15 gardening tips for May

15 gardening tips for May

May is just around the corner and it's a beautiful month to get out into the garden, with spring in full bloom and everything bursting back into life.  It's also one of the busiest months for a gardener, especially if you grow your own food as well.

Here are our 15 gardening tips for May, to get your garden looking its best for summer, you may even be inspired to tackle some of the jobs over the bank holiday weekend:

May's 15 gardening tips

  1. Plant summer bedding in pots, windowboxes and hanging baskets to add instant colour to patios and front steps. In colder areas of the country, wait until the end of the month to avoid any last cold snaps.

  2. Once the leaves of spring bulbs like daffodils, bluebells and tulips have died back, cut the flowering stems off at ground level. Lift and divide overgrown clumps of spring bulbs.

  3. Sow annuals like sunflowers, poppies and cornflowers outdoors for a fantastic summer display.

  4. Sow courgettes, pumpkins, squash,  runner beans,  French beans and sweetcorn in pots/modules in a greenhouse or on a sunny windowsill for planting out next month.

  5. Earth up potatoes to keep the tubers covered – if they are exposed to sunlight, they will turn green and become toxic. Plant them this month if you still have any maincrop seed potatoes. 

  6. Pot your tomato seedlings into larger pots, but wait until the end of the month to plant tomatoes outdoors, and remember to harden them off first. 

  7. Sow basil seeds in pots on a sunny windowsill for a constant supply of tasty leaves all through summer. You can also sow coriander outdoors now.

  8. Sow a new batch of salad leaves and scallions every couple of weeks for fresh salads throughout summer.

  9. It’s not too soon to start sowing your winter vegetables! Sow kale in pots in the greenhouse and parsnips and Brussels sprouts directly outdoors where they are to grow. Beetroot, spinach, chard, radish, turnip and peas can all be sown directly outside and winter cabbages, calabrese, kohlrabi, and swede can be started off in modules for planting out next month.

  10. Make the best use of your water by watering plants in the early mornings or the evenings, constantly watering the earth, not the foliage. Install a waterbutt to collect rainwater and use this for watering – it’s perfect for plants.

  11. Keep on top of weeds, especially in the vegetable garden. Run a Dutch hoe over the ground to clear annual weeds on dry days. Perennial weeds with long taproots, like docks and dandelions, can be tackled with a hand fork or dandelion grubber.

  12. Take care when trimming hedges – always check that there are no birds nesting in the hedge before you start cutting. Remember, it’s illegal to disturb nesting birds.

  13. Once they've finished flowering, prune spring-flowering shrubs like forsythia, Japanese quince, flowering currants and choisya to keep them looking neat. 

  14. Now that the frosts are over, it’s time to prune Group 1 clematis like Clematis montana and Clematis armandii that flower early in the year. Cut back as needed to keep them to size. 

  15. Water container plants regularly even if it rains, as their foliage often stops the rainwater from reaching the compost. Feed them fortnightly with a balanced liquid feed.

Whether you’re sowing, planting or planning for great summer garden parties, visit our centre, and you’ll find everything you need!

Our Roscommon and Boyle Garden Centre opening hours over the weekend are Saturday 9am to 6pm, Sunday 12pm to 6pm and Bank Holiday Monday 12pm to 6pm. 

Ardcarne Garden Centre Café Boyle opening hours are Saturday 10am to 5pm, Sunday 12pm to 5pm and Bank Holiday Monday 12pm to 5pm.