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Growing Potato

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

(Best months for growing Potato in Australia - 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
  • An 'earthed-up' row
  • Potato flowers

Seed potatoes

Potatoes sold in nurseries and produce stores are certified seed potatoes. Seed potatoes are small potatoes (usually fairly dried up and wrinkled) which are free of viruses and other diseases. You are more likely to get a good crop from certified seed potatoes.

Before planting expose seed potatoes to light to start shoots growing. Avoid direct sun as this can burn or par-cook the seed! Let the potatoes grow shoots up to 1cm long - this can take a few weeks. In hot or dry climates sprout seed potatoes in seed trays of dampened potting mix.

Large seed tubers can be cut into pieces - just make sure each piece has at least one 'eye' or shoot. Let the cut pieces dry for a few days before planting or else they will probably start rotting.

Growing in the ground

Prepare the soil by digging in plenty of well-rotted animal manure or compost (don't use fresh manure as it will 'burn' plants). Dig a trench for the seed potatoes about 30 - 40cm wide and 10 - 20cm deep. Add a bit more compost/manure to the bottom of the trench and cover with some soil. Put seed potatoes 20 - 30cm apart in the trench, shoot-side up. Fill in the trench to cover the potatoes.

As potato shoots start to appear, cover them up with soil from either side of the trench. 'Hill up the crop' this way a few times in the first four or five weeks of growth, which gives the potatoes an nice loose mound of soil in which to grow. Now leave the shoots to develop on to form leaves.

Keep potatoes well-watered. The soil should be damp enough to stick to your fingers.

No-dig and container growing - ideal for home gardens

If you don't have a ton of space then no-dig and container growing both work well for home garden growing. Using container growing you can produce potatoes in any handy space, even on balconies.


Make a no-dig bed of potatoes by layering newspapers (or flattened cardboard boxes) at least six layers thick on an area to be planted. Spread your seed potatoes on top of the newspapers about 30cm apart, trying to get the shoots pointing upwards.

Cover the potatoes with layers of compost, weed-free straw, rotted animal manure, and other mulch materials, until the potatoes are covered by about 20 - 30cm. Don't flatten the cover down.

Water well. As the potatoes start to grow through, add more layers of mulch material and keep watered. After about four weeks of growing through and covering up, let the potatoes grow on without covering. As the mulch breaks down keep adding more mulch to keep the tubers covered.

Container growing

Get a container at least 40 - 50 cm deep with holes in the bottom for drainage. Shrub-sized flower pots work well. An old wheelbarrow will work if holes are drilled in the bottom. You can also make a 'container' using loose bricks or chicken wire.

Put about 10 - 20cm of mixed compost and potting mix in the bottom of the container and put your seed potatoes on top, about 30cm apart. Cover with about 10 - 20cm of compost mixed with mulch (straw, grass clippings. Water well.

As the potato shoots start to grow through, cover up with more compost and mulch mix and keep watered. Keep on covering up for about four weeks (but stop if you reach the top of the container!)

For both no-dig and container growing, keep the mulch well watered - wet enough to stick to your fingers but not sopping. If the potatoes dry out they will probably go scabby.

  • The longer potatoes grow, the bigger the tubers will be.
  • Don't grow potatoes in the same place as other solanum crops as they share many diseases - for example, don't grow potatoes to follow a tomato crop, or vice-versa.
  • You can start harvesting a few tubers as soon as they are big enough to eat - dig around under the plants and retrieve a few, and cover up the rest to keep growing.
  • Potatoes exposed to light will go green, so keep them covered up with straw and soil as they grow. Green potatoes are poisonous!
  • Potatoes accumulate cadmium and other heavy metals, so avoid fertilizers which contain these elements. Similarly, avoid using tyres as containers for growing potatoes as they can leach heavy metals.

Culinary hints - cooking and eating Potato

Peeled or unpeeled and scrubbed, potatoes can be boiled, baked, fried and roasted. - The only way they are not used is raw.

Keep in a pot of cold water after peeling, otherwise they will discolour.

Your comments and tips

05 Jan 20, Sarah-Jane Wicks (Australia - temperate climate)
We used seed potatoes to grow Kilgore in our school garden. As the tops have now died off we harvested them today, only to yield Ferny tiny potatoes. Less than 300g from a whole 3.6m x 1.2m garden bed. The potatoes were watered a minimum of 4-5days per week, were regularly fertilised and grown beside sweetcorn. How did this go so wrong. We yielded less than the bag of seed potatoes that we planted. The soil was beautiful and rich. We mounded around the growth for the first 6weeks. So disappointing. Any help greatly appreciated.
06 Jan 20, Anon (Australia - temperate climate)
I would say you over fertilised them way too much, and probably too much water. That would produce a lot of leaves and little potatoes. In future prepare the ground adding manures compost etc., don't over do it though. They WILL NOT require any more fertilising. When young a lightish watering each day or two. When bigger a good watering 2-3 times a week, depending on temperatures. Put your figer in the soil to see if wet or dry and water accordingly.
03 Nov 19, Woza (Australia - temperate climate)
Are the green potatoes safe to eat? I always get a few in my crop
04 Nov 19, (Australia - sub-tropical climate)
IT IS NOT SAFE TO EAT THEM. It is caused by the potato being exposed to the sun. In future keep the potatoes covered with soil to stop this happening.
17 Oct 19, Alan (Australia - sub-tropical climate)
When do they harvest potatoes
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.
Showing 1 - 10 of 463 comments

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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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