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Editor, The Gardening Magazine | www.keranbarrett.com.au |

Garden tasks for March

Garden Tasks for March

What to do this month:

This information is intended as a general guide only. Local conditions can vary and seasonal variations need to be taken into account. If in doubt, ask a horticulturist at your local nursery or garden centre. Go here for more information on climate zones.


  • Watch out for snails and slugs that become active after wet weather. Use snail pellets or alternatively, trap them under timber planks, broken pieces of terracotta pots or damp newspaper.
  • Avoid watering late in the afternoon as this will increase overnight slug activity.
  • Rejuvenate lawns that have suffered during the hot summer months by top-dressing and reseeding if necessary. As the weather cools, lawn seed will germinate more easily. Using a fork, don’t forget to aerate the lawn too if the ground is compacted.
  • Water lightly before broadcasting lawn seed then water daily until seeds have successfully germinated.


  • Prepare beds for planting spring-flowering annuals using homemade compost to build up the soil.
  • Collect the seeds from annuals that have finished flowering, leave the seeds to dry then store them in paper bags to sow later in the year or swap with friends.
  • Compost the stems and foliage of spent annuals so that no part of the plant is wasted.
  • Enjoy all those late-flowering shrubs such as tibouchina, hibiscus, plectranthus and repeat-flowering roses, which should continue to flower for a few more weeks.
  • Visit your local nursery and select plants that give colour at this time of year so your garden has variety all year round.



  • Prune back fuchsias and geraniums to promote further growth and to tidy up their general appearance.
  • Don’t throw away the pruned cuttings, use them instead to propagate more plants. Use a rooting-hormone or simply plant in a pot using a good quality potting mix.
  • Water thoroughly garden beds that may have become dry from the heat of summer.
  • Dig in blood and bone to rejuvenate areas within the garden that have become depleted of nutrients after the ravages of summer. Then add a layer of organic matter to improve the soil fertility and texture.


  • Plant certified strawberry runners into well-prepared soil and mulch with straw once they have become established.
  • Soak sweet pea seeds in warm water for an hour before planting, as this will aid their germination. Add a little dolomite lime to the soil and ensuring there is support for the sweet peas such as a trellis or fence. Grow dwarf varieties in pots as well.
  • Weed garden beds in preparation for planting vegetables and annuals. This will help to prevent weeds from becoming a problem later and also taking nutrients out of the soil.
  • Chill cold-climate spring-flowering bulbs by putting them in the refrigerator crisper for several weeks to imitate a cold spell. Leave planting bulbs until the weather is much cooler.