How to fix your garden after you have come back from holiday

If you’ve come back from holiday to straggly plants, wilted flowers and struggling vegetables, it’s time to tidy up, think about autumn planting and choose some spring-flowering bulbs.

You may want to try to keep your annual container plants going a bit longer, but unless we have an Indian summer they are unlikely to reach their pre-holiday glory.

You know it’s time to throw in the towel when your trailing lobelia have gone brown, your petunias are leggy and lifeless, and other bedding plants such as busy Lizzies, verbena and begonia have withered.

1. Ditch dead annuals in pots

You may be able to salvage pelargoniums if they haven’t been waterlogged by rain. They will withstand drought conditions though, so deadhead them thoroughly, and water and feed them to keep them going a bit longer.

2. Tidy up perennials in containers

If your perennials in pots have survived and you eventually want to move them to a border, give them a thorough soaking and a good trim, and think about where you might want to relocate them later on in the autumn.

3. Add colour

There’s autumn colour to be had if you plant late-summer flowering chrysanthemums and dahlias in pots using fresh compost. Evergreens in pots can be dunked in a bucket of water to make sure their roots are wet, without being waterlogged. They will provide height and structure to any container as you replace the spent summer plants around them with autumn-flowering ones.

In borders, cut back untidy growth, although you can leave the seedheads of perennials like rudbeckia to add architectural interest throughout winter. To bring in colour, think about planting some sedums, now known as Hylotelephium, which look wonderful at the front of a border. Choose eye-catching varieties such as ‘Red Cauli’, which produces crimson-red flowerheads.

Saxifrages are also worth considering for a burst of colour. Among the highlights of a recent RHS Garden Wisley trial of hardy autumn-flowering perennial saxifrages is Saxifraga ‘Shiranami’, a neat variety with white, starry flowers over glossy, fresh green foliage. This variety flowers for many weeks in autumn and is best planted in partial shade.

Asters and Japanese anemones are also ideal for borders as summer turns into autumn, although be warned that Japanese anemones can be a devil to eradicate if you decide you’re not keen on them. Red hot pokers can also add form and colour to a border in late summer and autumn.

4. Harvest crops

You may have to ditch some of your crops if you’ve had no-one to tend to them while you’ve been away.

Radishes may have gone woody, lettuces will run to seed in hot weather and runner beans may be too long and stringy, while courgettes may have turned into marrows and tomatoes could have developed blossom end rot through irregular, inconsistent watering.

You’ll need to ditch the produce that has gone over, depositing it in the compost bin, and pick all the veg, such as green beans, which are still edible. Freeze any gluts by blanching the crop – whether beans, carrots or peas – for a minute or two in boiling water, and then plunge them into ice cold water, before draining them and freezing them in bags.

5. Keep on top of weeds

They may have grown in your absence, given the sunny and rainy weather, so make sure you keep them under control in your borders before autumn sets in, or you’ll find them springing up all over the place come spring.

6. Leave your lawn

Don’t worry if your lawn has turned brown – although it’s unlikely to have scorched in this summer’s changeable weather. If it has, though, it will recover with the autumn rains. If you want to tidy it up, set your mower blades high to give it a haircut, removing weed seedheads.

7. Plant spring bulbs

Plant bulbs such as snowdrops, narcissi, muscari and crocuses in your new container displays and in borders, to give you something to look forward to in spring. They are widely available now from garden centres and online bulb stockists.

In containers, plant them deep around any conifers or other evergreens in pots to provide bursts of colour in late winter and spring or underneath autumn container plants. Bulbs can be ordered now from online suppliers and are available in garden centres.

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