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 50°F and 86°F. (Show °C/cm)
  • Space plants: 12 - 16 inches 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

21 Dec 18, Mike (New Zealand - cool/mountain climate)
Should be ok - as long as you harvest before next winter's frosts. Plenty of sun.
19 Dec 18, Shona (Australia - sub-tropical climate)
Some of my potato plants are going yellow. Planted 7th October. What can I do do save them.
20 Dec 18, Mike (Australia - sub-tropical climate)
Probably running out of N and it is very hot and dry now if you are missing the rain like us. Potatoes should be planted a lot earlier for a spring crop - late August very early Sept. Harvested by now.
24 Nov 18, Graham Bower (Australia - temperate climate)
I started planting a variety of spuds mid Aug in Melb, normally after frost danger was over. End sept when plants were around 15-20cm high we had severe frosts and plants got badly burned off. Surprisingly, they recovered well only to get hit hard again 3 weeks later, Once again they recovered. I have just started ferretting out a few early spuds and the crop looks like being one of my best ever. Has anyone ever tried reducing leaf growth by removing some of the tops to see the effects on the crop?
25 Nov 18, Mike (Australia - sub-tropical climate)
Was it an unusual cold Spring with the frosts? Probably reduce leaf growth by cutting back the N. Last year I put up 3 pieces of 3/4 (what's missing Mike?)
26 Nov 18, Graham Bower (Australia - temperate climate)
Most unusual to get frosts this late or this severe here. What I am getting at is the fact that nature has given me a reduction in top growth and a consequent terrific crop. Later crops have good but not excessive top growth, quite normal, in similar conditions and soil prep. Unsure about crop as yet.
28 Nov 18, Mike L (Australia - sub-tropical climate)
Yes I know what you are saying - nature works in a funny way a lot of the time. I use to think produce a good big plant and it will produce a great crop - doesn't work that way though. A balance between the right season, sunlight, nutrient, water etc. You probable had good nutrient which made up for the lack of leaf.
05 Nov 18, Rod (Australia - temperate climate)
I've planted spuds 16-18 weeks ago and have checked them only to find they are soft. What causes this?
10 Nov 18, Mike (Australia - sub-tropical climate)
Are they soft - rotten or just softish?
06 Nov 18, Mike (Australia - sub-tropical climate)
Sorry can't help you - try planting late April early May next year.
Showing 251 - 260 of 830 comments

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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