May Gardening Update

Autumn in the Garden

Autumn in the Garden

May marks the golden end of Autumn in Christchurch — a beautiful, busy time as the landscape transforms and cooler days signal the arrival of Winter. There’s a special energy in the garden now: a race to finish Autumn tasks and lay the groundwork for a thriving Spring.

Tidy Up and Prepare
Sweep up those brilliant Autumn leaves and start a compost pile rich in future garden goodness. Keep paths safe and slip-free by clearing away moss and debris, and give lawns a little love — patch bare spots, treat any moss, and continue mowing while the grass is still growing. A neat garden now will reward you through Winter and beyond.

Planting for the Future
Spring-flowering bulbs and lilies should be tucked into the soil without delay. Keep Winter annuals like pansies, polyanthus, and primulas well-fed and weed-free to ensure cheerful colour during the colder months.

In the Veggie Patch
Clear out spent Summer crops, but compost only the healthy remains — anything diseased should go straight to the bin. Empty beds can be sown with green manure crops to rejuvenate the soil for next season.

Fruit & Vegetable Garden

  • Sow broad beans now for a robust Winter crop.
  • Keep leeks weed-free and fed — they hate competition!
  • Sow onion seeds for transplanting later.
  • Prepare beds for planting garlic.
  • Remove and discard mummified fruit to prevent future diseases.
  • Prune away old berry canes to make way for fresh growth.
  • At the end of the month plant strawberries for sweet rewards!

Flower Garden

  • Cut chrysanthemums and dahlias back by two-thirds as they finish their Autumn show.
  • Boost Winter annuals like pansies and primulas with a side feed.
  • Spray roses before they drop their leaves to prevent black spot and rust next season.
  • Trim old hellebore leaves to showcase their Winter blooms.
  • Keep gardens weed-free and lift and divide tired Summer perennials.

Lawns

  • Mow weekly while growth continues — and don’t leave the clippings behind.
  • Patch and topdress any worn areas with instant turf.
  • Treat mossy patches and aerate compacted soil to keep lawns healthy.
  • Look out for signs of grass grub and treat before the first hard frosts.

Remember: questions can be posted on HortTalk our online facebook group