September

September has an average maximum temperature of 16.2°C, and an average minimum temperature of 4.0°C. September has an average rainfall of 65.2mm.

What to do this month

  • With any new planting of trees and shrubs, good preparation is vital. Ensure you are using a good planting compost, water crystals and Organic Advance Plus fertiliser. After planting keep soil moist (but not soaking) for at least 12 weeks.
  • Hellebores, also known as Winter Roses, are great planted under deciduous trees as they love to be shady in the summer and sunny in winter. They are a clumping perennial available in single and double flowering varieties, in a wide range of colours.
  • Winter-flowering Sasanqua Camellias can be pruned after flowering.
  • Lemon trees will need an end of winter pick-me-up feed. You will need to check for pests.
  • Feed Camellias, Azaleas, Rhododendrons, Daphne, Pieris, Erica and other shallow-rooted plants with a generous helping of fertiliser.
  • Fertilise the lawn every 6 to 8 weeks. Increase water to lawns as temperature heats up.
  • Time to plant or repair your lawn areas. Now is the time to spray for Bindii or broad leaf weeds like Cape Weed. Use a selective herbicide like Kleen Lawn.

Vegetables

  • Tomato seedlings are available but must be protected from frost, along with capsicum and eggplant seedlings.
  • Onion seedlings may still be transplanted.
  • Vegetable beds can be planted with Marigold and Nasturtiums as they are great plants for attracting pollinating insects.
  • Control slugs and snails using pellets or beer traps.

Sow

  • Asian greens
  • Cabbage
  • Carrot
  • Leek
  • Lettuce
  • Onion
  • Radish
  • Silver beet
  • Spinach
  • Turnip

Plant

  • Asian greens
  • Asparagus
  • Jerusalem artichoke
  • Lettuce
  • Onion
  • Rhubarb
  • Potatoes
  • Spinach

Harvest

  • Globe artichoke
  • Broad beans
  • Leek

Flowers and bulbs

  • If you didn’t get to plant bulbs in April we have bloomer pots of bulbs in stock – Daffodils Hyacinths and Tulips. You can now buy your summer bulbs.
  • Tie Sweet Peas to supports.
  • Dahlia clumps left in the ground can be divided before new growth emerges.
  • Finish planting summer bulbs such as Bearded Irises, Dahlias, Daylilies, Gladioli, Canna Lilies and Hippeastrums.
  • Begonia tubers can be taken out of winter storage and placed in small pots to start growth in a frost-free area, such as a glass or shade house.
  • Control slugs and snails using pellets or beer traps.
  • Spring can be one of the best times of year, and our gardens bring something new each day.
  • Spring-flowering bulbs require consistent watering, especially if grown in pots.
  • Apply much to retain moisture in soil.
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