How to Prepare Your Garden for Autumn: 9 Top Tips

Autumn is an extremely important time for your garden as you start planting ahead and setting things in place for the year to come.

There are a few things that you can do at this time that will make a huge difference to how your garden looks next spring, and how well it copes with the cold months in between. 

Helping you make the right decisions is our resident flower expert David Denyer with his complete autumn checklist.


1. Tidy borders, but don't strip them bare

First on the list is tidying borders and removing anything that's clearly finished: annuals that have gone over, diseased foliage and weeds that will happily set seed if left. 

You might find your perennials have collapsed, cut these back too.

Don’t remove everything though, plants such as sedum, echinacea and ornamental grasses look great with frost on their seed heads, and they'll provide food and shelter for birds and insects through the winter.

Hydrangeas are a good example, leave the old flower heads on to protect next year's buds, for more info, refer to our full hydrangea care guide.

 

2. Give your lawn some autumn attention

Summer can be tough on our lawns, especially with the more frequent heatwaves we’re experiencing in the UK now. As a result, taking care of your lawn is one of the most worthwhile jobs you’ll want to carry out.

Your autumn lawn care should begin with raking out dead grass and moss, known as scarifying. Next, you’ll want to spike the surface with a garden fork to relieve compaction and improve drainage. With those two small jobs done, apply an autumn lawn feed, this will strengthen the roots rather than pushing soft, leafy growth that won't survive the cold.

Overseed any bare or thin patches, keep mowing as needed, but don’t go too low.

3. Plant bulbs for spring colour

Knowing when to plant spring bulbs is key to have them flowering in time. 

For daffodils, crocuses and alliums, September through to November is the ideal time, whilst tulips are best left until late October or November when the soil has cooled a little.

The amount of space you have will determine what the best bulbs to plant in autumn are, but as a rule, plant them at roughly three times their own depth in free-draining soil, pointed end up, and in generous groups rather than single dots. Containers work well too, especially if you layer different varieties at different depths for weeks of successive flowering.

This job should take no longer than an afternoon and come February you’ll be rewarded with those all important first shoots as they start to push through, making everything worth it.

Yellow and white spring flowers

4. Add late-season interest

With all this prep for next year, you might also be thinking of what to plant in autumn for colour right now. The good news is there are some lovely options.

Autumn flowering bulbs such as nerines, autumn crocus and cyclamen hederifolium will brighten up borders and pots whilst everything else is fading. Nerines in particular love a sunny, sheltered spot at the base of a warm wall.

This is also a great time for autumn planting of hardy shrubs, trees, roses and perennials. The warm soil and reliable rainfall help them establish strong root systems before winter, as a result they’ll be far more resilient next year with far less watering than a spring-planted equivalent.

5. Rake leaves and make leaf mould

You’ll want to rake fallen leaves regularly or risk moss growth on the grass. You don’t need to dispose of them either as you can turn them into leaf mould.

To do this, simply pile damp leaves into a wire cage or black bin bags with a few holes punched in the sides, and leave them somewhere out of the way. In a year or so you'll have a crumbly, dark soil conditioner that's perfect for mulching borders or mixing into potting compost. It costs nothing and it's one of the best things you can do for your soil.

Autumn leaf on grass

6. Mulch and feed the soil

Once you’ve tidied your flower beds and your new autumn bulbs are in, spread a 5–8cm layer of mulch over the surface. Well-rotted manure, garden compost, bark chippings or last year's leaf mould all work well.

This mulch will insulate roots against frost, locks in moisture, suppresses weeds and feeds the soil as the worms gradually work it in. Just keep it clear of plant stems and the crowns of perennials to avoid rot.

7. Move and protect tender plants

A lot of plants won't be able to cope with the cold, pelargoniums, fuchsias, dahlias and cannas will all need lifting or moving under cover, while pots of citrus, olives and other Mediterranean plants are best brought into a greenhouse, porch or sheltered corner.

For borderline-hardy plants that have to stay put, have some horticultural fleece ready to protect plants from frost on cold nights. A thick mulch over the crowns of tender perennials also goes a long way.

8. Sort out containers and pots

Summer bedding in containers can be composted once it's over, and the pots refreshed with spring bulbs, winter pansies, violas or evergreen foliage such as heuchera and skimmia.

Check that every pot has clear drainage holes and raise them on feet or bricks so they don't sit in water over winter. Terracotta pots in particular can crack when waterlogged compost freezes. If you want pots that look after themselves, our low maintenance container flowers guide has more ideas.

9. Clean tools, tidy the shed and check structures

Last but not least, give your tools a good clean and a wipe down with some oil before storing them away. Be sure to clean out pots and trays so they're ready for spring sowing too. Check fences, trellis and sheds for any weak spots before autumn winds arrive, and clear gutters and water butts so they can make the most of the coming rain.

Gardening tools on grass

A garden ready for whatever autumn brings

Autumn gardening is really about setting your garden up to look after itself. 

Feed the lawn, get your bulbs in, protect what needs protecting and let nature do the rest.

Tick off this checklist and you'll get both a garden that stays healthy through the cold months, and one that bursts into colour the moment spring returns.

Author

David Denyer

Euroflorist's Flower Expert

With over 35 years of floristry experience, David Denyer is a renowned master in his field. His talent and artistic vision have earned him numerous accolades and awards, establishing him as one of the industry's leading figures. David has captivated audiences worldwide, showcasing his passion for floristry in Europe, China, Australia, and America. His captivating demonstrations have left a lasting impression on floral enthusiasts globally. In 2023, David made a memorable appearance on the prestigious television show, Gardeners World, further solidifying his reputation as an exceptional florist. David's journey to success began in 1996 when he was named Interflora "Florist of the Year." Since then, he has represented the United Kingdom in the "Europa Cup" and achieved consecutive Chelsea Gold Medals and Best in Show titles at the renowned Chelsea Flower Show from 2000 to 2003. In July 2004, David was once again named Interflora "Florist of the Year" and led his team to victory at the Interflora World Cup in Melbourne, Australia. He continued to impress with another Chelsea Gold Medal in 2005 and received a Gold Medal in 2011 for his floral installation titled "A Sense of Perspective." David's Accolades: July 1996: Interflora "Florist of the Year"; September 1999: Represented the UK in the "Europa Cup" in Austria; May 2000-2005: 6x Consecutive Chelsea Gold Medal and Best in Show - Professional Floristry; July 2004: Interflora "Florist of the Year"; September 2004: Interflora World Cup Winners in Melbourne, Australia; 2011: Chelsea Gold Medal for "A Sense of Perspective" floral installation; 2023: Appeared on Gardeners World in 2023; David's vast experience and expertise now benefits Eflorist customers. Understanding the emotional power of flowers, he ensures that every customer receives the utmost delight when enjoying their thoughtfully sent bouquet.