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Growing Yam/Oka, also Oca

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

(Best months for growing Yam/Oka 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

15 Oct 16, Mahesh (Australia - temperate climate)
I planted the yam before winter this year but I left it in the soil and now is october and waiting for shoots to come out . When will ir start to shiit out.. I also have turmeric which after harvest before winter planted the tuber again and waiting for the shoots to come out. In roughky what month will the shoots be visible.
25 Nov 15, emma (USA - Zone 6a climate)
How much would it cost to send to sykesville Maryland USA?
18 Oct 15, Fay Whitehead (Australia - temperate climate)
Do you have any NZ yams for sale? If so, can you give me details. Do you know if they can be sent to Perth? Thank you.
19 May 15, john studte (Australia - temperate climate)
nz yams-occa tubers are available for this growing season.2015. please contact me at - [email protected]
08 Aug 15, Wendy Henderson (Australia - temperate climate)
Hello, I would like to grow Oca this coming year and wonder if you have any for sale please? Thank you Wendy
15 Aug 15, John (Australia - temperate climate)
Hi Wendy. My apologies for not getting back to you before now.Yes i still have tubers available if you would like some. Can you please contact me on my email ad if you do. Regards John.
25 Jul 16, Rick Bullock (Australia - temperate climate)
Hi, Do you have any NZ Yams for sale this year? I would like some to plant and some to eat ! Do you take paypal or Credit Card? Cheers Rick Bullock Brisbane
06 Feb 15, andy (Australia - tropical climate)
I have the greater yam growing in my garden. Had a lot of trouble to start with dogs digging out tubers. What do I need to do to promote aerial tubers? Also how big can this yam grow as vines are growing very long and high!!
30 Dec 14, Sandra (USA - Zone 8b climate)
Where can I buy seeds, preferably organic, from? Thankyou
26 Feb 17, (USA - Zone 8a climate)
I live in zone 8a also (Waco TX) & have recently bought from all these places online. I am very happy with these companies. Hope this helps for USDA organic or Heirloom seeds
Showing 11 - 20 of 121 comments

I bought 1 or 2 little plants last summer & planted them on a little hilled bed. The plants died down but I left them as they were until last week when I noticed parts of tubers sticking out of the soft ground. I dug around & there are lots of them, some of them sprouting already (April 7). I left a few to grow again but I harvested several quarts of tubers. The slugs had nibbled some of them but most look healthy. Portland OR. no work, no trouble.

- Billye Timbes

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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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