Growing seedlings: From the GreenBox to the garden

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With the gardening season comes the time for barbecues, sitting outside and homemade salads - and what could be better than harvesting your own vegetables? With the Berlin GreenBox and our vegetable seedlings, it's child's play to turn your windowsill or balcony into a true vegetable paradise.

"Strong and healthy seedlings at last"

The GreenBox is the perfect incubator for your vegetable varieties. In our indoor greenhouse, your cuttings and seedlings grow all by themselves under ideal conditions, with plenty of light, water and care. So you don't have to worry about the right temperatures or getting enough sunlight - the GreenBox does the work for you. You can use the app to regularly check your water level and the current growth phase of your seedlings. It really couldn't be easier.

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Growing seedlings
Without any green fingers!

What you need to know

What are seedlings anyway?

Seedlings are young plants that you grow in potting compost as a pre-culture before they are planted in a bed or larger growing pots. This gives them a head start on growth and protects the seedlings from frost in the cold frame. In Germany, most cuttings can only be planted outside in May, as they don't get enough light before then and it is still far too cold for them. Nightshade plants such as tomatoes in particular do not ripen when sown directly.

Why do you grow seedlings?

Seedlings are ideal if you want to grow different types of vegetables in spring. Generally, you can calculate back from the desired planting date to find out when the seeds should germinate. Don't worry, the information on the best conditions can always be found on the seed packets. With the Berlin GreenBox, growing and propagating your vegetable plants is particularly straightforward. Even amateur gardeners without green fingers can't go wrong here!

Common problems with seedling growth

In Germany, it is too cold and dark before early summer to sow vegetable seeds directly in the ground. This is why most vegetable varieties need to be grown in pre-cultivation to give them a head start on growth. Growing vegetables on the windowsill is also ideal for small apartments in cities - so you can enjoy fresh, home-grown vegetables even without a garden. The GreenBox also saves you a lot of work: the seedlings can remain in the GreenBox until the roots have completely penetrated the PlantPlug and do not need to be pricked out, i.e. separated.

Controlled environment for optimum plant growth

We want to make juicy greens and tasty vegetables available to every household: That's why we've come up with an unbeatable concept that really makes growing a success for everyone. Our GreenBox is made of stylish birch wood and is an eye-catcher in any home. Thanks to the built-in plant lamp and the smart water tank with water level sensor, your little plants practically grow by themselves - and you can watch them grow!

The advantages of your Berlin GreenBox for growing seedlings

The GreenBox is the perfect incubator for your vegetable varieties. In our indoor greenhouse, your cuttings and seedlings grow all by themselves under ideal conditions, with plenty of light, water and care. So you don't have to worry about the right temperatures or getting enough sunlight - the GreenBox does the work for you. You can use the app to regularly check your water level and the current growth phase of your seedlings. It really couldn't be easier.

Setting up the Berlin GreenBox

Setting up the Berlin GreenBox

The installation of the Berlin GreenBox is done in no time at all. Our plug-and-play system makes your indoor greenhouse child's play - simply insert the 8 substrate cones into the slots provided and distribute your chosen seeds according to the instructions on the packet. Fill up the water tank, download the app and connect it to the GreenBox so that you are always up to date. You're done and can watch your young vegetables grow.

Free choice with the GreenBox: tomato seedlings or cucumbers?

The GreenBox has space for 8 PlantPlugs made of coconut fibers - simply insert the seeds into the substrate cones, distribute them in the slots of the GreenBox and fill up the water tank. With our ready-made seed sets, we make sure that the plants grow under similar conditions and fit together well. Of course, you can also choose from our seed assortment to put together your own little garden.

Choosing the right seeds for the indoor garden

Your indoor garden should be one thing above all else: you like it. Do you love eating tomatoes or seasoning with chillies? Or are you more of a salad fan and love cucumbers? Choose your seeds individually or select one of our sets and bring nature into your home. With the Berlin GreenBox, you can grow your own seedlings and enjoy the anticipation of fresh, organic vegetables. The time for pre-cultivation varies depending on the type of vegetable plant. However, you can generally start pre-germinating in spring, i.e. mid to late March.

Sowing the seeds

Sowing the seeds and promoting germination

Unlike with seedlings from the DIY store, you have everything in your own hands from the start when sowing vegetables. You can be sure that the seedlings have no diseases or pests and at the end of the day you will be holding the fruits (or vegetables) of your own labor in your hands. With our GreenBox, you are guaranteed unbeatable results in no time at all, as quality is important to us in all areas.

The integrated plant lamp provides the seedlings with the optimum amount of light every day. Thanks to the water tank, they always get exactly the right amount of water and the app lets you know at any time what stage the seedlings are currently in. Whether bell pepper seedlings, chili seedlings, lettuce seedlings or tomato seedlings: with the GreenBox, you are guaranteed to grow your favorite vegetables with ease.

Caring for seedlings

How to properly care for your seedlings in the GreenBox

With the PlantPlugs in the slots, you can start distributing the seeds over the substrate cones. Our seed packets tell you exactly how many seeds you should use per plug. Fill up the water tank and cover the PlantPlugs with the U-plates and germination caps. The temperature rises under the germination caps so that the seeds have the perfect conditions. At the same time, the U-plates prevent the formation of mold. After a few days, you should see the first small shoots . If these touch the sprouting cap, you can remove them. Our tip: The GreenBoxApp tells you when the time has come. Then you just have to make sure that there is always enough water in the tank.

Repotting the seedlings

The big moment: repotting the seedlings

By Repotting in larger pots or directly into the garden, you create more space for the plants to grow properly. At the same time, you free up the slots for your next GreenBox experience . But when is it time to repot the seedlings? It becomes really clear when the roots are growing long and healthy from the PlantPlug. Then you can take the whole plant, place it in a larger pot and fill it with peat-free soil fill it up. Make sure that the pot is not too big - this can damage the vegetables. Our PlantPots are ideal for repotting!

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Harvesting and using your seedlings

Even after repotting, your plants should be kept bright and warm if you don't have your own garden: They will do well on the balcony or windowsill. Now it won't be long before you can harvest and process your tomatoes, chilies, cucumbers, herbs, zucchinis or lettuce. Invite a few friends over or make your family a delicious mixed salad from home-grown vegetables and enjoy!

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Our insider tip

If you let lettuce grow, you can keep it longer if you pick from the outside in. This is because as long as the lettuce heart is undamaged, new leaves will continue to grow. By the way: If you want your young plants to last a long time, you can propagate them by cuttings and let them take root.

Growing seedlings without a GreenBox? Time consuming!

Spring has never been so green - with the Berlin GreenBox, your plants have the best head start to the gardening season and look good at the same time. From sowing to harvesting, BerlinGreen is the perfect choice for you and your cuttings. Uncomplicated, fast and without any green fingers, you will see the first results after just a few days.

5,000+ satisfied customers

  • Opinion on the GreenBox from Benjamin K. - easy to use

    "Super thing. Well explained and easy to use. It's just as easy as they say it is. It's fun to watch it grow. I'm looking forward to the harvest."

    - Benjamin K. 🇩🇪

  • Opinion on the GreenBox from Daniela P. - an eye-catcher

    "Our two GreenBoxes are becoming more and more fun to use and have also become an eye-catcher."



    - Daniela P. 🇩🇪

  • Opinion on the GreenBox from Pericles K. - child's play

    "Everything worked wonderfully and it made a very good impression right from the start! Easy as pie!"



    - Pericles K. 🇩🇪

  • Opinion on the GreenBox from Marie J. - overjoyed with her mini garden

    "I'm over the moon with my new mini garden, which not only provides us with fresh produce, but is also super decorative and makes a beautiful lamp thanks to the integrated light switch and canopy."

    - Marie J. 🇩🇪

  • Opinion on the GreenBox from Frank S. - easy to set up/assemble

    "Our planting set is exactly what we wanted. It looks good, is easy to set up and maintain with the app (great!). So we ordered a second one straight away."

    - Frank S. 🇩🇪

  • Opinion about the GreenBox from Dörthe S. - fast delivery

    "We really like the product. The delivery was super fast, well packaged and in a high-quality wooden design. The assembly and app are very simple and straightforward, so you can get started straight away."


    - Dörthe S. 🇩🇪

  • Opinion on the GreenBox by Florian F. - Observation of the new germs

    "My 10-year-old daughter really likes the GreenBox and I also find it exciting to watch the new sprouts after just 3 days as the plants get bigger and bigger."

    - Florian F. 🇩🇪

  • Opinion about the GreenBox from Jennifer K.

    "I'm delighted every morning when I check how far the seeds have germinated. My sister has received the second box and is also very pleased! "


    - Jennifer K. 🇩🇪

  • Opinion about the GreenBox from Manfred B. - super quality

    "Everything is just great with you! Simple ordering process - easy checkout - super quality - fast delivery And it thrives!!! What more could you want. I am very satisfied."


    - Manfred B. 🇩🇪

  • Opinion about the GreenBox from Julia J.

    "...And I am totally thrilled. Various lettuces, herbs, tomatoes and chilli have been growing in my kitchen for almost 2 weeks now. Everything has sprouted, which I really didn't expect."


    - Julia J. 🇩🇪

  • Opinion about the GreenBox from Nicole T.

    "The ordering process was simple and straightforward. I was able to put the Greenbox into operation without much effort, the first plants are germinating and even growing already. I'm already looking forward to the first harvest :)"

    - Nicole T. 🇩🇪

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After around 2 to 4 weeks, your young vegetables will be ready to move to a larger home. Take a look at the PlantPlugs from below first - only when the substrate is well rooted is the plant ready for repotting.

In short: all plants are suitable for growing in the GreenBox! Whether herbs, salads, vegetables, houseplants or even flowers and ornamental plants: You can't go wrong with the smart greenhouse.

The best time to plant your home-grown seedlings in the garden is mid to late May. By then it is warm and sunny enough in Germany for the sensitive plants to survive.

If you have grown your plants on the windowsill as a pre-culture, you need to acclimatize them to the weather in the garden. This process is called "hardening off" - you put your seedlings outside a little longer each day until it's time to plant them. But don't forget to bring them back inside at night at the beginning!

To ensure that the seedlings can recover well from repotting, you should water them sufficiently and fertilize them at regular intervals. The rule of thumb for both is: not too often, but rather a lot at once. This will prevent root rot. Also make sure that the plants get enough light so that they continue to grow.

You will get the best results if you give your seedlings enough time to root through the PlantPlugs. Then, after repotting or planting out, it's just a case of watering, sun, warmth and harvest. Bon appétit!