Growing kohlrabi – If you want to plant kohlrabi in the garden, you should consider a few points.
Apart from time and the right temperature, several other factors are essential to let the garden’s kohlrabi sprout.
We will show you what is necessary here.
A related video about “How To Grow Kohlrabi With Quickcrop?” here to watch.
Video Credit: Quickcrop
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Table of Contents
Planting kohlrabi: growing kohlrabi in your own garden!
Kohlrabi can be successfully grown in your garden, and it is a very vitamin- and nutrient-rich member of the cabbage family.
In contrast to many other cabbages, kohlrabi is not getting harvested from the flower heads, as is the case with cauliflower and broccoli, but from the bottom’s thickened stem.
In its cultivation, the kohlrabi also differs somewhat from its colleagues. Here is what you should consider when planting and growing kohlrabi.
Growing kohlrabi – What matters when planting kohlrabi?
- You can easily sow the plant every four weeks from April to July.
- The different seeds are available on the Internet or at your local supermarket or hardware store.
- Temperatures between 18 and 25 degrees are best for the plant to grow ideally.
- Make sure that there is a distance of about 30 by 30 cm between the plants.
- Kohlrabi develops best in a medium heavy soil, which has been treated with compost beforehand. Otherwise, the plant also grows in other neutral soils and is therefore relatively undemanding.
- After about ten weeks, the kohlrabi is ready for harvesting. However, if you let it ripen, the vegetables can become woody.
- When harvesting, cut off the plant directly under the tuber with garden shears.
Growing kohlrabi – How to proceed when planting kohlrabi?
- As the plant is very thirsty, you should water it regularly and several times a day. Here you should make sure that the water is evenly getting distributed over the kohlrabi. Too much water on one spot can cause the plant to burst open.
- While the plant is growing, you should carefully remove weeds that grow on or around the plant.
- Vermin, such as white cabbage butterflies, earth fleas, or whiteflies, can also harm the plant, so you should also control them.
Kohlrabi – growth, and cultivation
Kohlrabi can easily be sown from April to July in four-week intervals. Then fresh vegetables are available at any time from summer to autumn.
Favorable temperatures for growth are 18 to 25 degrees Celsius. The cultivation temperature may be between twelve and 15 degrees.
Mostly the seeds are sown in bowls; the seedlings are then getting planted in the garden beds. A planting distance of 30 by 30 centimeters is getting recommended.
The correct planting depth is necessary: the individual seedlings should be getting planted in the soil up to the cotyledons. It means that the small potted plants should be getting planted a few centimeters deep into the ground.
During cultivation, the plants like a lot of moisture. As the soil, they prefer a humus-rich and evenly moist terrain.
Regular watering is essential for growing kohlrabi.
Kohlrabi is considered an insensitive vegetable. In temperate regions, the plants can even overwinter outdoors without any problems.
If the plants only receive water irregularly, the tubers can burst easily. Therefore, even watering is very important. It makes sense to fight weeds from time to time; a hoe is best getting suited for this.
Furthermore, one must pay attention to vermin. If cabbage flies, aphids, or earth fleas are not getting controlled, they can affect the harvest.
Do not let kohlrabi ripen too long when growing.
Kohlrabi ripens already six to ten weeks after sowing. With traditional varieties, a tennis ball’s size is enough: then they are ready for harvest.
With more extended ripening, the vegetables often become woody. For harvesting, the plants are getting cut off with garden shears just below the tuber.
Growing kohlrabi on the balcony
If you don’t enjoy or have access to a garden but have a beautiful and sunny balcony, don’t despair. Kohlrabi cultivation is also thriving there.
However, the mandatory minimum distance of 25 cm between the individual kohlrabi plants is a limiting factor. Usually, the plant pots are only large enough to accommodate a kohlrabi plant.
A homemade raised bed can be an alternative to the plant pots.
Buy Kohlrabi Seeds
Kohlrabi seeds are available in every well-assorted specialized trade and at many garden mail-order companies. A seed bag with about 50 seeds is available for purchase. First, the seeds are put on in small pots (diameter approx. 5-6 cm) or on pot plates.
Here it is essential to use a loose and water-bearing planting medium (such as compost). During the germination phase, kohlrabi needs temperatures around 20°C.
These temperatures are best reached on the windowsill or in the greenhouse. After the kohlrabi has germinated, the temperature can be getting reduced.
Attention: It should not fall below 10°C; otherwise, no tubers will be getting formed! The kohlrabi should not be planted in the bed before the end of March to avoid night frosts.
Buy kohlrabi plants
The safest way to get healthy and robust young plants is to buy kohlrabi seedlings in specialized shops. Often the young seedlings are sold on multi plates with ten or more plants.
The seedlings are also very affordable. You can already buy a potted plate with about ten young plants. The plants have usually left the greenhouse phase at the time of purchase and are 6 to 8 weeks old.
Harvest kohlrabi: When is harvest time?
The kohlrabi’s harvesting period is not easy to narrow down, as it can be getting planted from early spring to midsummer. Instead, there are some characteristic signs you should pay attention to so that you can harvest your beloved kohlrabi at the right time. We have listed some tips for you:
- About 12 weeks after planting, the kohlrabi tubers are ready to be harvested (differences depending on the variety reserved)
- An above-ground tuber is oval
- Blue types need longer than white kohlrabi varieties to mature
- leaves are juicy green
- White varieties tend to lignify more than blue varieties
- Harvest kohlrabi before the first winter frost at the latest
- Don’t wait too long; Tissue lignifies with increasing plant age
Storing and preserving kohlrabi
Store kohlrabi in the refrigerator – Kohlrabi keeps for about a week in the fridge. Before that, you should remove the woody parts and the leaves to reduce the evaporation surface.
Freezing kohlrabi – Kohlrabi can be stored well even when frozen. Wash and portion your kohlrabi beforehand and blanch it in boiling salted water for 2 to 3 minutes. When defrosting, less of the juicy green will be lost.
Boil down the kohlrabi – Before you boil down your kohlrabi, you should blanch it for a few minutes. After blanching, put the kohlrabi into preserving jars. You can now fill up the glasses with salted water or a delicious vegetable sauce.
Important: Whether saltwater or sauce, both liquids should be boiled and cooled down before pouring them. It ensures a longer shelf life. After closing the glasses, they should be boiled again for about 20 to 30 minutes.
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