What to do in the garden in September?

What to do in the garden in September?

With the rich colours of autumn starting to glow, September is an especially lovely month for gardens. While the warm weather lasts, it’s time to gather in the harvest and start preparing the garden for the colder months ahead, as well as planning for the joys of another spring.


Tips for a great September harvest

  • Want masses of runner and French beans? Keep picking! Cook them, freeze them or just give them to your neighbours, but keep on picking to get the most from your plants.
  • Pinch out the growing tips of cordon tomatoes (these are the tall ones that need staking) so that the plants put all their energies into ripening their last fruits.
  • To help pumpkins ripen, remove any leaves that are shading them from the sun, and put a slate tile under pumpkins to keep them off damp ground.
  • Three weeks before harvesting maincrop potatoes, cut off all foliage and dispose of it. This reduces the risk of blight spores getting into the soil and damaging the crop.

What to plant in September

Planting spring bulbs is the perfect antidote to the pre-winter blues, with the promise of dazzling displays in a few months’ time. Daffodils, hyacinths, crocuses and snowdrops can all be planted in September, although it’s best to wait until November to plant tulips, to reduce the risk of viruses.

September’s also a good time to sow hardy annuals like cornflowers, poppies and love-in-the-mist, giving you more colour to look forward to next year. And for colour now that will last well into winter, fill pots and borders with autumn-flowering heathers, violas and cyclamens.

Finally, autumn’s the ideal time for planting trees and shrubs, giving their roots time to establish over winter ready for new growth in spring.


Top 10 gardening jobs for September

  • Divide summer-flowering herbaceous perennials like hardy geraniums, salvias and hostas
  • Keep on deadheading summer bedding and it’ll carry on flowering until the first frosts.
  • Deadhead roses, penstemons and dahlias for late summer colour.
  • Water camellias and rhododendrons regularly – next year’s flower buds are developing now.
  • If you’re growing brassicas like winter cabbage or kale, net them to keep the birds away.
  • Net ponds before the leaves start to fall.
  • Get started on autumn lawn care - scarify, aerate, top-dress and feed your lawn, and cut it on a higher blade setting as growth slows down for the winter.
  • Raise pots on pot feet to stop them getting waterlogged and frozen over winter.
  • Clean out greenhouses and remove shading to make the most of lower light levels.
  • Take cuttings from pelargoniums and fuchsias.

Our garden centre is packed with plants to keep your garden looking great right through the winter and well into spring, so why not pay us a visit? Our friendly staff are always ready to help and advise.

You might also be interested in:

Outdoor Style: City Gardens

You can get creative and design your own city garden with a few tips and ideas. You do not need to be restricted if you have a smaller urban space because the options are vast with many products on the market made specifically for city spaces and many new varieties of plants available for containers and small gardens. There are so many ways to design a stunning outdoor space from urban jungle style to formal, compact planting, patios to decking and a hammock under a tree, these ideas should get you started to design your own city garden.

How not to make a mountain out of molehills

When you’ve spent long hours creating your perfect lawn, the last thing you want to see is a whacking great molehill spoiling your handiwork. So to help, here’s the lowdown on garden moles and what to do about them.

DIY Ideas: Make your own succulent wreath

Making a Succulent Wreath is not only trendy but they look great and are easy to make, with a little patience. You can get really creative and enjoy some fun time enjoying making your own wreath with your own choice of plants. When you have made it, you can display it at home or even give it away to friends or family as a lovely gift.

Garden plant of the moment: Pieris japonica

Pieris japonica is a plant of many names. Also known as Japanese andromeda, flame of the forest or lily-of-the-valley bush, this striking evergreen shrub looks good all year round. With its attractive foliage and sprays of spring flowers, it’s a great low-maintenance shrub for shady gardens.