What to plant- September

3rd Sep 2021

As the days begin to lengthen and the temperatures begin to lift, we discover the changes of spring happening all around us. Trees that were bare branches are coming to life. The dullness of winter is being replaced with renewed life, fresh growth and brilliant colours. Life in the garden is very exciting as spring arrives.

Potatoes are a fabulously exciting food to grow. In the garden, in pots, in drums, in tyres, in soil, in straw, even in a laundry basket.....whatever your garden looks like, you can grow some spuds. Top quality certified seed potatoes are now available at Harmony Garden Centre and with some varieties that are well known and some more unusual gourmet types, now is the time to plant this wonderfully versatile root vegetable. We have everything that is needed plus all the handy hints to help you to begin your Spud Luv this weekend.

As the soil temperature warms up, sow fresh seeds (not last year’s leftovers) of Carrot, Parsnip and Beetroots. Cover with seed raising mix to 2 or 3 times the thickness of the seed to improve germination. Also plant Spinach, Silverbeet, Spring Onions, Leeks and Onions and early crops of Brussels sprouts, Cabbage, Cauliflower, Kale and Broccoli to avoid those pesky cabbage white butterflies.

Prepare your beds ready for peas. Peas love a soil which has been limed and enriched with organic matter. Dig your trench about 30-40 cm deep and roughly the same width and top up with our pre-made veggie mix. Add a few handfuls of blood and bone along with a generous application of lime. Peas require loose and airy soil that drains well and really need a full sun position 6-8 hours of direct sunlight everyday) so be sure to choose an appropriate location or create a raised garden bed for extra drainage

  • Spring is the perfect time to plant Citrus as the frosts pass and the ground warms up
  • Plant Summer flowering bulbs such as Gladioli, Dahlia and Begonia can be planted now.
  • Continue to deadhead late winter/early spring flowering annuals such a Primula, Pansy, Cineraria, and feed weekly with a good liquid food – this will help to extend flowering and continue the display of colour as the warm season annuals come to life.
  • Seedlings of spring and summer flowering summer annuals including Alyssum, Cosmos, Lobelia, Marigold, Nemesia, Petunia, Phlox, Poppy, Snapdragon, Sunflower and Zinnia can be planted now as the weather allows.
  • Choose and plant Camellias now while they are in flower and you can choose your preferred colour.
  • Begin feeding roses with Rose fertiliser – water well after feeding or feed after rain.• 
  • Fertilise gardens to supply plants all the nutrients needed for the abundant season of growth ahead.
  • Mulch garden beds to control weeds and help to retain moisture during the warmer months ahead.
  • Now is a good time to start cleaning up pots and hanging baskets in preparation for new planting. 
  • Throw out any old tired potting mix and start afresh with new premium quality potting mix for best results. 
  • A premium quality potting mix will have water storage crystals added to minimise summer watering.
  • Ornamental grasses and strappy plants make an interesting addition to the garden – they are easy care and as they sway in the breeze they add life and movement to the garden.

• Sow new lawns this month. Good preparation is essential. Remove weeds and debris and then rake and level ground thoroughly. Remember to keep ground moist once you have sown the grass seed.
• For existing lawns, spray broadleaf and lawn weeds such as bindii now to control weeds and prickles before summer arrives.
• Fertilise existing lawns to encourage strong lawns while there is good spring growth.
• Lawns that have been sprayed for weed control should be fertilised two weeks after spraying to encourage lawn growth and minimise opportunity for weeds to re-grow

• Lawn grub numbers are now beginning to increase and will be actively feeding on lawns. The signs are brown lawn patches and unhealthy green grass. Ask about the best treatment to control these pests.

*These details are based as a guide for Lauderdale, Tasmanians climate and more specific information is available via one of our friendly horticulturists at the Garden Centre