Your Monthly Planting Guide

April

Mid autumn…

While some parts of the country may be experiencing an “Indian summer” this month, there’s a definite chill in the air in the cooler, southern region of the continent. Crisp nights, foggy mornings and even a frost or two are good indications that, for most of us, winter is not far away. Even in the tropical north, the humidity has receded.

Gardening In April

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Vegetables

What to harvest now:

There’s not a lot to harvest from the veggie patch now, although some new plantings of salad greens may be almost ready. 

  • The last of the pumpkins may still be clinging to their vines and there may still be some green tomatoes on late fruiting varieties. These should all be picked now and the plants removed. The tomatoes won’t ripen this late in the season, so turn them into pickles.
  • Lettuce, rocket, silver beet, spinach and rhubarb planted last month may have some tender young leaves ready to pick later in April.

What to plant now:

Seedlings of winter veggies can continue this month. Your crops will get a good start before colder weather slows down growth.

In temperate to cool temperate areas, plant seedlings of:

 
In warm regions, sow seeds or plant seedlings of:

Veggie patch tips for April:

  • Keep new plantings growing strongly with applications of liquid fertiliser for vegetables and herbs such as Osmocote Boost+Feed Vegetables, Tomatoes & Herbs or a certified organic fertiliser every two to three weeks.
  • Water deeply at least once a week if the weather is dry – add a wetting agent to ensure moisture penetrates deep into the soil.
  • Hand pull or hoe out weeds as they appear – they compete for nutrients and moisture and may also harbour pests that could attack your crops.
  • Use snail and slug traps or baits to protect young seedlings.

Fruit

What fruits to harvest now:

There may still be some crops of late season fruits maturing. These include:

 

What fruit to plant:

Evergreen fruiting plants such as passionfruit vines and citrus may still be put in while the soil is still warm. It’s still too early for and new bare-root fruit trees. They are best planted in mid to late winter.

 

Flowers & Bulbs

What flowers to plant:

Spring flowering bulbs:

  • Anemone
  • Daffodil
  • Freesia
  • Hyacinth
  • Iris
  • Ixia
  • Lachenalia
  • Muscari (grape hyacinth)
  • Narcissus
  • Ranunculus
  • Sparaxis
  • Scilla
  • Sprekelia
  • Tritonia
  • Tritelia
  • Tulip
  • Watsonia

 

Winter and spring flowering annual seedlings:

  •  Arctotis
  • Alyssum
  • Antirrhinum (snapdragon)
  • Aquilegia (granny’s bonnet)
  • Calendula
  • Canterbury bells (campanula)
  • Carnation
  • Cineraria
  • Delphinium
  • Gaillardia
  • Geum
  • Gypsophila
  • Iceland poppy
  • Larkspur
  • Nemesia
  • Nigella
  • Pansy
  • Polyanthus
  • Primula
  • Scabiosa
  • Sweet William
  • Verbena
  • Viola

Lawn

Maintenance tips for your Lawn:

In southern regions, this month is your last chance to patch or rejuvenate a tired lawn or install new turf before the weather becomes too cool. It’s already too late to sow a new lawn from scratch. Although the seed may germinate well, there’s not enough time for the grass to become well established and thicken up before winter.

In the warmer north of the country, new lawns may be started from seed or turf rolls. A reminder of the autumn lawn maintenance program we recommend:

 

Garden Tasks

Things to look out for and do during the month:

  • Continue checking for fallen and/or diseased fruits. Good garden hygiene helps present disease and pest carry-over to the next growing season. Dispose of them in the household rubbish – do not put them in the compost bin! 
  • Cut out and dispose of galls (swellings) on citrus trees to help eradicate gall wasps.
  • Check the ties on dahlias and chrysanthemums to ensure they are not cutting into stems.
  • Carefully lift gladioli corms, let them air dry for a few days, then spread in a single layer in a tray. Store in a cool, dry place until next planting time.

 

Pest Control:

  • Keep an eye out for aphids and other insect pests, especially on herbs and vegetable and flower seedlings. Use a general garden insecticide like Defender Pyrethrum Insect Spray to control them. Don’t forget to spray the undersides of leaves too. 
  • Watch for the caterpillars of the White Cabbage Butterfly on cabbage, cauliflower, broccoli and other brassicas. Pyrethrum will assist or try a cabbage dust. 
  • Newly planted seedlings may be targeted by snails and slugs. Protect them with Defender Snail & Slug Pellets.

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