Growing Potatoes in bags or sacks is a great weekend project and if you start now you could have your very own new potatoes in May.
There are many different varieties of potatoes on the market. There is nothing better than a small round white new potato in spring. SWIFT OR ROCKET are great varieties to start with. You can buy them here
Any bag or pot will do as long as it holds approximately 50 litres of compost (an average size bag). You can buy potato bags HERE. These are immediately fit for purpose as they are best for the job, they are strong and can be used year after year
Fill the bag to 6inches with general purpose compost and evenly space five potatoes on top. Then put 8-12inches of compost on top of the potatoes and gently firm and water in.
The sack should always be moist but not soaking wet and leave in the sunniest part of the garden. After a few weeks potato shoots will start to appear. When they do, top up the compost to just cover the shoots and continue doing this until the top of the bag is reached.
By the time May arrives there will be lovely green top growth. Keep it well watered as the potatoes will be lapping it up.
There is an old school of thought that when the top growth starts to yellow and wilt the potatoes are ready. The only real way is plunge your hand in and have a rummage! If they are a nice size tip the bag out and enjoy the harvest!
You can use the spent compost to bulk out large pots, to help condition your borders or spread over bare patches in the lawn and sprinkle with grass seed.