Growing Sweet Potato, also Kumara

Ipomoea batatas : Convolvulaceae / the morning glory family

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

Not recommended for growing in New Zealand - cool/mountain 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

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.
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
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?
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.
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.
11 Apr 09, IAN (Australia - sub-tropical climate)
I can only get yellow, white or red (with white flesh) sweet potatoes in Australia. But does anyone know where to get the red one with the yellow flesh? - these are common in NZ but I have never seen them in Australia.
09 Apr 09, Anneliese (United Kingdom - cool/temperate climate)
how do you know if the sweet potatos are ready - mine have been in the ground for 6 months now
07 Apr 09, Claudie (Australia - cool/mountain climate)
Hi there I have just decided to start my own mini Veggie garden and I am wondering what is the best thing sow in about two weeks from now. My family eat alot of lettuce and pumpkin and sweet potato. What should I do? :)
Showing 291 - 300 of 307 comments

Thanks for the info - I am new to the game and was wondering the same thing! All set to (excuse the pun) have a dig at growing some sweet potatoes now! Cheers!

- Jo

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