The Time of Greenhouse Season

Garden Life
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Utilising your greenhouse means you can finally stop the winter dormancy and begin to seed the first vegetables of the new gardening season. Greenhouses offer great protection against snow, heavy rain and too much sunlight. In addition, greenhouse gas provides the perfect growing conditions that can possibly evoke an earlier and longer harvest. Moreover, it has a positive effect on the quality of vegetables. The question is; which kinds of vegetables are suitable for this time of the year and what do you have to consider to gain flourishing vegetables?
First of all, you need to differentiate between a heated greenhouse and an unheated one. In an unheated greenhouse it is advisable to have an earth thermometer to keep an eye on the temperature. It is also helpful to set up hot plates should it get too cold at this time of the year. If you do not want to put up hot plates you can grab a covering of fleece or foil for plant protection. It isn't totally necessary in a heated greenhouse to have hot plates – you just need to make sure that the temperature stays at a level of approximately 20 degrees.

Before you start to seed, the greenhouse should be revamped and the soil should be prepared. Most important is to remove all weeds and loosen the soil. To get a nutritious soil you can mix in some compost. Once this is done, the seeds can be pricked in. 

While planting you need to keep a sufficient distance between the seeds so the plants can dry easily after nightly dew formation as well as after watering. A distance of 10 to 15 centimeters is perfect. 

During the day it can get very warm in the greenhouse if the sun shines and as a consequence, the warm air absorbs a lot of humidity. When cooling down over night time, the warm air loses the absorbed water in the form of small drops. These drops permanently fall down onto the plants, which can lead to rottenness. To counteract condensation water as well as stress cracking of the stem, be sure to allow sufficient ventilation for your plants. If done regularly, fresh air also influences the whole microclimate in a positive way. This also helps to prepare the plants for being moved outside later in the year. While ventilating you just have to be careful that plants do not get a cold breeze directly at their sensitive leaves.

Which seeds suits which greenhouse?

For a heated greenhouse 

Beginning till the end of January:
Turnip cabbage, sweet pepper, radish, small radish, onions, spring onions, cucumbers, tomatoes

End of January:
Red and white cabbage, turnip greens

For an unheated greenhouse 

Beginning till the end of January:
Chard, lettuce