Growing Yacon, also Sunroot

Smallanthus sonchifolius : Asteraceae / the daisy family

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

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

  • P = Plant tubers
  • Easy to grow. Plant sprouting root/tuber to a depth of about 4cm and mulch to cover. Best planted at soil temperatures between 50°F and 77°F. (Show °C/cm)
  • Space plants: 39 inches apart
  • Harvest in approximately 25 weeks. You can collect a few at a time without digging out the whole plant..
  • Compatible with (can grow beside): Best in separate bed

Your comments and tips

08 Oct 19, Rhys (New Zealand - temperate climate)
Hi Jill Any chance you have a few bulblets still available. Thanks.
20 Sep 19, susie barr (New Zealand - cool/mountain climate)
Please can I have some bulbs
28 Jul 19, Jill (New Zealand - temperate climate)
Love to collect some bulblets if you have any left.
20 Mar 19, Elaine Brown (New Zealand - sub-tropical climate)
My Yarcons have yet to flower ? when should they flower
02 Aug 18, Heather-anne Lang (New Zealand - temperate climate)
Hi I live on Pirongia in the Waikato and am wanting to grow some yacon. Does anyone have any crowns to share or sell. Because we are on the side of a mountain we don't get frosts so hopefully it will grow well. Thanks.
08 Feb 19, Jay (New Zealand - cool/mountain climate)
Hi Heather, Did you get any yakon when you inquired? I live in the village and have just been given a plant, we could share.
11 May 18, Minsoo (New Zealand - temperate climate)
Hi I live in tauranga. Where can I get the seed. I would like to plant in my garden. Thanks
21 May 18, Dawn (New Zealand - temperate climate)
Hi there. I will be harvesting my yacon in the next month or two and can send you some then for you to plant in spring...paying it forward as I was given 3 two seasons ago, planted 12 and gave away 16 last season, so I expect to have wayyyyy too much this harvest!!!
02 Jul 18, carol o'shea (New Zealand - temperate climate)
Hello Dawn. I am in Tauranga, was given a Yacon plant last spring. It is beginning to die down. can you give me any advice as to what I do with it now. Do I dig the whole plant up? how do I start another plant for the coming spring? Any advice you can give would be greatly appreciated. Regards Carol
26 Jul 18, Faye (New Zealand - cool/mountain climate)
Dig the whole plant up. Eat the large light brown tubers (look like dahlia tubers) . Where the stem meets the ground should be a different thickened part more reddish keep this it will get shoots in spring and is the bit to plant when danger of frosts is past.
Showing 41 - 50 of 55 comments

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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. 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.
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