April

April has an average maximum temperature of 20.1°C, and an average minimum temperature of 7.0°C. April has an average rainfall of 49.3mm.

What to do this month

  • Trim evergreen shrubs such as Pittosporum, Photinia, Viburnum, Euonymus, Escallonia and conifers.
  • Do not trim Camellias as flower buds are now forming.
  • Start choosing trees for autumn colour to plant in your garden. Take a drive around your neighbourhood to see the best looking autumn trees. The timing of foliage colour varies, so buying a tree now through to May is best.
  • Camellias – Sasanqua Camellias (autumn flowering) are now in store. Come on in and select the best varieties now.
  • Great time to plant Azaleas, Rhododendrons and Pieris. These will all be settled in for a terrific floral display in spring.
  • Daphne, winter-blooming Grevilleas, Osmanthus, Erica, Erysimum, Hellebores and other winter colour and fragrant plants are also good to plant this month.
  • Fertilise Azaleas and Camellias for good flowering later in year. Use a high potassium fertiliser.
  • Fertilise lemon trees for the coming fruiting season. Also check for scale insects. Spray with horticultural oil.
  • Weather is starting to cool so reduce watering. It’s your last real chance to feed all your evergreen plants before winter.

Repair of lawns:

  • Aerate if soil has become compacted to get the most out of autumn rain, and apply a lawn fertiliser.
  • Apply top dressing to uneven areas or bare patches. Apply seed and keep moist for 14 to 21 days.

Vegetables

  • Remove three-year strawberries and replace with new virus-free stock.
  • Green manure crop can be planted in unused areas to reinvigorate soil for spring. This is a legume crop that is dug into the soil to add nitrogen.
  • Protect all Brassicas (broccoli, cabbage, cauliflower, Brussels sprouts, kale) from white cabbage moth. A light dusting of vegetable dust every 3 to 4 weeks will do the trick.

Sow

  • Asian greens
  • Broad beans
  • Onions
  • Peas
  • Shallots

Plant

  • Asian greens
  • Garlic bulbs
  • Lettuce
  • Peas
  • Shallots

Harvest

  • Artichoke
  • Asian greens
  • Beans
  • Beetroot
  • Cabbage
  • Capsicum
  • Carrot
  • Chilli
  • Chinese cabbage
  • Corn
  • Cucumber
  • Eggplant
  • Leek
  • Rock melon
  • Parsnip
  • Potato
  • Pumpkin
  • Radish
  • Rhubarb
  • Silver beet
  • Spinach
  • Tomato
  • Turnip
  • Zucchini

Flowers and bulbs

  • Now is the time to come into the nursery to select your bulbs.
  • Plant spring-flowering bulbs – Daffodils, Tulips, Bluebells, Crocuses, Freesias, Ranunculi, Hyacinths, Ixias and many more.
  • Sow some poppies to honour Anzac Day.
  • Plant up pots now for bright colour through winter. Use pansies, violas, primulas, polyanthus and cyclamen.
  • Divide herbaceous perennials e.g. Asters, Daylilies, Irises and Hellebores.
  • Some early bulbs will start to pop up this month.
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