Our aim at Greenhouse Heaters is to bring you as many informative articles as we can to help you get the most from your greenhouse and to ensure your seeds, plants and vegetables get off to the best start and can grow in the best environment you can provide.
Greenhouse heaters are one of the most important considerations when you’re looking to grow your plants in a greenhouse. Without a sufficient heating system in place, your plants and vegetables can end in a very sorry state due to the cold of winter and frost.
In addition to heating, and for the opposite reasons outlined above, you’ll will also need to consider the cooling and ventilation aspects of your chosen system for the summer months. If your greenhouse gets too hot then your plants can become dehydrated.
The thermo-period is the change of daily temperatures within your greenhouse during the day / night cycle. The majority of plants engage in maximum growth when the daytime temperature is 10°F to 15°F higher than the night time temperature. A plant will photosynthesize and respire at optimum temperatures during the day and then slow its rate of respiration during the cooler night. As you can see, it’s imperative that you maintain this thermo-period if you are growing during the winter months in a greenhouse.
If any greenhouse heaters you install aren’t sufficient to maintain this temperature differential, then your plants and vegetables will suffer from poor growth. Photosynthesis is slowed down, generally, when the plant is exposed to low temperatures and with photosynthesis slowed, this results in slower growth and lower yields.
Conversely, during summer months, high temperatures can cause an increase in respiration at levels greater than the rate of photosynthesis which results in the products of photosynthesis being exhumed more rapidly than they are being produced. This can produce a degradation in the growth of the plant and it’s yield.
For growth to occur, photosynthesis needs to be higher than respiration – so having a good greenhouse heater can help immensely
Heating and other options for your greenhouse
This is why it’s important for your greenhouse to have the correct heating solution that you can afford – the more you can encourage photosynthesis the greater your growth and yield.
There are a number of options for you to consider.
- Greenhouse Heaters – by purchasing yourself one or more greenhouse heaters, you can thermostatically regulate the temperature within your greenhouse and help protect your plants and vegetables against frost during the winter. If you’re looking cheap and you have a small area to heat, you can get a simple electric greenhouse heater for less than £30.
- Bubble Wrap Insulation – even without a greenhouse heater, simply coating the inside of your greenhouse with inexpensive bubble wrap, you can prevent heat loss and help maintain a healthy temperature for your plants.
- Horticultural Fleece – during the winter months a simple fleece laid over your plants can retain a few extra degrees and offer some protection against a frost. Just make sure you remove it during the day to prevent the temperatures getting too high.
No matter how you choose to heat your greenhouse – whether with greenhouse heaters or not – you need to make sure that it’s well ventilated with good air circulation. Good ventilation is essential at keeping fungal diseases at bay which can thrive in a high humidity environment.
Make sure you water your plants early in the day and only provide what they need as this will keep down the humidity within your greenhouse and help prevent a build up of condensation. When condensation does occur, make sure you open your vents to allow fresh air to enter your greenhouse but remember to close them as the evening draws in so as to retain the greenhouse heat.