March has an average maximum temperature of 24.7°C, and an average minimum temperature of 11.5°C. March has an average rainfall of 55.6mm.
What to do this month

With cooler mornings and warm days, autumn has arrived.

  • After a hot summer ensure that your soil is not hydrophobic.
    • Hydrophobic soil is the inability of moisture to absorb into the soil. When water falls on the soil, it runs off the surface, or simply sits there and doesn’t mix.
    • Apply Rapid soak wetting agent then add organic xtra fertilizer and mulch.
  • Autumn is the best time to plant new trees, shrubs, climbers, annuals and perennials as the soil is still warm. This helps new plants get established and develop their root system to enable them to get through the next hot summer months.
  • When planting :
    • Ensure hole is at least twice the size of the new plant root ball.
    • My planting holes are 50cm wide and deep as a minimum
    • Add planting compost, Organic xtra pellets and water crystals to soil
    • Form a bowl shaped ring of soil around the outer edge of the plant’s root zone. This helps capture water where it’s needed
    • Ensure plant is watered regularly
  • Deadhead annuals and perennials that have finished flowering.
  • Remove spent annuals.
  • Prune jasmine and summer clematis.
  • Perennials can be divided
  • Fertilise your lawns and fix bare patches.
  • Fertilise the entire garden
  • It is time to feed your roses and citrus trees.
  • The other vital component for maintaining your roses is water. The biggest and strongest blooms of the year are forming and are built on the foundation that only water provides.  Keep an eye on aphids. Speak to us about control.
  • Early frosts can burn new growth so no heavy pruning but prune back or ‘dead head’ roses to promote final flush of bloom.
    Winter flowering natives – banksia, bottlebrush (callistemon), gum tree (eucalypt) grevillea, hakea, native heath (correa) and wattle will bring colour, birds and bees to your garden.
  • Protect all Brassicas (broccoli, cabbage, cauliflower, Brussels sprouts and kale) from white cabbage moth. A light dusting of vegetable dust every 3 to 4 weeks will do the trick.
  • Asian greens
  • Asian greens
  • Broccoli and Broccolini
  • Cabbage
  • Cauliflower
  • Saffron crocus
  • Artichoke
  • Asian greens
  • Beans
  • Beetroot
  • Cabbage
  • Capsicum
  • Carrot
  • Chilli
  • Chinese cabbage
  • Cucumber
  • Eggplant
  • Leek
  • Lettuce
  • Melon
  • Parsley
  • Parsnip
  • Potato
  • Pumpkin
  • Radish
  • Rhubarb
  • Silver beet
  • Spinach
  • Sweet corn
  • Tomato
  • Zucchini
Flowers and bulbs
  •  St Patrick’s Day (March 17) is the day to plant!  You can plant these through to April. Remember to soak the seed overnight to ensure better germination.

Other plants to put in are:

  • Alyssum
  • Calendula
  • Delphinium
  • Poppies
  • Pansies
  • Violas
  • Primulas
  • Stock
  • Polyanthus
  • Foxglove

Bulbs will be store:

  • Alliums
  • Anemone
  • Belladonna lilies
  • Crocus
  • Daffodils
  • Freesia
  • Hyacinth
  • Iris
  • Jonquil
  • Muscari (grape hyacinth)
  • Nerines
  • Ranunculi
  • Sicilia
  • Snowflakes
  • Tulips

Have you thought about planting a green manure crop?

Green manure crops are fast-growing plants sown to cover bare soil in-between harvesting. Used in the vegetable garden, their foliage smothers weeds and their roots prevent soil erosion.

  • Rake bed, spread seeds, rake to slightly cover
  • Keep bed moist until germination
  • Water regularly until crop reaches knee height
  • Chop down and dig into soil while still green, this returns valuable nutrients to the soil and improves soil structure



Mulching means to cover the soil between plants with a layer of material. It keeps roots and bulbs cool in summer and warm in winter.

Mulching prevents water from evaporating. It protects the soil from wind, rain and sun, and suppresses weed growth by blocking out sunlight.

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