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Growing Yam/Oka, also Oca

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

(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
  • New growth just emerged and some tubers ready for planting
    New growth just emerged and some tubers ready for planting
  • Young leaves of Oka
    Young leaves of Oka

Yams needs a long growing time to produce the tubers.

Protect from early Autumn (Fall) frosts to give time for tubers to fully develop.

Planting needs are 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

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
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?
15 Jun 17, John (Australia - temperate climate)
Store them in damp sand in a cool dark place. The damp sand (not too damp) will stop them from withering and the cool dark spot will stop them from sprouting for quite a while.
05 Jun 17, pati (USA - Zone 5a climate)
will these grow in Michigan
09 Jun 17, John (Australia - temperate climate)
Yams/oka need about 5 months to grow before harvesting. They can be planted when the soil reaches about 17 degrees C (a bit over 60 degrees). if you can fit these requirements you should be right. Harvest them after the leaves have started to die down to give them the most opportunity to make size.
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]
Showing 1 - 10 of 117 comments

Information on where to get oca in the US: wettingthebeds.cultivariable.com/2013/06/oca-how-when-and-where-to-buy.html

- Bill W.

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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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