How to prepare your greenhouse for the winter

Matthew Biggs offers five tips on what to do in the greenhouse to make sure you're ready for the winter.

Sowing while it is hot

While it is still warm and sunny, sow trays, pots or old bags growing in your greenhouse with crops "cut and come back" that you can harvest during the fall and winter. If you are looking for ideas inspired by the species, try the watercress, the leaves of oriental salad such as pak choi, mizuna and mibuna. Or stick to the classic varieties of lettuce, such as "valdor", chicory and radishes.

Flowers out of season

By providing extra heat, plants that are normally dormant during the early fall and winter months can be "woken up early" and appear to be better than many months compared to those naturally cultivated in the open.

Some, like hyacinths, are often available as "prepared" bulbs, which means they have been treated to simulate an artificial winter and will then sprout as they are planted. Buy quality bulbs in the fall and plant them closely in pots using the potting soil without peat and store them fresh and deep under the greenhouse bench until the leaves are 5 cm long.

Put in order

Along with spring, autumn offers a natural opportunity to do some essential greenhouse cleaning. Try to clean up both the inside and outside of your greenhouse on a hot, dry autumn day. Clean the windows of your greenhouse, paying attention to the individual frames.

Remove the moss from the overlapping panes with an old kitchen knife or a plant label. Use a cleaning product suitable for the specific greenhouse glazing system.

Check the gutter

Check that the gutters are leafless and clean the pipes. Scoop comes out with his hands, wears gloves and pulls debris away with a pipe or watering can.

While protecting and removing delicate plants, clean the floor of your greenhouse and disinfect all counters, shelving and equipment.

Get ready for winter

It weighs if you want to isolate your greenhouse with the bubble wrap during the winter. An important consideration is to maintain a balance between light quantity, heat preservation and ventilation.

Total insulation reduces the amount of light entering the greenhouse and increases the humidity, which can cause disease problems. To minimize this, be sure to remember to drill holes for the fans.

If you live in an area where winters are generally mild, it is worth taking the bet not to isolate at all but to have a heater and protective layers on standby in case of climate change. If the plants need more protection against frost, wrap them individually with the fleece in the greenhouse.

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