Overwintering on the balcony greenhouse is not an insoluble problem for most plants. Even small greenhouses can be upgraded to be frost-proof with double-wall or hollow-wall panels without any major material expenditure, so that even exotic plants can survive the cold season unscathed.
How to winterize a greenhouse on the balcony?
In order to prepare a balcony greenhouse for overwintering plants, you should cover it completely with plastic panels (hollow chamber or double-wall panels) made of polycarbonate. These panels are frost resistant down to -25°C, shockproof, UV resistant and provide additional insulation in the cold.
If you don't have a garden of your own, you can use a few technical precautions to use your greenhouse on your balcony to overwinter certain plants. For example, those that cannot tolerate the dark basement or are too bulky to be maneuvered down several floors. A frost-proof conversion can be achieved by completely cladding your already used balcony greenhousewith plastic panels.
Hollow chamber panels as greenhouse insulation
The panels, which are quite affordable in terms of price, are made of polycarbonate, are shockproof, UV-resistant and available in various thicknesses. Cut to size and mounted on a wooden frame with hinges, an insulating panel for the greenhouse on the balcony is quickly screwed together, which can then be opened in milder temperatures andused additionally as ventilation. If necessary, the panels can be covered with bubble wrap, which means that even particularly severe frost cannot harm your plants.
Tip
The installation of additional heating should be avoided in the interest of fire protection but also of peace with neighbors and landlords. Polycarbonate panels are even used in aircraft construction and have a frost resistance of up to -25 °C.
