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What to grow in the greenhouse in the winter: list of sowings and plantings to be carried out incold greenhouseduring autumn and winter.
Growing in a greenhouse, cold greenhouse or heated greenhouse
In Northern Italy, for the cultivation of summer vegetables such as peppers, tomatoes and aubergines, it is necessary to set up oneheated greenhouse. In the South, as long as you live in areas with a particularly mild climate and, as long as you have onegreenhousewell isolated and in a sunny position, it will also be possible to grow tomatoes and aubergines under greenhouses.
The cold greenhouse allows for earlier harvests in spring, anticipating planting or sowing, and allows for late harvests in autumn, up to the beginning of winter. In practice, the cold greenhouse allows you tocultivate from January and February, all the vegetables that you would go to grow between the months of March and April. On the contrary, it allows you to protect crops to continue harvesting certain vegetables even in late autumn.
As stated, thecold greenhouseit is much more comfortable and effective in the south. A well-managed cold greenhouse in southern Italy allows you to grow tomatoes and aubergines with yields that go up to the months of November and December, if not beyond when the climatic conditions are favorable.
What kind of greenhouse?
Not all greenhouses are the same. We have already brought to your attention the difference betweencold greenhouseisheated greenhouse. In these two large categories there are different characteristics to look for. On this page we will focus exclusively onwinter crops in cold greenhouses (therefore in an unheated greenhouse).
What makes the difference is the degree of isolation that your structure can offer. The chosen coverage is decisive. The most common covers are those in polyethylene which can be of a simple or thermal type.
I recommend the choice of thermal polyethylene which produces less condensation, therefore lowers the risk of developing mold and fungal diseases, in addition, thermal polyethylene has a longer duration and insulates more, of course, it is also more expensive but it protects your winter crops in greenhouses.
Those who live in the south, in particularly mild areas, can choose sheets with a thickness of 10 mm, in the rest of southern and central Italy, it is better not to go below 15 mm while those who live in northern Italy will have to choose 20 mm sheets.
What to grow in the greenhouse in the winter
Here is a list of what you can grow in the unheated greenhouse, in full invenro:
- Brussels sprouts,
- wild strawberries,
- tomatoes *
Those who live in northern Italy shouldn't risk growing tomatoes in a greenhouse if they don't have one heated greenhouse. This is because the tomato could also lead to the production of fruits but, due to the cold, it would give you tomatoes that are not very juicy and have inadequate organoleptic properties.
For all instructions on thecultivation of wild strawberries in pots or greenhouses, I refer you to the pageWild strawberries in vase.
Tips for growing vegetables in greenhouses
The first rule for a good greenhouse cultivation lies in the air embroidery. Every day, during the hottest hours of the day, the greenhouse must be opened to allow your crops to air. In the absence of this practice, condensation will tend to accumulate in the greenhouse which, in turn, will lead to the formation of rot, fungi, molds and parasitic attacks of various kinds.
It is important to support crops with specific fertilizers and, if necessary, to thin out the vegetation: do not overcrowd yourgreenhouseotherwise, despite the air changes, the plants could develop fungal diseases and rot.