Keep your garden growing - see what to plant right now

Growing Yam/Oka, also Oca

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

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

P = Plant in the garden.

  • 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

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 1 - 10 of 110 comments

Post a question, comment or tip about Yam/Oka

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

Buy the app for iPhone/iPod, iPad or Android and support GardenGrow

Planting reminders

Join 30,000+ gardeners who rely on GardenGrow. Subscribe to our free planting reminders email newsletter

Home | Vegetables and herbs to plant | Climate zones | About GardenGrow | 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. 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.
We cannot help if you are overrun by giant slugs.