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 USA - Zone 5a regions

  • 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

Your comments and tips

30 May 22, Bryon Ellison (Australia - tropical climate)
Where can I get kumara Wairaraka. Red with white flesh and very light central red streeks
31 May 22, (Australia - sub-tropical climate)
You would have a very slim chance of finding some in Australia.
01 Jun 22, Bryon Ellison (Australia - tropical climate)
Does any one know what is a similar species in Australia?
30 Apr 22, Robyn ballantine (Australia - cool/mountain climate)
When we have a big supply, how do you cure? And keep them. ? I have found they just rot when we dig them up
02 May 22, Anonymous (Australia - sub-tropical climate)
Don't water them for the last 2 weeks or so before digging them up - toughen them up a bit.. Put them out in the sun or shaded area for a week or two to get a tough skin. Then in a cool dry place. They should keep for few months.
21 Apr 22, Julie Edwards (USA - Zone 5a climate)
When do I plant the slips sweet potatoes? In my zone. We have been having late frost as late as March the past couple of years
22 Apr 22, Anonymous (Australia - sub-tropical climate)
There is no planting guide for your climate zone in the USA. Your climate doesn't suit by the sound of it.
05 Apr 22, (Australia - temperate climate)
i was looking for websites to help with my school project and this helped so much. thanks alot.
14 Mar 22, Malcolm (New Zealand - sub-tropical climate)
I have grown a large bed of kumara in a school garden. The entire bed is covered in healthy top growth. But I can't feel any tubers when I lift up a section of top growth. I'm interested in the comments on pulling up runners, although I may be too late now, in mid-March. Do I just hack away at the long vines, cutting them back to where they enter the soil. Or am I wasting my time, since we are about a month from harvest?
09 Apr 22, Will (New Zealand - cool/mountain climate)
No, you are not wasting your time growing them. Even if there are no tubers, the top leaves can be harvested. They are commonly harvested & eaten in the Philippines. Steam them. They commonly used them with raw tomatoes, in their summer.
Showing 11 - 20 of 287 comments

I lived in Maitland in the Hunter Valley until 1985. We used to get a white fleshed sweet potato that when cooked was soft, almost opaque, and very sweet. My mother would post to me when I moved to Brisbane as I couldn’t get them here! My questions is. What were they and where can I get them? Phillip Caruthers.

- Phillip

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