Growing Sweet Potato, also Kumara

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

Not recommended for growing in USA - Zone 5a regions

  • Plant shoots or cuttings (Slips). Best planted at soil temperatures between 63°F and 95°F. (Show °C/cm)
  • Space plants: 16 - 24 inches apart
  • Harvest in 15-17 weeks.
  • Compatible with (can grow beside): Best in Separate bed

Your comments and tips

07 May 09, Barb (Australia - sub-tropical climate)
Hi Claudie in Australia cool/mountain, I assume you have already planted by now. Lettuce is good this time of year, and so too are broccoli, bok choy, sugarsnap peas and broad beans. Pumpkin and sweet potato both take a looong time, and need warmer weather. Pumpkin takes up heaps of space, so not very practical in a mini garden.
31 May 09, Meredith.Baillie (Australia - temperate climate)
I am also wanting to find New Zealand Kumera. The purple one..(they are really delicious). As you cannot, as far as I know buy the tubers here in Australia, would anyone know where I could buy the seeds?
26 Jul 10, (Australia - sub-tropical climate)
There are no seeds to grow kumara. To get nz kumara one can buy the kumara but there are no seeds
28 Jul 10, Phil (Australia - temperate climate)
If you cut the eye end off a kumera or sweet potato you can grow a new plant from this. Just as with regular potatoes.
21 Jun 09, elly (Australia - sub-tropical climate)
Hi I have had my sweet potato in the ground for about 6 mth, and it has rained non stop since Feb. Will they be ok? how do I know when to harvest?
24 Jul 09, Mel (United Kingdom - cool/temperate climate)
I'm looking for Maori potatoes in the UK can anyone suggest a source please ? Thanks
26 Jul 09, Barry Hayes (Australia - temperate climate)
For Meredith. The purple sweet potato appears in asian grocery/veg shops when in season. Keep watch. If you break off the stalk when nobody is looking you'll see the purple. I agree - they're the best variety. Put the ends (about 2") in a box on some potting mix, cover with damp potting mix to about 3" and put in a warm place for 3 weeks. They'll shoot. Break the shoots off and plant them - or cut a bit of the spud off with the shoots. Good luck. P.S. They hate frost and cold wind. Put wind guards around them until it warms up.
31 Jul 09, Santy Bruwr (Canberra) (Australia - cool/mountain climate)
Does anyone know where I can buy them in Canberra? I will check at our Asian grocery/veg shop.. but I have not seen any in Australia.. and nothing beats the taste... will buy if anyone has stock pleez - just not possible to get it here from NZ
28 Sep 10, Lana (Canberra) (Australia - cool/mountain climate)
Hi Santy, The fresh food markets (belconnen markets and fyshwick markets) have sweet potato. Most often they only stock the orange variety, but I have seen white and purple (purple skin, white flesh) there also. I am going to try to grow them this year, but keep in mind that they are not really suited to our climate!
10 Feb 10, Sandra Rowland (United Kingdom - cool/temperate climate)
Is it possible to grow sweet potatoes in the uk?
Showing 11 - 20 of 252 comments

Hi Michelle, It's probably a little late to put sweet potatoes in now as they take quite a few months to produce. You can get 'seed potatoes' from nurseries, usually from Goodman seeds. You other option is to just buy one from a good greengrocer and grow from that. The idea in Victoria is to plant the tuber in to a pot and wait for it to sprout. Once the sprouts are big enough you take cuttings and stick them in the ground and away they go.

- Grahame

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