Healthy plants depend on healthy soil. No-dig gardening cares for soil by cutting out the need for cultivation. So put away your spade, and gain the benefits of improved soil health that will allow all your plants to thrive. No-dig growing is often less work and can benefit the environment.
Digging damages soil structure by destroying natural drainage channels made by worms, disturbing fungal networks, and releasing carbon that’s locked in the soil. Reducing soil cultivation through no-dig gardening preserves and improves the soil structure, greatly improving its overall health. In the past it was thought necessary to dig soil, particularly to prepare new beds for growing ornamental plants, fruit and vegetables. Now, scientific evidence shows us that cultivation damages soil structure and disrupts the natural processes that occur within it. This makes no-dig a better choice for soil health by minimising disturbance.
You can make new no-dig beds at any time of year, but late winter (February or early March) is best as long as the soil isn’t waterlogged. To start from scratch where you have an area of grass or weeds, lay a double layer of cardboard on top of the soil. Overlap the sheets of cardboard to help prevent weeds pushing through the gaps. Avoid using shiny printed cardboard, and be careful to remove any staples or parcel tape first. Create or extend existing beds by smothering grass and/or weeds with a double layer of cardboard, weighted down with mulchWeight the cardboard down by applying a thick mulch (10-15cm of organic matter) on top. If you want to plant up the bed straight away, wet the cardboard before adding the mulch on top. The cardboard will suppress most weeds, but keep an eye on the bed, removing any weeds that appear as soon as possible before they become well-rooted or seed themselves. If you’re converting an existing bed to no-dig, there’s no need to cover with cardboard, unless it’s particularly weedy. Simply spread a thick (10-15cm) layer of organic matter over the soil. Top tipFor convenient access, make your no-dig bed around 1.2m wide. Paths about 45cm wide between beds can help to improve access and remove the need for mowing between beds. Beds can be as long as you wish, depending on available space.No-dig gardening works well with beds at ground level, since plants can root directly into the soil below (including soil that’s beneath paths). However, raised beds are still an advantage on heavier, poorly drained soils that are prone to waterlogging, as they drain better. Top tipUsing organic matter produced in your own garden by composting avoids the fossil fuel emissions and plastics of purchased products. This helps to ensure a climate-positive approach to no-dig gardening.
For convenient access, make your no-dig bed around 1.2m wide. Paths about 45cm wide between beds can help to improve access and remove the need for mowing between beds. Beds can be as long as you wish, depending on available space.
Using organic matter produced in your own garden by composting avoids the fossil fuel emissions and plastics of purchased products. This helps to ensure a climate-positive approach to no-dig gardening.
No-dig preserves and supports the existing soil structure and fauna through minimal cultivation, while at the same time improving it with the addition of organic matter. It’s mainly used for growing vegetables, but can be used anywhere in the garden as a way to care for your soil. The use of organic matter, applied as mulch to the soil surface, feeds soil fauna and fungi, which in turn release nutrients that plants can use. For this reason it works well with any size garden and whatever your soil type.
While there are many benefits of no-dig, there are some drawbacks to be aware of. The no-dig method can use large quantities of organic mulch – this can have an associated environmental cost of production and transportation when bought in. For this reason, home composting to make your own mulch is best. Even with homemade compost, studies have shown that spreading mulch in autumn can be wasteful of nitrogen, an essential plant nutrient. Winter rains wash out nitrogen, so aim to mulch in late winter rather than in autumn. Mulching at this time releases the soluble nutrients (including nitrogen) from the mulch just as plants begin to grow away in spring. If you don’t have enough homemade mulch, don’t worry about doing no-dig everywhere in your garden. You could use a green manure or add what organic matter you can, when you can – it’s a step in the right direction. Use your hoe to slice weeds off close to the soil surface to minimise soil disturbance
Wisley garden manager Sheila Das debunks common no-dig mysteries
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