This potato grow bag is a great way to grow 4-6 seed potatoes or other deep-rooted vegetables in a small space. It has a resealable window for easy harvesting of new potatoes.
The bag has a 40cm diameter and is 55cm in height with strong webbing handles. It is made from woven UV-protected polyethylene which allows roots to breathe.
See this article on The Fail-Safe Way to Grow Potatoes (Growing Potatoes in a Bag) for a video tutorial.
Fill the bottom of the bag with 10 - 15 cm of 1:1 straw and compost mix.
Place 4-6 seed potatoes on top and add another 10cm of the soil mix to cover the top of the tubers.
Keep the soil mix moist and place in a sunny position. As the tubers sprout, the green shoots will emerge from the soil.
Periodically add the soil mix to cover these shoots leaving only the tips exposed.
Once the soil is at the top of the bag, allow the plants to flower.
From this stage, you can begin to harvest new potatoes from the resealable window.
Once the plant has died back, you can empty the bag and yield the full rewards.
A 1kg bag of seed potatoes is enough to fill 2-3 potato grow bags.