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March Vegetable and Herb Gardening Calendar for Subtropical Climate Australia

Australia - subtropical climate zones
Australia – Subtropical climate zones

March heralds the beginning of autumn, so there’s lots of tidying up in the garden. The weather remains warm and humid in areas as far south of the country as Sydney and Perth. With the cooler conditions and moist soils, it’s also an ideal time to plant new trees, as the weather is milder and there is some time for the trees to establish themselves before winter arrives.

It’s a windy month due to cyclone season that runs from November to April in the country’s north. Thunderstorms are experienced along east coast, with around two weeks of rainfall in Brisbane.

Pick marrows, pumpkins and squash before the flesh becomes coarse. Only pick pumpkins when fully ripe (no green skin or stem), cut when stalk begins turning brown and withers.

It’s also time to lift root crops such as beetroot, carrots onions potatoes and turnips for storage and winter use. Leave parsnips in ground, they need some cold to taste the best.

If tomatoes have not ripened, the plants can be laid down flat on the ground and covered with a cloche (plastic covered frame) to speed up ripening.

Plant garlic now, as it prefers a period of cold weather to grow well.

Things to Do This Month:

Vegetables and Herbs to Grow in March (Subtropical Climate)

March Seeds to Sow and Seedlings to Plant (Subtropical Climate Australia)Sow/PlantHarvest (weeks)
Amaranthdst7-8
Asparagus Pead8-11
Basilt10-12
Beans (Climbing)dt9-11
Beans (Dwarf, Bush)dst7-10
Beetrootdst7-10
Broad Beansdst12-22
Broccolist10-16
Burdockd17-18
Cabbages8-15
Cape Gooseberrydt14-16
Carrotd12-18
Cauliflowers15-22
Celeriacs14-28
Celerys17-18
Chicorys16-24
Chillit9-11
Chivesdst7-11
Collard Greenss8-11
Coriander (Cilantro)s30-45
Cucumbert8-10
Dilldst8-12
Endivedst10-11
Fennel (Florence)dst14-20
Garlicplant cloves17-25
Gingerplant pieces of root25
Kales7-9
Kohlrabid7-10
Leeksdt15-18
Lettucedst8-12
Marrowt12-17
Mizunas5-7
Mustard Greensdst5-8
Oreganodst6-8
Pak Choydst6-11
Parsleydst9-19
Peass9-11
Pumpkint15-20
Radishd5-7
Rocketd21-35 days
Rosellat21-25
Salsifyd14-21
Silverbeet (Swiss Chard)dst7-12
Snow Peass12-14
Spring Onions (Bunching Onions)dst6-10
Squasht7-8
Sunflowerdt10-11
Swedes (Rutabaga)dst10-14
Sweet Cornt11-14
Turnipd6-9
Zucchini (Courgette, Marrow)t6-9

Key:
d = sow seeds directly into ground
s = sow seeds into seed tray
ds = sow seeds directly into ground or seed tray
t = transplant seedlings (small plants) into larger pots or plant into ground
*= frost tender
**= sow after frost

Download printable PDF version of Gardening Calendar (Australian Subtropical Climate) – March

To help improve these garden calendars, feedback and additional information from readers is greatly appreciated! Australia’s climate varies considerably, and local knowledge of when particular things need to be done in the garden are most helpful to others living in those area, so please feel free to share.

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