Don't Bag It — Use It
Every autumn, millions of UK households bag up fallen leaves and put them out for collection — missing out on one of the garden's most valuable free resources. Fallen leaves are nature's mulch: a slow-release soil conditioner, wildlife habitat, and weed suppressant all in one. With a little effort, the leaves that fall in your garden this autumn can be transformed into something your plants will love next year.
This guide covers the best ways to collect, store, and use autumn leaves — and which leaves to treat with caution.
Why You Shouldn't Leave Leaves Everywhere
While leaves are valuable, leaving them where they fall isn't always the right approach:
- On lawns — a thick layer of wet leaves will block light and air, killing grass beneath. Clear leaves from lawns promptly and regularly through autumn
- On low-growing plants — heavy leaf cover can smother alpines, strawberries, and other low-growing plants; remove leaves from these areas
- On ponds — decomposing leaves deplete oxygen and release toxins harmful to pond life; net your pond or remove leaves regularly
- On paths and drives — wet leaves are dangerously slippery; clear regularly for safety
Under hedges, in borders, and around the base of trees and shrubs, however, leaves can be left to break down naturally — just as they would on a woodland floor.
How to Collect Leaves Efficiently
Raking
The traditional method — a wide, fan-headed lawn rake covers ground quickly and is ideal for open areas. Rubber-tined rakes are gentler on grass and won't scratch hard surfaces. For large gardens, a wheeled lawn sweeper can collect leaves in a fraction of the time.
Lawn Mower Collection
If you have a lawnmower with a grass box, run it over fallen leaves to collect and shred them simultaneously. Shredded leaves break down much faster than whole ones — this is one of the quickest ways to turn a large volume of leaves into usable leaf mould. Aim to mow when leaves are dry for best results.
Leaf Blowers and Vacuums
A leaf blower makes light work of clearing large areas, corralling leaves into piles for collection. Many models double as vacuums with a shredding function, which is ideal for composting. Battery-powered models are quieter and more environmentally friendly than petrol alternatives.
Leaf Grabbers
Large hand-held leaf grabbers — essentially oversized tongs — make picking up piles of leaves much easier on the back. A simple but surprisingly effective tool for smaller gardens.
What to Do with Collected Leaves
Make Leaf Mould
Leaf mould is the best use for most autumn leaves. It's simple to make, requires almost no effort, and produces a superb soil conditioner and mulch after 1–2 years.
Method 1: Wire cage — knock four posts into the ground and wrap with chicken wire to create a simple enclosure. Fill with leaves, firm down, and leave. The open sides allow airflow and rain to keep the leaves moist.
Method 2: Black bin bags — fill black bin bags with damp leaves, tie loosely, and pierce with a garden fork to allow airflow. Stack in an out-of-the-way corner and leave for 1–2 years. Simple, cheap, and effective.
After one year you'll have a rough, partially broken-down leaf mould ideal for mulching. After two years it will be fine and crumbly — perfect for mixing into potting compost or using as a seed-sowing medium.
Add to the Compost Heap
Leaves are a valuable 'brown' (carbon-rich) material for the compost heap. Add them in layers with nitrogen-rich 'greens' like grass clippings or kitchen waste. Shredded or mown leaves break down much faster than whole ones. Avoid adding too many leaves at once — thick layers can mat together and slow decomposition; mix well with other materials.
Use as a Mulch Directly
Whole or partially shredded leaves can be spread directly around trees, shrubs, and in borders as a mulch. Apply a 5–10cm layer, keeping it away from plant stems. This suppresses weeds, retains moisture, and slowly improves the soil as it breaks down — mimicking the natural woodland floor process.
Create Wildlife Habitat
A pile of leaves in a quiet corner is one of the most valuable wildlife habitats you can create in a UK garden. Hedgehogs use leaf piles for hibernation nests; slow worms, frogs, and toads shelter in them; ground beetles and other beneficial insects overwinter in the leaf litter. Leave at least one undisturbed pile through winter — ideally under a hedge or in a sheltered corner.
Which Leaves Are Best for Leaf Mould?
Most deciduous tree leaves make good leaf mould, but they vary in how quickly they break down:
- Fast to break down (1 year): oak, beech, hornbeam, alder — these are the best leaves for leaf mould
- Slower to break down (2+ years): sycamore, horse chestnut, walnut — still usable but take longer; shred to speed up
- Evergreen leaves: laurel, holly, leylandii — very slow to break down and best composted separately or avoided; laurel leaves release toxins as they decompose
- Plane tree leaves: very slow to break down due to their waxy coating; best shredded before composting
Leaves to Handle with Care
- Walnut leaves — contain juglone, a compound toxic to some plants (particularly tomatoes, potatoes, and apples). Compost separately and use only around tolerant plants
- Diseased leaves — leaves showing signs of disease (rose black spot, apple scab) should be binned rather than composted, as many diseases survive the leaf mould process
A Simple Autumn Leaf Calendar
- September–October: Start collecting as leaves fall; set up your leaf mould cage or bags; begin adding to compost heap
- October–November: Peak leaf fall — clear lawns weekly; collect and store the bulk of your leaves
- November–December: Final clear-up; check leaf piles for hibernating hedgehogs before disturbing
- Following autumn: Year-one leaf mould ready for use as a rough mulch
- Two years on: Fine leaf mould ready for potting compost and seed sowing
Shop Leaf Collecting Equipment at Selections
Make light work of autumn leaves with our range of leaf rakes and lawn sweepers and compost bins and leaf mould cages. Turn this year's leaves into next year's best soil improver.