overlooked, can be a game-changer in permaculture practices. By harnessing the power of woodchips, you can improve soil quality, conserve water, control weeds, and even enhance the beauty of your garden. In this article, we will explore the various ways you can utilize woodchips in permaculture to create a thriving and eco-friendly landscape that will leave you amazed. So, get ready to unlock the secrets of using woodchips in permaculture and transform your garden into a haven of sustainability.

Types of Woodchips

Hardwood vs. Softwood

When using woodchips in permaculture, it’s important to consider the type of wood you’re using. Hardwood and softwood chips have different characteristics that can affect their performance in the garden.

Hardwood chips are generally more durable and take longer to break down, making them a great long-term option for garden beds. Softwood chips, on the other hand break down more quickly, which can make them a good choice for adding organic matter to the soil.

Fresh vs. Aged Woodchips

Another consideration when using woodchips is whether to use fresh or aged chips. Fresh woodchips are those that have recently been chipped and haven’t had time to decompose. While they can be used in permaculture, fresh chips can tie up nitrogen in the soil as they undergo decomposition, potentially leading to nitrogen deficiency in plants.

Aged woodchips, on the other hand, have had time to decompose, and the nitrogen tie-up is less of a concern. They have a darker, more decomposed appearance and are often more crumbly in texture. Aged chips also tend to have a richer microbial population, which can benefit the soil.

Chip Size and Texture

The size and texture of woodchips can also impact their effectiveness in permaculture. Larger chips take longer to break down, providing a longer-lasting mulch. They also tend to create a more textured surface, which can help with weed suppression.

Finely shredded woodchips, on the other hand, decompose more quickly and integrate into the soil faster. They create a smoother mulch layer and may be preferable for certain aesthetic preferences. Ultimately, the size and texture of the woodchips you choose will depend on your specific needs and goals in your permaculture garden.

Benefits of Using Woodchips

Moisture Retention

One of the key benefits of using woodchips in permaculture is their ability to retain moisture in the soil. When applied as a mulch, woodchips create a protective layer that reduces evaporation and helps to keep the soil evenly moist. This can be especially beneficial in arid climates or during dry periods.

Weed Suppression

Woodchips also offer excellent weed suppression properties. When applied at a sufficient depth, woodchips create a physical barrier that inhibits weed growth by blocking sunlight. Additionally, as the woodchips break down, they release natural chemicals that can further inhibit weed germination and growth.

Soil Health Improvement

The use of woodchips in permaculture can significantly improve soil health. As the chips decompose, they release organic matter into the soil, which enhances soil structure and fertility. Woodchips also provide habitat for beneficial soil organisms such as earthworms, which help to aerate the soil and break down organic matter.

Temperature Regulation

Woodchips play a role in regulating soil temperature. During hot weather, the mulch layer created by woodchips helps to insulate the soil, keeping it cooler and preventing rapid moisture evaporation. In colder climates, woodchips act as an insulator, protecting the soil and plant roots from freezing temperatures.

Nutrient Cycling

Woodchips contribute to the nutrient cycling process in permaculture systems. As the chips decompose, they release nutrients such as nitrogen, phosphorus, and potassium, making them available to plants. This natural cycling of nutrients reduces the need for synthetic fertilisers and supports a more sustainable and self-sufficient gardening approach.

Preparing Woodchips for Permaculture

Sourcing Woodchips

When preparing woodchips for permaculture, it’s important to consider their source. Ideally, the wood chips should come from untreated or naturally fallen trees. Avoid using wood chips from trees that have been treated with chemicals such as herbicides or pesticides, as these can be harmful to the soil and plants.

Composting or Mulching?

Deciding whether to compost or use woodchips as mulch depends on your specific goals and preferences. Composting woodchips can help accelerate the decomposition process, resulting in a more broken-down organic matter that can be incorporated into the soil more easily. Mulching with woodchips, on the other hand, provides immediate benefits of weed suppression, moisture retention, and soil improvement.

Age and Decomposition Process

The age and decomposition process of woodchips can affect their performance. Fresh woodchips still undergoing decomposition can tie up nitrogen in the soil, potentially affecting plant growth. Aged woodchips, which have had time to decompose, are generally more stable and have a reduced impact on nitrogen availability.

Avoiding Treated or Contaminated Woodchips

It’s crucial to avoid using woodchips from treated or contaminated sources. Chemical treatment or contamination can introduce harmful substances into the garden, which may have adverse effects on plant health, soil biology, and even human health. Always source woodchips from reputable suppliers who can provide information on the origins and treatment of the wood.

Applying Woodchips in Garden Beds

Clearing the Area

Before applying woodchips in garden beds, it’s important to clear the area of existing vegetation and weeds. This will prevent competition between the plants and ensure that the woodchips are in direct contact with the soil.

Layering Woodchips

To maximise the benefits of woodchips, it’s recommended to apply them in layers. Start with a layer of cardboard or newspaper to act as a weed barrier and prevent grass and weeds from growing through the woodchip layer. Then, apply a thick layer of woodchips, around 5-10 centimetres deep, ensuring the soil is completely covered.

Mulching Techniques

There are different mulching techniques that can be used when applying woodchips to garden beds. One common technique is the “hügelkultur” method, where woodchips are layered with other organic materials such as leaves and compost to create a raised bed. Another technique is the “lasagna mulching” method, where alternating layers of woodchips and other organic materials are stacked, mimicking the layering of a lasagna dish.

Watering and Irrigation Considerations

When using woodchips as a mulch, it’s important to adjust your watering and irrigation practices accordingly. Woodchips act as a barrier, reducing water evaporation from the soil. Therefore, you may need to water less frequently but for longer durations to ensure that the water reaches the plant roots effectively.

Managing Woodchip Depth

Over time, woodchips will break down and decompose, reducing their initial depth. It’s important to monitor the woodchip depth regularly and add additional woodchips as needed to maintain the desired mulch layer. This will ensure the continued benefits of weed suppression, moisture retention, and soil improvement.

Using Woodchips as Pathways

Creating Walkways

Woodchips can also be used effectively as pathways in permaculture gardens. They provide a natural and aesthetically pleasing surface for walking, preventing soil compaction and allowing water to penetrate into the ground. To create walkways, simply spread woodchips evenly over the desired area, ensuring a sufficient depth for comfortable walking.

Applying Weed Barrier

To effectively suppress weeds in woodchip pathways, it’s recommended to apply a weed barrier before adding the woodchips. This can be done using cardboard or landscaping fabric, which prevents weed growth from underneath the woodchip layer. A weed barrier also helps maintain a clean and attractive pathway appearance.

Maintaining Woodchip Paths

Regular maintenance is necessary to keep woodchip paths in good condition. Periodically rake or replenish the woodchips to maintain an even and smooth surface. Clear any fallen leaves or debris that may accumulate on the pathways to prevent slips or tripping hazards.

Woodchip Applications for Trees and Shrubs

Creating Tree Mulching Rings

One of the most common uses of woodchips in permaculture is creating mulching rings around trees and shrubs. Woodchip mulch placed around the base of these plants helps retain moisture, suppress weeds, regulate soil temperature, and improve soil health. When creating mulching rings, make sure the woodchips are not piled against the trunk, as this can cause rot and damage.

Woodchip Berms

Woodchip berms can be used to create raised planting areas for trees and shrubs. By creating a berm around the planting area and filling it with woodchips, you create a designated space for the plant’s roots to occupy. Woodchip berms provide excellent drainage and aeration for the plant roots, while also providing the benefits of moisture retention and weed suppression.

Fertilising and Nutrient Release Rates

Woodchips slowly release nutrients into the soil as they decompose. This gradual nutrient release can be beneficial for trees and shrubs, providing a consistent and steady supply of essential elements. However, it’s important to monitor nutrient levels and supplement with additional fertilisers if necessary, as some plants may have specific nutrient requirements.

Woodchips in Composting

Carbon-Nitrogen Balance

When it comes to composting, woodchips play a crucial role in achieving the right carbon-nitrogen balance. Woodchips are a high-carbon material, while nitrogen-rich materials like green leaves or kitchen scraps provide the necessary nitrogen. By layering woodchips with other compostable materials, you create an ideal environment for decomposition and nutrient-rich compost production.

Layering Woodchips in Compost Piles

When building a compost pile, layering woodchips with other organic materials is essential. Alternate layers of woodchips, kitchen scraps, grass clippings, and other compostable materials to provide the right balance of carbon and nitrogen. The woodchips will help with aeration and moisture retention, ensuring a healthy and efficient composting process.

Tumbling and Turning Compost

When using woodchips in composting, it’s important to regularly tumble or turn the compost pile. This helps with the decomposition process, allowing the woodchips to break down faster and integrate into the compost. Turning the compost also helps to aerate the pile and prevent anaerobic conditions that can impede decomposition.

Using Woodchips as Compost Cover

Woodchips can also be used as a cover for compost piles to help with moisture retention and temperature regulation. Simply spread a layer of woodchips on top of the compost pile to keep it insulated and protected from extreme weather conditions. The woodchips will also deter pests and help maintain a consistent composting environment.

Woodchip Considerations for Specific Plants

Fruit Trees and Woodchip Mulch

Woodchip mulch is particularly beneficial for fruit trees. The thick layer of mulch helps conserve soil moisture, reduces competition from weeds, and enhances soil fertility. However, it’s important to keep the woodchips away from the tree trunk to prevent rot and fungal diseases. Leave a small gap around the tree base to allow for air circulation.

Woodchips and Acid-Loving Plants

Woodchips can be used for acid-loving plants like blueberries, rhododendrons, and azaleas. As the woodchips break down, they contribute to the acidity of the soil, creating a more favourable environment for these plants. However, it’s crucial to monitor the soil pH regularly and adjust as necessary to maintain optimal conditions for acid-loving plants.

Woodchips for Vegetable Gardens

Woodchips can also be used in vegetable gardens, providing benefits like moisture retention, weed suppression, and soil improvement. However, it’s important to consider the specific needs of different vegetable crops. Some vegetables prefer a more fertile soil with higher nutrient availability, so it may be beneficial to mix the woodchips with additional compost or fertilisers to meet their requirements.

Maintenance and Monitoring

Woodchip Degradation

Woodchips will gradually break down and decompose over time. It’s essential to monitor the woodchip degradation process regularly and replenish the mulch layer as needed. As the woodchips break down, the mulch layer may become thinner, reducing its effectiveness in terms of weed suppression and moisture retention.

Detecting Nitrogen Imbalances

Using woodchips in permaculture can lead to temporary nitrogen imbalances in the soil. This is especially true when using fresh woodchips that are still undergoing decomposition. It’s important to monitor plant health for any signs of nitrogen deficiency, such as yellowing leaves or stunted growth. If needed, additional nitrogen can be provided through organic fertilisers or nitrogen-rich amendments.

Regular Inspections

Regular inspections of the garden beds, pathways, and tree mulching rings are crucial to ensure the woodchips are performing their intended functions. Check for any signs of weed growth, excessive moisture build-up, or woodchip depletion. Regular inspections allow for timely adjustments and maintenance, ensuring the long-term benefits of using woodchips in permaculture.


Woodchips are a versatile and valuable resource in permaculture gardening. They offer numerous benefits, including moisture retention, weed suppression, soil health improvement, temperature regulation, and nutrient cycling. Their applications range from mulching garden beds and creating pathways to using them in tree mulching rings and composting. By following the proper preparation and application techniques, and regularly monitoring and maintaining the woodchip layers, you can harness the full potential of woodchips in your permaculture garden. Embrace the natural and sustainable advantages of woodchips and see your garden flourish with health and vitality.