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

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12 Mar 17, Bill Guy (Australia - temperate climate)
We are "virgin" vegetable growers with a small garden. Can we grow potatoes in big plastic pots that a neighbour left behind when she moved. These pots have a tube sticking out at the side at the bottom which i guess is for draining. We have 3 of these pots. We would like to grow new potatoes for Christmas. We live in Adelaide when would plant the seed potatoes. We interested in growing our own organic vegies. Appreciate any advice. Wish us luck. Regards Bill.
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13 Mar 17, John (Australia - temperate climate)
Potatoes can certainly be grown in large pots or tubs. If the pots are about 15 to 20 litres (or more) they wil be ideal. Do the pots have a separate bottom in them? they may be self-watering pots. Put some newspaper or a layer of old cotton clothes or part of the leg of an old pair of jeans in the bottom. This will help hold water and will eventually rot, helping to build up the soil. Add a layer of good potting mix then a layer of old rotted manure. Follow this with another layer of potting mix so that your pot is about half full. Place a couple of pieces of potato or 'seed' potato on this layer and cover with potting mix. Consistent watering is very important for all plants in tubs. As the shoots emerge keep adding potting mix until you have reached the top (some weeks). Potatoes form off the stems on this section of the plant, not off the roots at the base. In colder areas leave planting until late winter. In Adelaide you may be able to put the pots in a sheltered spot and grow them throughout the year. You should have no difficulty having new potatoes for Christmas. New potatoes can be bandicooted about a month after flowering. Just scratch down beside the plant and take them, being careful not to disturb the plant too much. When the tops die off we call them old potatoes. These ones will keep longer. We are very happy to support you in your venture, all my answers or comments will be 'organic'. Keep the questions coming, remembering: 'there is no such thing as a dumb question'. All the best in your move to grow your own 'clean', healthy food.
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11 Mar 17, Carol S (New Zealand - temperate climate)
Hi, do you know where I can get the purple skinned maori potatos with a whute waxy texture. Thanks
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14 Mar 17, Toni deRooy (New Zealand - cool/mountain climate)
Hi Carol l have heaps l am in Waimate in the South Island - would you like me to send you some for seed
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23 Mar 17, Sarah (New Zealand - temperate climate)
Hi Toni My husband and I have had a small crop (20 or so) and grown these rotating each year. Unfortunatly we believe we must have inadvertently eaten our saved ones and now we cant source any. We are in Wellington and I know it's a long shot but wondered if you could help. Kind regards Sarah
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10 Mar 17, Wendy (Australia - temperate climate)
Can a potatoes be grown in self wicking containers or would they get too damp?
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12 Mar 17, John (Australia - temperate climate)
Potatoes can be grown in wicking beds. If the beds are set up correctly they will only 'wick' the water that they need.
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09 Mar 17, ntobeko (South Africa - Semi-arid climate)
hi,im ntobeko from portshepstone,i would like to know that"how is it possible to plant a potatoes to grow bigger without any fertilizer or chemicals?
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09 Mar 17, John (Australia - temperate climate)
You certainly can grow potatoes without chemical sprays and fertilisers. Potaoes have been grown for hundreds of years without them. The soil needs to be friable or cultivated to at least 200mm (8") deep and have old manure worked into it. Plant the potato pieces about the same depth in the soil then cover. This depth is to reduce the chance of potato moths getting to the tubers to lay eggs. As the potato shoots emerge hill up around the stems with more soil or mulch and keep them watered. Potatoes are generally pest free and rewarding and a few can be scratched out about a month after flowering with the remainder harvested when the tops die off. Store the potatoes inside or in an airy, insect-proof container away from light. All the best with your potato growing!
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05 Mar 17, Garey (New Zealand - cool/mountain climate)
Hi.. when is the best time to dig Red Dakotas.? They are flowering at the moment.Should I wait until the flowers die off?? We live in the Mackenzie Country...Frosts probally will start April..Thank you
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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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