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Growing Yam/Oka, also Oca

(Oxalis tuberosa)

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
                    P  

(Best months for planting Yam/Oka in Australia - cool/mountain regions)

P = Sow direct in garden where they are to grow.


  • Harvest in 15-20 weeks.
  • Plant tubers about 5cm (1.5") deep covered with soil.
  • Best planted at soil temperatures between 17°C and 35°C.
  • Space plants: 30-45cm

Frost tender. Yams needs a long growing time to produce the tubers.

Not suitable for areas of early Autumn (Fall) frosts.

Planting needs similar to potatoes. Yams can handle more shade than potatoes. Earthing up will help increase production.

The leaves look rather like clover. Dig up after the plant dies down and leave outside for a few days to dry.

Culinary hints - cooking and eating Yam/Oka

Scrub and boil or roast with other vegetables.

Your comments and tips

21 Jun 10 John Studte (New Zealand - cool/mountain climate)
Hi Dave.I am in Devonport and i keep mine in the back shed out of direct sunlight and on old rag just to absorb any moisture.I also have the small NZ yams available if any one would like some. john.stu63@gmail.com.
20 Jun 10 Dave (Australia - cool/mountain climate)
I have just harvested a crop of yellow/orange yams.Can any-one tell me how best to keep the small one's that we use as seed for the next crop as we live in Tasmania and we are coming into the cold months and we get temps in the minus's. Thanks Dave
14 Apr 10 john studte (Australia - temperate climate)
Hi John in Tassie.Change of email address for NZ yams.Available soon. john.stu63@gmail.com
23 May 10 stuart cooney (Australia - sub-tropical climate)
are these yams the type that look a bit like the ginger tuber and have a bushy top similar to a clover leaf.i used to grow them in nz in the south island and they croped very well there.i am interested in trying to grow them in the south east qld erea but have not been able to aquire any seed tubers can you please help me .i am able to grow the yellow flesh kumera here so they might well go ok.
25 May 10 john studte (New Zealand - cool/mountain climate)
Hi Stuart.Yes they are the right ones and they grow well.Please contact me on john.stu63@gmail.com
25 Feb 10 John Studte (Australia - cool/mountain climate)
Hi Cathy.Please contact me at jon_ela8@bigpond.com and i will organise that for you.John
25 Feb 10 Cathy Peck (Australia - sub-tropical climate)
I contacted this place cornucopiaseeds and they said they will have yam tubers June/July
23 Feb 10 Cathy Peck (Australia - sub-tropical climate)
Hi John in Tasi I have longed for a feed of fresh yams for 32 yrs and only ever have them when I go home and thats rare, sometimes they are not in season when I am there. I have just begun a nice garden and would love to grow them I am willing to pay for them. Cathy Peck
19 Jan 10 Tam (Australia - sub-tropical climate)
LEIGH- try the Diggers club the are seed savers and I think Australian and NZ , look them up online
19 Jan 10 Chris Branson (Australia - temperate climate)
I came across this site/discussion while looking for references to the purple skinned-yellow (not white) fleshed Kumara in Australia. My mission is to get some to grow for my Kiwi wife who misses them. Can anyone help me?
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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. 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.

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