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

12 Jul 20, Denese Schick (New Zealand - sub-tropical climate)
Hi potato growers! i have been married for 18 years, and all that time i have searched for Red Dakota seed potatoes. i see a few people on here mention them. cant get them up north here. my elderly husband grew them for many years, and i would really love to grow them too. i grow Maori, red deseri, Concord, Dragar, and a few others. i have saved my own seed for nearly 25 years. and would love to grow this special red dakota, which he says are different from other spuds. thand in advance. i would be keen to deposit a few $ in exchange for just 3 or 4 seed in good condition. please be sure of your variety
26 Jan 23, Hugh (New Zealand - temperate climate)
Hi - I believe Red Dakota is now on the u/a list. The last I ever bought/ate was in the 1980s, near Blenheim. A well-established market gardening family grew R-Ds, and I was forewarned by the senior man that they would be possibly the last I would get, as they were moving to more popular cultivars. R-Ds were notoriously difficult to clean properly for baking - all those craters - and peeling was a challenge, but they were ideal for roasting.
13 Jul 20, (New Zealand - temperate climate)
Go on the internet and do some research. Look for small and large potato seed selling companies. I just looked at Morton Smith-Dawe but they don't have them, ring them and ask if they know of anyone growing them. Or ring the Potatoes New Zealand and ask.
05 Mar 20, peter barker (New Zealand - temperate climate)
can i grow seed potatoes in pots from march in Taranaki
08 Mar 20, ML (New Zealand - temperate climate)
It says to grow in the spring here. Also says that for sub- tropical Queensland Australia. They grow potatoes from April/May here. Give it a try then.
31 Oct 19, Chris grey (New Zealand - temperate climate)
Can I plant seeded potatoes the week after Christmas for a winter crop? And also if yes what seed potato would be the best? We live in north Canterbury
01 Nov 19, anon (New Zealand - cool/mountain climate)
First decide whether you are temperate or cool/mountain - look in the climate zone section. Then read up about the planting times. Then you decide what potatoes you are going to plant. That will depend on what is available in your area.
29 Mar 19, Bruce Gillanders (New Zealand - temperate climate)
Which are the indeterminant varieties of potato.
31 Mar 19, Liz (New Zealand - temperate climate)
Have a look at this site www.gardeningknowhow.com/edible/vegetables/potato/determinate-indeterminate-potatoes.htm Or do an online search - lots of articles available.
20 Mar 19, Donelda (New Zealand - temperate climate)
Do you cover up the green leaves with soil as well as they shoot through or just pile up the soil around the leaves and have the leaves themselves uncovered?
Showing 11 - 20 of 68 comments

I heard that the potato will stop sending nutrients to the tubers if the stalks are bent. One of the most successful potato harvests I have ever seen was a large container grown project where he used several layers (think of a layer cake) of horizontal plastic fencing and t-posts at each corner to hold the horizontal fencing to keep the stalks from bending at all and support them as they grew. They were able to get an absolutely massive yield with that method although he was sick all summer and didn't care for them or water them at all. I am not sure that the container growing was as pivotal in the results as just keeping the stalks from bending over. I have container grown before and will try it again this spring as well as ground growing using his methods to keep the stalks upright. I think another often overlooked issue is either too much or too little phosphorus and potash in 10-10-10 fertilizer. I think 'balanced' fertilizers can present real problems for root crops since they don't need or want balanced inputs. You will always have too much of something and too little of the other. Also there is a time delay on phosphorus while it stays in the upper part of the soil, so you can apply phosphorus to increase tuber formation, but it takes 3 months to disperse into the soil, while nitrogen sinks like a stone through soil an becomes almost immediately bio-unavailable (or runs off into the environment via water). So if you are using 10-10-10 you are going to end up poisoning your plants in order to get one or another nutrients available in the correct quantity. Plus factor in the time delay to bioavailability. I think it is better to thoroughly prepare soil before you put your garden to bed in the winter than prepare it in the spring (actually I have revived some fruit trees that were very old and no longer producing by fall fertilizing; I got almost $700 worth of organic pears and even more than this in apples last year through fall fertilizing). I also heard (and studied it last year in my own garden) that potatoes grow between the seed potato and the surface. If you bury them deep you will increase yields as there is more space for them to grow above the seed potato. But if you plant them shallow, they have a very narrow area to make potatoes in, significantly reducing production. This means in container gardening you need to put them at the very bottom of a 1'-6" (0.45 meters) tall container to get a full yield. I tried this method last year and doubled my production. I was putting them very close to the surface before last year. Also, potatoes need cool roots and won't produce anything at all if their roots are too hot in the container during the summer. Afternoon/evening shade is a must in Southern US zones or other hot environments. Or you could insulate or shade the container.

- Christian

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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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