If you are feeling the chill, then it’s time to turn up the heat in your Polytunnel and keep young, tender plants snug and warm until spring arrives.
Keep Your Crops Warm
We know heating a Polytunnel or Greenhouse can be an expensive luxury and nobody likes the idea of wasting energy or money, so here are some top tips to help keep costs down and make heating your Polytunnel more efficient this winter.
1) Insulate with bubble wrap
A layer of bubble wrap fastened with string inside your Polytunnel will help to block icy draughts and reduce heat loss. Simply tie a string between the hoops and carefully – although a little bit fiddly, feed the bubble wrap between the polythene cover and the string..When buying bubble wrap, look for the purpose made horticultural bubble wrap insulation as it is toughened and UV stabilised.
Larger bubbles will let more light in. You can also use bubble wrap insulation to protect outdoor pots preventing your favourite pots from cracking in freezing weather.
2) Only heat the area that you need to
Heating a large Polytunnel or Greenhouse can be wasteful and expensive especially if you only have a few delicate plants you wish to nurture throughout the winter months. Try to group them together in one section, create a bubble wrap insulation curtain to divide the Polytunnel into smaller areas which can be heated more economically. Using a mini Polytunnel inside a Polytunnel like “double glazing” along with a few candles will help raise the temperature.
3) Use horticultural fleece
On extra cold nights. A layer of frost protection fleece will provide protection from cold winds and frosts, you will also find it helps to warms up the soil too. Temperature protection can be increased by simply adding multiple layers of fleece and is often used for covering cloche hoops, mini polytunnels, cold frames and lining greenhouses. Remember to remove the fleece during the day to ensure the plants receive adequate ventilation and light.
Originally posted 2016-11-17 09:00:54.