A greenhouse offers optimum conditions for growing vegetables, herbs and flowers – regardless of the weather and often much earlier in the year than outdoors. We have compiled the most important tips here to ensure that your greenhouse cultivation is a success right from the start.

1. the right time: planning with the KGT sowing calendar

Not every plant is sown at the same time. Some crops such as tomatoes or peppers require a long pre-growing period, others such as radishes or lettuce can be sown directly into the greenhouse earlier. With the sowing calendar from KGT you have a practical overview of the best periods for sowing and harvesting. This allows you to plan your cultivation in a targeted manner and achieve maximum yields.

2. use high-quality potting compost

Loose, nutrient-poor potting compost is ideal for germination. It promotes root formation without “burning” the tender seedlings with too many nutrients. Ensure that the soil has good water retention and permeability.

3 .clean working material

Clean pots, trays and tools thoroughly before sowing. This prevents fungal diseases and germs that could weaken the young plants.

4. uniform temperature and humidity

A greenhouse provides constant conditions – take advantage of this! Most plants require a temperature between 18 and 24 °C for germination. Also make sure that the humidity is even, but not too high. Waterlogging can promote mold growth.

5. light is vital

Young plants need a lot of light. Make sure that your greenhouse is in a bright location and is not shaded. Additional plant lighting can be useful for early sowing in late winter.

6. do not forget to ventilate

Even if it is still cool outside – regular ventilation prevents mold growth and ensures a healthy exchange of air. Short bursts of ventilation on sunny days are ideal.

7. pricking out and hardening off

As soon as the seedlings have formed the second pair of leaves, they should be pricked out (singled out) to give them enough space to grow. Before planting out in the open, it is also important to harden off the plants – in other words, to gradually acclimatize them to outside temperatures.