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

18 Oct 19, anon (Australia - sub-tropical climate)
15-20weeks from planting. Read up on the internet. HOW TO GROW POTATOES
12 Sep 19, Stephanie (Australia - cool/mountain climate)
I have potatoes growing in last years patch, from some left behind and unharvested. They look healthy, will they give a reasonable crop or should I pull them and put new seed potatoes in?
13 Sep 19, Anon (Australia - sub-tropical climate)
Preferable to plant something different each year in the same bed. Let some grow and plant some new ones and compare what they produce. Gardening is about trying things.
03 Sep 19, lia (Australia - temperate climate)
how much water does potatoes need every week, month or year?
04 Sep 19, Anon (Australia - sub-tropical climate)
A good watering 2-3 times a week. Watering would depend on climate zone - how hot or cold the weather is, a cloudy or sunny day, small or large plants. Small plants small watering more often, large plants longer watering less often. Small plants only have short root system - soil dries out. A 4m row of small plants may only require a minute or two whereas large plants may require 3-5 mins.
23 Aug 19, John G (Australia - temperate climate)
Can I re use soil where potato crops have failed due to poor fertiliser and not using seed potatoes? Im concerned about diseases/fungus. Thanks
26 Aug 19, (Australia - temperate climate)
If they failed then you may have disease/fungus. Have good rich soil before planting and give a good watering twice a week when they are established.
29 Jul 19, hazel (Australia - temperate climate)
i have very strong looking potatoe plants growing in my compost. Will i have potatoes on them.they have been growing all winter.
30 Jul 19, (Australia - sub-tropical climate)
Just dig by hand around the base of a plant to see if there are any potatoes forming - if so put the soil back and wait until the plant dies off before harvesting them.
29 Jul 19, Liz (New Zealand - temperate climate)
The easiest way is to dig up one plant to see if there are any potatoes .
Showing 221 - 230 of 830 comments

The handbook-which I provided the location to in my prior reply is not very beginner'ish but it is comprehensive covering issues you may never encounter- but you do need the reference material. I have a few thoughts to add. 1. Hilling up while the plant is growing-if you are covering leaves I find this fundamentally wrong. Leaves are specialized and designed to collect light, they are not roots. So I opt to plant my seed potatoes deep enough on day one- however I tend to have the luxury of very well airated, light soil. This means the seed potato has a steady air supply and can sense the heat from the sun even at deeper depths 2. Your seedpotatoes need all their potassium Immediately. Potatoes strangely take up all their potassium that they need really early. -and don't uptake more. If there is not enough potassium in the very early stages your potatoes might have hollow heart (looks like hollow rotting middles). Late application of potassium tends to be useless 3. Potatoes seem to respond really well to the addition of microryzal fungi - in my area we source that under pine trees in a forest- we just take some forest floor duff with a dust pan and add to the potatoe planting soil. To sum up - your seed Potatoes should be about the size of chicken eggs (if larger cut up ensuring an eye on each piece and allow a few days to heal/scab up before planting). You need to chit them(make them sprout-place in dark so they sprout). Plant in soil with Compost, a sorce of potassium and microryzal fungi. If for some reason you cannot source any compost/pottasium/microryzal fungi -plant anyhow potatoes are tough -there is still a good chance they will be Okay -depends on the condition of you soil. In my area I can water deeply once per week. Harvest when about half the leaves have fallen over as if to die. If you harvest sooner you may be compromising on size-because as long as those leaves can collect light they can store the energy in the tubers. Good luck - it is so much easier than it sounds- and all those diseases in the handbook are rare and if the plants are strong (well fed) they can manage just fine, potaoes are pretty tough root crop. In other words- you can grow potatoe.

- 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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