Clean the greenhouse
It is likely that your greenhouse has been empty throughout the summer season, but whether this is the case or not, it is best to clean it out so that it is clean and healthy to accommodate new crops. This means that you must do the following:
- remove dead plantsas well as the weeds which may have developed there;
- inspect every nook and cranny of your structure to make sure that insects have not come to settle there to spend the winter in warmth;
- proceed to clean the walls with soapy water. You can take the opportunity to check that it is not damaged, as well as to wash the shelves and accessories. In this way, you limit the possible risks of illness;
- if the floor of your greenhouse is earth, then you can prepare the soil to accommodate your seedlings by digging it lightly, then raking it over the entire surface.
Carry out your seedlings in a greenhouse
In September, you can carry out different sowings and different plantings in your greenhouse.
Vegetable side
You can sow the few vegetables whose development does not suffer from the reduction in sunlight hours. These vegetables include lamb’s lettuce, spinach, cabbage, leeks, parsley, endives, etc. Choose the beginning of the month to sow these seeds, as this will allow you to benefit from a better yield. You can also transplant the onions that you have previously sown into the ground. This way, your vegetable garden will be able to continue for a good period of the year.
Flower side
If your greenhouse offers you the possibility of protecting your outdoor plants from frost, it also allows you to prepare for next spring by sowing flowers and plants. They will benefit from faster development thanks to the microclimate of this shelter.
You can sow gerberas, gazanias, cyclamen, etc., without forgetting climbing plants such as schizanthus and salpiglossis. In this way, you will then benefit from faster flowering.
Tree side
If you are a fruit tree lover and your greenhouse allows it, why not start planting peach or apricot trees in your greenhouse?
Protect your plants
If it is still a little early to install your frost-resistant plants in your greenhouse, you can start preparing them so that, when the time comes, all you have to do is bring them inside. This involves the following tasks:
- clean your plants by removing wilted flowers and dried leaves;
- if necessary, prune your plants;
- repot plants for which this is necessary;
- monitor the weather forecast to take shelter as soon as the risk of frost is forecast. Remember that some plants are colder than others, so it will be necessary to bring them in according to their needs.
Fight against heat and humidity
In September, temperature variations can be quite significant and it can still be very hot. The main dangers facing your greenhouse in September are heat and humidity. To counter them, it is important to take a few precautions:
- Be careful not to overfill your greenhouse so as to maintain good air circulation.
- Likewise, consider thinning your seedlings.
- On hot days, open your greenhouse door and windows as wide as possible to prevent heat from building up in this enclosed space. On the other hand, at night, it may be useful to close it in order to maintain a sufficient temperature. By ventilating your greenhouse well you will prevent the appearance of mold, fungus and mildew.
- Water preferably in the morning. This will help prevent water from stagnating all night.