Grow potatoes on your balcony - yes, it's possible!
You can grow potatoes on your balcony! Very easily and with very little effort. You will be amazed at how much you can harvest in such a small space. Start collecting recipes!
- Plastic bag made of PVC or another large pot with water drainage at the bottom, a capacity of at least 30 litres, the larger the better. There are extra potato bags or pots for this.
- Waterproof base (e.g. clay drip tray) to avoid stains on the surface
- Seed potatoes, preferably organic. Potatoes from the supermarket are usually not suitable because they are treated with agents that inhibit sprouting.
- Egg cartons for pre-sprouting if required. No longer necessary if planting is done starting from about mid April
- A peat-free plant substrate; preferably a soil especially suited for tomatoes and vegetables
- If available, expanded clay as drainage layer
- Organic Multipurpose Plant Food or Organic Tomato Feed or Organic Multipurpose Plant Feed
- Super Strength Seaweed Extract
- Watering can
If you use pre-sprouted potatoes, you get a quick start and usually harvest more. But you can omit this step if necessary! Then you no longer need to start around mid April; you can plant them directly. For pre-sprouting, place the seed potatoes individually in standard egg cartons at a temperature of approx. 10 to 15 °C in a place with sufficient light from the start of March. After two to four weeks they form the first sprouts, which then quickly grow into small shoots in the soil.
It is essential that the pot has holes in the bottom so that water can drain off quickly. If possible, fill in an approx. 5 cm high layer of expanded clay, on which you can put about 25 cm of a peat-free potting soil. Depending on the size of the pot, plant two to four potatoes at a distance of about 30 cm from each other. Top this with enough soil to cover the tubers well.
Water the plants thoroughly. For best results, use Super Strength Seaweed Extract to stimulate sprouting. Also keep the soil nice and moist in the time that follows. But make sure that the water drains out well. The pot must not be left standing in water for a long time, otherwise the roots will get very little oxygen and could rot.
In the first four weeks, add Super Strength Seaweed Extract into the water once a week.
The potato plants are quite well grown after about two weeks. As soon as they are about 30 cm high, top up the pot with a 10 to 20 cm high soil layer, so that only the leaves stick out. This way, new roots and hence tubers grow on the newly covered shoots. Repeat this process twice. After about two months, pretty white flowers appear, by which time you need to add an organic fertilizer such as Organic Multipurpose Plant Food. Alternatively, you can also fertilize your plants with the liquid Organic Tomato Feed directly when watering them – first immediately after planting, then every two weeks with 10 ml/l of water. After a total of about three months, you can tell it is harvest time when the potato leaves have died. The potatoes are not ready for harvest until about two weeks after the leaves die.
- If you choose a dark pot, it will warm up faster and the potatoes will grow better.
- On frosty nights, cover the pot with a fleece or blanket (without breaking off the shoots), otherwise the plants will freeze.
- A place in the sun keeps the potato plants healthy and helps them grow well.
- One seed potato can give an yield of up to ½ to 1 kg