How to Grow Potatoes in Containers 
As I said earlier, learning how to grow potatoes is a very simple and straight forward process. All you need is a nice sunny spot, and a container. You can use any kind of container from a dark polythene bag to a dustbin, and pretty much anything sized between. Some gardeners use discarded compost bags as they are an ideal size.
You could also make a large circular loop of chicken-wire and line the inside of it with cardboard, then add soil as per the instructions below. At the end of the growing season, just cut away the chicken-wire and you’ll be left with a big pile of earth full of potatoes!

Regardless of what container you choose, the most important thing is to ensure it has plenty of drainage i.e. lots of holes cut or drilled into the bottom to allow water to run out. Also, if the container is translucent or will let in light, you will need to cover it with something such as cardboard or newspaper to prevent the light hitting the growing spuds.

Once you’ve chosen your container, follow these simple steps:

1. Fill your container / bag with four to six inches of good quality compost.

2. Place your tubers onto the top of the compost, so the sprouts (if chitted), or eyes are pointing upwards. Space them sparingly - for a twelve inch diameter container, only use a maximum of three tubers. For a fourteen inch diameter container use about four tubers, and so on.

3. Cover the tubers with another four to five inches of compost, and water sparingly. From here on, keep the soil continuously moist but never wet.

4. If you are using a flexible bag as a container, it would be a good idea to roll down the sides, to help the sunlight reach the plant foliage as they grow.

5. As the plants appear and grow taller, continue "earthing up" by adding more soil so that only the top inch or so of the plant is peeking through the soil. The new potatoes will form in an upwards and outward direction from the original planted seed potato, so continue "earthing up" until you reach about 1.5ft(18in) to 2ft(24in) of soil depth.


How to Grow Potatoes in Containers

Feeding & Watering 
Watering is where it can all go wrong when learning how to grow potatoes, so pay close attention to the moisture levels. Growing potatoes need to be continuously moist, never wet, and must not be allowed to dry out! The guy spinning the plates on the sticks springs to mind here! So if you haven't installed a reliable irrigation system, you'll need to be disciplined and keep a close eye on the soil regularly. You will probably have to water at least twice a day during the summer time.
Feeding with a liquid organic fertilizer or even tomato feed once every fortnight will ensure you achieve a good crop with maximum yields.



Harvesting 
The potatoes will be ready for harvesting when the plants start to turn yellow, but they will start providing an edible a crop before then. Get your hands into the soil and have a rummage around. If any potatoes feel ready to be harvested, then by-all-means pick them. Green potatoes are poisonous – avoid. An important thing to remember when learning how to grow potatoes, is that the potato plant is a member of the nightshade family!



Harvesting 
The potatoes will be ready for harvesting when the plants start to turn yellow, but they will start providing an edible a crop before then. Get your hands into the soil and have a rummage around. If any potatoes feel ready to be harvested, then by-all-means pick them. Green potatoes are poisonous – avoid. An important thing to remember when learning how to grow potatoes, is that the potato plant is a member of the nightshade family!

Freshly harvested potatoes are fabulous if eaten straight away! If you intend to store them, allow then to dry a little in the sun for an hour or two, then place in paper or cloth bags and store in a cool dark place.

How to Grow Potatoes in Containers

Diseases and pests 
Potatoes have historically been susceptible to certain types of disease such as blight. Blight is also a disease that can spread and ruin your tomato and other crops, and it is for this reason that you need to grow your potato plants away from your tomatoes, as well as your cucumbers, squashes or any other types of vegetables in the marrow family.


A good companion for your potato plants would be beans, marigolds and cabbages.


There are varieties out there on the market nowadays that are much more resistant to these issues. Another way to help protect your crop is to feed it with organic composts rather than with artificial fertilisers which can attract more pests.Also, growing potatoes in containers will help to minimise the risks, especially if you are using new compost / soil each time.

Buying fresh tubers each year from reputable dealers will usually ensure a trouble-free disease-free growing season.






Saving Seeds 
Saving seeds from your crop should be ok for the first few years, but you may find a deterioration over the subsequent generations due to the build up of inherent virals and diseases.


Seed potatoes are grown in certified disease-free areas, often at high altitude to ensure the crop remains disease free. This is necessary because of the generational deterioration issues.


How to Grow Potatoes in Containers

Food Stuff

More info and more food at:  http://www.container-gardening-for-food.com