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If you want to harvest delicious vegetables as early as possible, you should start planting early. The first vegetables you can already prefer in March. Especially in species that start late blooms and fruits such as artichokes, peppers and eggplant, you should not wait too long. Fruit vegetables originating from warmer regions and exotic fruits, for example Andean berries, require high growing temperatures. Cabbage and leeks have lower claims, leafy vegetables such as spinach and chard, but also the robust root vegetables like it rather cool. Especially salad germinates at temperatures above 18° C only hesitant.
If you have sown broad-bred in pots, the seedlings are "pikiert", so transplanted into individual pots, as soon as the first leaves leaf. Then the temperature is lowered slightly (see table). The following applies: The less light, the cooler the further cultivation, so that the young plants grow more slowly and remain compact. If the temperatures in the cold frame or greenhouse fall below the stated values, the risk of shootings increases, especially with kohlrabi and celery.
Vegetable seeds germinate at these temperatures
The seed soil should be fine-grained and nutrient-poor. In the trade you get special propagation soil, you can do such a cultivation soil but also yourself. Distribute the seeds evenly on the ground. Large seeds such as peas and nasturtium can also be individually sown in small pots or multi-pot plates, fine seeds, however, better in seed trays. Lightly squeeze the seeds and soil so that the germinating roots get in touch with the ground immediately. On the seed pack you will find information on whether the plants are dark or light germs. So-called dark germs should be sprinkled with a thin layer of soil, while the seeds of light germs remain on the surface.