Select country and language

Regrowing - how to utilise food waste sustainably

    14/05/2025

    4 min.

Regrowing gives vegetable scraps a new lease of life. 

 

Learn how to grow fresh fruit and vegetables from kitchen waste - simply and sustainably. We show you which vegetables are suitable and provide step-by-step instructions. 

The most important facts in brief

    Regrowing does not require any special equipment 

    Regrowing offers a resource-saving way to utilise food waste 

    Regrowing works on the windowsill, in the balcony box and in the garden 

    Regular water changes and planting in potting compost promote the growth of the plants 

What is regrowing?

Regrowing describes the practice of regrowing food waste. You can easily grow new plants from waste such as salad stalks, leek scraps or pieces of ginger. This reduces waste and saves you money.

 

Regrowing is not only sustainable, it’s also a wonderful and very easy way to do a bit of gardening, even if you live in a city apartment. That way, you can enjoy growing your own vegetables even if your crop is smaller than when you cultivate young plants.  

 

Other ways of transforming your home into an edible urban jungle includeplanting herbs or avocado trees. Here too you can grow new plants out of an avocado stone or the seeds of last year’s basil flowers. 

Which foods are suitable for regrowing?

The basic principle of regrowing is very simple: You do not need any special equipment and can start immediately. All you need is leftover vegetables, which you are sure to find in every kitchen.  

The most suitable vegetables and salads are those where the stems and leaves can be eaten. These include: 

 

  • Leaf lettuces such as romaine lettuce or lettuce. 

  • Leek vegetables such as spring onions or leeks.  

  • Celery stalks

  • Root vegetables such as carrots or parsnips

  • Remnants of onions or potatoesthat are starting to sprout are also ideal for regrowing. Green shoots that grow out of the tray can be planted directly in the soil and continue to develop there. 

    Regrowing fruit: Projects for advanced users

    While regrowing vegetable varieties is quite easy, regrowing fruit varieties requires a little more patience. Pineapple is a good example: Cut off the upper part with the green leaves, leave it to dry for a few days and then plant it in soil. After a few months you will see the first successes. 


    Avocado seeds can also be brought back to life through regrowing. Stick three toothpicks into the centre so that it balances on a glass of water. The tip of the core should point upwards. After a few weeks, a shoot forms. 


    Ginger is also suitable for regrowing. Place small pieces of tuber in the soil - these will sprout quickly. 


    Whether in the balcony box, in the garden or on the windowsill: Regrowing is possible almost anywhere and offers a sustainable solution for turning waste into useful resources. 

      Regrowing guide: How to get started

      You can get started straight away with just a few materials. Follow these step-by-step instructions: 

       

      • Selection of leftovers: Cut off the parts you need - e.g. the stalk of a lettuce or the ends of spring onions.

      • Water bath: Place the leftovers in a glass of water. Make sure that only the lower part is in the water to prevent rotting.  

      • Placement: Place the jar in a bright, warm place, e.g. on the windowsill. 

      • Water change: Change the water every two to three days to prevent mould growth. 

      • Planting: As soon as roots have formed, you can place the plants in planting soil . Keep the soil evenly moist and make sure there is enough light. This promotes further growth. 

        Practical tips for successful regrowing

        • patience. Some vegetable scraps grow faster than others. Herbs can produce new shoots after a few days, while fruit varieties such as pineapples need several months. 

        • Light and temperature: A sunny spot and temperatures around 20 °C are ideal. 

        • Use potting compost: Plants that are transplanted into the ground require nutrient-rich and loose soil. 

        • Maintain regularly: Remove dead leaves and make sure that the plants do not dry out. 
          NewsletterDon’t miss out on any news

          Our newsletter conveniently brings you all you need to know about our products.

          More stories