Growing Potato

Solanum tuberosum : Solanaceae / the nightshade family

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

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

  • P = Plant seed potatoes
  • Plant tuber. Best planted at soil temperatures between 10°C and 30°C. (Show °F/in)
  • Space plants: 30 - 40 cm apart
  • Harvest in 15-20 weeks. Dig carefully, avoid damaging the potatoes.
  • Compatible with (can grow beside): Peas, Beans, Brassicas, Sweetcorn, Broad Beans, Nasturtiums, Marigolds
  • Avoid growing close to: Cucumber, Pumpkin, Sunflowers, Tomatoes, Rosemary

Your comments and tips

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18 Feb 17, John Mauger (Australia - temperate climate)
Potatoes need about 3 months to harvest from planting for 'new' potatoes. That is about a month after flowering. If you can get 3 months before frosts give it a go or plant them in a frost-protected area. New potatoes are delicious but won't store like Old potatoes which are harvested after the tops die off. Trust this helps.
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05 Jan 17, Wendy (New Zealand - cool/mountain climate)
Is January too late to plant potatoes and if not which variety should I consider? Thanks for your advice
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20 Jan 17, Bill Gee (New Zealand - cool/mountain climate)
See Otago Daily Times Friday 20 January, "plant early maturing potatoes now for harvest at Easter."
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02 Feb 17, (New Zealand - temperate climate)
You can plant a late crop of potatoes in January as long as you have sprouted seed ready. One thing to be wary of is the Psyllid bug as it is active as the weather warms up. There are mesh products available that you drape over the crop and that keeps the bugs off.
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27 Mar 16, Julia (New Zealand - cool/mountain climate)
Can I get Dutch cream potatoes in NZ? I want to plant them.
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30 May 14, Ngaire (Australia - sub-tropical climate)
Two questions: Will Dutch Creams grow in Southern Qld and are Dutch Cream organic seed potatoes available in New Zealand?
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28 Nov 11, Selwyn Law (New Zealand - cool/mountain climate)
I have grown some potatoes in flexi-bins - the light cheaper ones, 30 and 40 litre sizes. Drainage holes I melted into the sides of the containers with a hot pipe (neat holes) about 50mm or 2" up from the bottom. The holes being higher, allows a pool of water to remain in the pot and excess to drain out. Try a little potting mix about half full and top up the shoots with straw etc. Works well and containers are reasonably easy to move if required.
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09 Jan 11, Laura Kidd (Australia - cool/mountain climate)
Hi, We have planted some potatoes and they are almost ready to harvest. I'm not really sure of the variety as my husband planted some potatoes, not from seed. It looks like there are some seed pods forming whee the flowers are. Can we use these for our next crop? If so, what do er have to do?
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10 May 10, Liz (New Zealand - temperate climate)
Click on the 'Vegetables and Herbs' tab and you will find sweet potato under S. Individual vegetables only show up on the home page calendar when they are due to be planted.
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27 Oct 09, nial (New Zealand - cool/mountain climate)
hiw long does it take a potato to grow
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Showing 51 - 60 of 68 comments
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Are you looking for SWEET potatoes or regular potatoes ..... I think your climate is better suited for Sweet potatoes -- they are different (different families) and therefore have different instructions: The ideal soil temperature range for planting potatoes is 45 to 50 degrees Fahrenheit (7 to 10 degrees Celsius). After planting, the ideal temperature for growing potatoes is 60 to 70 degrees Fahrenheit (16 to 21 degrees Celsius). Potatoes do best in fertile, well-drained soils. However, potatoes will grow in many types of soils. Soils that are poorly drained tend to produce poorly shaped potatoes and tuber rot. Potatoes do well across a wide range of pH, but prefer slightly acidic soils; a soil pH of 5.3 to 6.0 is typical for potato production. If your soil is more acidic than this, mixing in wood ash will help raise the pH and make your soil more alkaline. Sweet potatoes (Ipomoea batatas) are close cousins of morning glory and only distantly related to traditional potatoes. They are tender, so must be protected from frost, and like heat, full sun and regular watering. They crop best at temperatures of 21–26°C (70–80°F) PLEASE CLARIFY which type of potato.

- Faith Celeste Archer

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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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