Growing Potato

Solanum tuberosum : Solanaceae / the nightshade family

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

(Best months for growing Potato in Australia - tropical 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

03 Nov 23, Scott (Australia - sub-tropical climate)
The other reason to hill potatoes is that the plant gets quite tall and top heavy. This makes it susceptible to getting blown over by wind. This will cause the plants to die off early. If you hill it mid season you stop the plant from blowing over and you increase the size of the potatoes as they have had longer to grow and mature.
13 Nov 23, Christian (USA - Zone 7b climate)
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.
06 May 23, Benjamin Chapman (Australia - temperate climate)
I have been told that the terms I used (specific and non-specific) could be wrong. Someone else has said the terms are "determinate" and "non-determinate".
08 May 23, Celeste Archer (Canada - Zone 5a Temperate Warm Summer climate)
I'm not certain if the initial question is using the correct terminology or not... there are so many different ways to categorize things. If it is determinate verses indeterminate -- then it is like tomatoes -- the indeterminate are like a vine, and continue to grow - which means they CAN BE towered ( but don't have to be) and they will continue to put out "layers" of tubers as you hill up. However, indeterminate potatoes can be grown as determinate.... you DON'T HAVE TO tower or hill up -- so long as you plant the seed potato deep enough. You can get more potatoes per square foot of real estate out of the indeterminate type of potato, but it does take longer. So you need to think about - time verses space verses growing methods.
15 Mar 23, Loreley dunwell (Australia - sub-tropical climate)
Where can I buy seed potatoes, please. We are in the Lockyer valley. Last year we grew sebago and had a wonderful crop but can’t find any at the moment,
31 May 23, Rebecca (Australia - tropical climate)
Happy Valley Seeds has some at the moment
21 Mar 23, Anonymous (Australia - sub-tropical climate)
Try some produce agency (supplies to farmers of farming stuff), then a nursery or on line.
28 Nov 22, Louise (Australia - temperate climate)
Is it too now too late to plant potatoes on a bag in southern highlands? Cant seem to find seed potatoes will organic do? Thanks
03 Dec 22, (Australia - sub-tropical climate)
Check calander at the top of the page
08 Nov 22, Peter Chapman (Australia - temperate climate)
My potatos have come on very nicely. I just started digging them for new potatoes. Wife did some with parsley garlic and butter - delicious. Now my question is how long can I leave my potatoes in the ground after the tops dry off. We live in a Retirement Village which has lovely large veg plots. We do not have a lot of room to store spuds. Cheers Pete
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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. Gardenate 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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