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Basil is a sun worshipper and likes it warm. To give the plants a head start in growth, basil is pre-grown on the windowsill. In this article, we explain how you can sow and propagate basil.
Basil (Ocimum basilicum) is an annual herb from theLamiaceae family. Due to its tropical origin, the herb likes warm and sunny conditions.
Basil plants can be cultivated in the garden, on the balcony in a pot or in a raised bed. You need a sunny spot with loose, humus-rich soil. As basil is a weak grower, the soil does not need to be particularly rich in nutrients.
Basil may grow as a perennial, but it is never hardy! As already mentioned, basil likes it nice and warm. As soon as temperatures fall below 7 degrees, the herb dies. Therefore, you have no choice but to sow the herb again every year. Alternatively, you can dig up your protégés in good time and put them in a warm place to overwinter. However, you need to find out in advance which varieties grow as perennials. The popular'Genovese' variety, for example, only grows as an annual and needs to be reseeded every year anyway. You can read more about the individual basil varieties here.
In order to give the heat-loving herb a head start in its growth, basil is grown on a windowsill or in a greenhouse in our latitudes and only planted outdoors when the temperatures are warmer.
Depending on the variety, you can start growing on the windowsill in March or April. Before sowing, place the basil seeds in lukewarm water or chamomile tea. This increases germination. Chamomile tea also has an antibacterial effect and prevents mold growth.
After the last frosts, from mid-May, you can also sow basil directly into the bed or pot. From then on, the temperatures will remain fairly stable and no more severe cold snaps are to be expected. It is usually worth sowing the seeds widely and watering them. If the plants are too dense later on, you can prick them out.
In our lexicon you will find information on numerous basil varieties with cultivation periods, tips on planting and harvesting. You will also find good and bad neighbours to help you plan a mixed crop.
Discover lexicon nowIt is best to water your pot from below so that the small seeds are not washed away. To do this, pour the water into a saucer or bowl in which you place the seed pots.
When pricking out, the growing young plants are divided and planted in individual pots in order to grow faster. With basil, on the other hand, 5 to 10 young plants are planted as clumps in a pot or bed. When pricking out the basil seedlings, you can place the fragile young plants a little deeper in the soil than before. This gives them stability. Water the young plants well so that the roots have contact with the soil and grow well. They will now continue to grow on the windowsill for a few more weeks until it is warm enough to plant them out.
You can plant your pre-grown young plants outdoorsfrom mid-May. Before that, it is advisable to harden off your plants. If you have been growing them on a windowsill, they will not be used to temperature fluctuations, wind, rain or direct sunlight. You first need to get your young plants used to this. To do this, place them outside for several hours a day for about a week. At first you should choose a shady spot, but towards the end you can also place them in direct sunlight.
You can easily obtain your own basil seeds and sow them again next year. Your basil variety should be seed-resistant for this. Normally, you would harvest your basil diligently and thus delay flower formation a little. The leaf aroma diminishes with the flowers and the basil is no longer nearly as tasty.
If you want to harvest seeds, let the basil flower directly and let the seeds ripen on the plant. Harvest the seeds when the flowers have dried up and died. Cut off the inflorescences completely and hang them upside down. Now you can tap or strip out the seeds. They are small and deep black and therefore easy to distinguish from the dried parts of the plant.
I hope this has whetted your appetite for growing your own basil. If you have any questions or comments, please write to us at [email protected]. Would you like to receive helpful gardening tips all year round and plan your own beds in the best possible way? Then register here or download the Fryd app for Android or iOS.
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Cover picture by jackmac34 on Pixabay.
Marie studied agricultural science at the University of Hohenheim. Her main focus is on ecological agriculture and permaculture. She writes articles for Fryd to educate people about ecological interrelationships and alternatives to current land use. Our current economic systems, especially in agriculture, have numerous negative effects on nature and destabilize our ecosystems. We need a great diversity in our gardens and beds again to counteract the extinction of species. Every gardener can contribute to creating and maintaining habitats and food for a wide variety of creatures. With her articles, she would like to pass on her experience in dealing with natural systems and give people the opportunity to contribute to a stable ecosystem and thus also to securing our livelihood.
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When is the best time to sow basil?
They can be sown on the windowsill from March; direct sowing outdoors is possible from mid-May.
Basil is a light germinator and the small seeds are only lightly covered with soil and pressed down.
What is the ideal location for basil?
Basil prefers a bright, sunny location with loose, humus-rich soil.
Can you harvest your own basil seeds?
Yes, by allowing the flowers to form and the seeds to ripen on the plant, you can obtain your own seeds.