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 USA - Zone 5a 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

05 Sep 09, Robyn G (Australia - sub-tropical climate)
I got some NZ yams sent from The Lsot Seed in Tas.100gm for $4.50 plus postage.(about 4-6 tubes depend on the size,but I cut the larger ones in half to give me extra)They are growing beautifully,should be ready at Xmas.Will leave the small ones in for next years harvest.All my Kiwi mates can't wait for me to harvest them. I have got them in a container so they won't spread throughout the rest of my garden.Sunny position,watered weekly,grass clippings thrown on now & then.I hope this helps anyone.Also harvest when the clover like staks die off.(like you do for spuds.)
26 Oct 15, sue mangan (Australia - sub-tropical climate)
Hello - I just read your post about planting NZ yams - it was dated September and you thought they would be ready by Christmas - Could you tell me when you planted them. I've got some and was wondering when the best time would be to plant them Thanks
28 Aug 09, (Australia - temperate climate)
Did anyone find any yam tubers for sale within WA or can you import them within quarantine restrictions
23 Aug 09, Linda Ye (Australia - sub-tropical climate)
Where can I get Yam's seed to grow them? Is there any shops in Sydney?
22 Aug 09, karen (Australia - sub-tropical climate)
I to am looking for NZ yams I was in maleny last week and went to the farmers market but got there to late as the guy that had them had sold out said they go really fast said to try greenharvest
19 Aug 09, Chris (Australia - sub-tropical climate)
Have just this morning received 3 yam tubers from www.greenharvest.com.au Also received a list of available seasonal plants showing their yams now out of stock. Better luck next season guys.
31 Jul 09, Elizabeth Glass (Australia - cool/mountain climate)
I have just ordered some yams from this website. www.newgipps.com.au/
15 Jul 09, Sue Anderson (Australia - sub-tropical climate)
I too am looking for the Aerial Potato (Yam).I have written to some Magazines and nobody seems to able to help me.Why are they so hard to buy..somebody must have them??? Cheers Sue
17 May 09, Sylvia (Australia - sub-tropical climate)
I have only just heard about this yam and we are very keen to grow them. Do you think it would be too hot in the Grafton area of NSW to have a successful crop? We grow potatos and sweet potatoes quite successfully.
03 Feb 09, velia (Australia - temperate climate)
i am an ex-kiwi with yams growing, planted oct. but when do we harvest them?? last year they were so precious we did not eat any, just replanted them, even the tiny ones.
Showing 131 - 140 of 145 comments

Hello can you grow Oca in the tropics maybe during the cooler drieronths? No frost up here, just concerned about planting in the wet season as its ver hot 35 degrees plus most days.

- Hayley

Please provide your email address if you are hoping for a reply


All comments are reviewed before displaying on the site, so your posting will not appear immediately

Gardenate App

Put Gardenate in your pocket. Get our app for iPhone, iPad or Android to add your own plants and record your plantings and harvests

Planting Reminders

Join 60,000+ gardeners who already use Gardenate and subscribe to the free Gardenate planting reminders email newsletter.


Home | Vegetables and herbs to plant | Climate zones | About Gardenate | Contact us | Privacy Policy

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.
We cannot help if you are overrun by giant slugs.