Keep your garden growing - see what to plant right now

Growing Sweet Potato, also Kumara

Jan F M A M J J A S O N Dec
P P P P P P P P P P P P

(Best months for growing Sweet Potato in Australia - tropical regions)

P = Plant crowns

  • Plant shoots or cuttings (Slips). Best planted at soil temperatures between 17°C and 35°C. (Show °F/in)
  • Space plants: 40 - 60 cm apart
  • Harvest in 15-17 weeks.
  • Compatible with (can grow beside): Best in Separate bed
  • New shoots on Kumara
  • Well grown Kumara

Sweet Potatoes require a long warm growing season. Plant in free draining loose soil . Fertilise before planting but no more when the plants are growing as it will encourage vine growth. They will go for miles and you will get no tubers. If they do start spreading, lift the vines off the ground to prevent them rooting.

Mound up the soil about 20cm (8 in) before planting Let the plants die down, (leaves die or turn yellow) before harvesting the tubers. Dry them in the sun for a few days . then store in a cool dry place for up to five months.

Culinary hints - cooking and eating Sweet Potato

Use mashed, boiled, roasted, baked or fried. Or use in soups, pies, casseroles, curries and salads.

Your comments and tips

12 Apr 19, June Wark (Australia - temperate climate)
I’ve got orange sweet potato slips growing but your table @page top states not suitable for growing temp. zones - could you tell me why please. Very willing to learn as l’m new to growing veggies. Thank you.
26 Apr 19, Graham smith (Australia - temperate climate)
Hi June. I plant a sweet potatoe around August or September and let it grow wild. Then I take cuttings from that about 3weeks before Christmas and plant them out ,making sure I water them in really well for the first week or so. Then I harvest them just after the first frost with pretty good success.
07 Mar 19, Bruce (Australia - sub-tropical climate)
I live on the Sunshine Coast Qld and I am trying to source runners or tubers of the NZ Kumara, if anyone has some available I’m willing to purchase, the Aussie sweet potato is so so different.
08 Mar 19, Erin (Australia - sub-tropical climate)
Hi, I have Beauregard sweet potato if that is a nz variety?
12 Apr 19, Bruce (Australia - sub-tropical climate)
Unfortunately that one isn’t the NZ kumara
07 Mar 19, Mike (Australia - temperate climate)
Try the internet - seed and bulb places - like diggers club. You would probably have to buy a SP and then plant it to produce runners/shoots /slips.
08 Feb 19, Jan Clifford (Australia - arid climate)
I have grown a sweet potato in a glass and want to know if I can plant it or not. I an in the Central West NSW in the arid zone. TIA Jan Clifford
12 Feb 19, Mike (Australia - sub-tropical climate)
Plant it and see how it goes.
12 Jan 19, Grom1t (Australia - tropical climate)
I suspend (toothpicks help) a sweet potato partially in a glass of water. After 2 weeks of so I pick off the 8inch sprouts and put them in water. I plant them once they have plenty root. First time I planted before the dry and had an excellent crop of big potatoes after at least 6 .months. it's hard to know when to harvest. .my plants never go yellow. Anyone any advice? I thought I'd try growing in pots as I had a nice if small harvest of purple fleshed ones from a pot this morning - again after 9 months I think. Magnetic Island
13 Jan 19, Mike (Australia - sub-tropical climate)
It does say harvest 15-17 weeks. Pick early if you want smaller size and pick later if you like the bigger ones.
Showing 1 - 10 of 150 comments

Ask a question or post a comment or advice about Sweet Potato

Please provide your email address if you are hoping for a reply


All comments are reviewed before displaying on the site, so your posting will not appear immediately

Gardenate App

Put Gardenate in your pocket. Get our app for iPhone, iPad or Android to add your own plants and record your plantings and harvests

Planting Reminders

Join 30,000+ gardeners who rely on Gardenate. Subscribe to our free planting reminders email newsletter


Home | Vegetables and herbs to plant | Climate zones | About Gardenate | Contact us | Privacy Policy

This planting guide is a general reference intended for home gardeners. We recommend that you take into account your local conditions in making planting decisions. Gardenate is not a farming or commercial advisory service. For specific advice, please contact your local plant suppliers, gardening groups, or agricultural department. The information on this site is presented in good faith, but we take no responsibility as to the accuracy of the information provided.
We cannot help if you are overrun by giant slugs.