Growing Yam/Oca, also Oka

Oxalis tuberosa : Oxalidaceae / the wood sorrel family

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

(Best months for growing Yam/Oca in New Zealand - cool/mountain regions)

  • P = Plant tubers
  • Plant tubers about 5cm (1.5") deep covered with soil. Best planted at soil temperatures between 63°F and 95°F. (Show °C/cm)
  • Space plants: 12 - 18 inches apart
  • Harvest in 15-20 weeks. Leave in the ground until foliage has completely died down so tubers reach maximum size.
  • Compatible with (can grow beside): Best in separate bed

Your comments and tips

22 Jul 19, (New Zealand - sub-tropical climate)
You could wait, but just plant when they say so.
29 Mar 19, Hemi (New Zealand - temperate climate)
Ive planted yellow the have grown huge when flowered how soon does the plant die ?
20 Feb 19, Carl-Philip (New Zealand - cool/mountain climate)
My yams have taken off. Growing about 6 feet now from the garden. Do I cut the vines back? . Like kumara.
24 Feb 19, Mike (New Zealand - sub-tropical climate)
Sounds like too much fertiliser - nitrogen - to have a massive leaf crop. Cut them back to half.
03 Oct 18, cheryl (New Zealand - temperate climate)
Hi I grew my yams in big bucket & deep wheel barrow but after harvest 50% went rotten< I left them out to cure in the sun under a roof covered @ night, I v been doing this for years with no problems, Why?? Second problem is I can "t grow parsnips I v tried pouring hot water over rows after planting, the board trick, no luck at all. I live in Southland but don"t hold that against me.
08 Oct 18, Mike (New Zealand - sub-tropical climate)
Too much water probably or maybe some water lying in the top of the plant where it joins the yam - I had this problem with long white radish (Daikin or Japanese radish) in SE Qld this winter. Parsnips - read the notes here - attention to soil type, time to plant and most important keep the soil damp - water 2-3 times a day if hot.. I use a piece of shade cloth over my small seeds until they have germinated and grown a bit. If you have some spare timber make a little structure to nail/clip the shade cloth to. I have 2m x 2m frames that I have bird netting and vegie netting on to keep out birds and bugs. I put the shade cloth over them.
16 Oct 17, Deana weston (New Zealand - temperate climate)
Is there anyone that has any yam plants for sale or seeds. Or does anyone know where to buy them from regards Deana weston
01 Nov 17, Simone Wright (New Zealand - temperate climate)
I have some you can have if you pay for postage
04 Dec 17, leonie mason (New Zealand - temperate climate)
I would like some if they are still available Happy to pay postage I am aware it's almost too late seasonally.But I have a warm spot for them Thanks Leonie
13 Jun 17, Judy Hogg (New Zealand - temperate climate)
I've dug most of my yams so the grass grubs don't feast on them. I've cleaned and dried them. How can I now store them so they don't wither?
Showing 11 - 20 of 25 comments

Hi Stuart.Yes they are the right ones and they grow well.Please contact me on [email protected]

- john studte

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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. GardenGrow 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.
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