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We've finally got the doors on our new 14x15ft polytunnel at the weekend, and have been watching the temperatures inside rise and fall (nothing planted as yet!).
We were amazed that while the night-time temps were down to 3C, today with lots of sunshine, while the outside air temp was 13C the inside hit 38C! With this in mind we're just working out what our ventilation options are.
The tunnel has double sliding doors at each end, and we have the option to fit a net panel to some/all of the doors - the instructions suggest doing so for the summer months and going back to polythene for the winter.
So a couple of questions:
1. At what times of year do people switch from polythene to netted? Is there a nice easy guide, like 'after the first frosts' or 'when air temps hit XC'?
2. What's the best approach for managing temps in the winter months? Is it a case of keeping things shut up unless warm weather is forecast? Or opening doors during the day and closing at night? Or some other magical incantation?
Really looking forward to getting things growing!
We were amazed that while the night-time temps were down to 3C, today with lots of sunshine, while the outside air temp was 13C the inside hit 38C! With this in mind we're just working out what our ventilation options are.
The tunnel has double sliding doors at each end, and we have the option to fit a net panel to some/all of the doors - the instructions suggest doing so for the summer months and going back to polythene for the winter.
So a couple of questions:
1. At what times of year do people switch from polythene to netted? Is there a nice easy guide, like 'after the first frosts' or 'when air temps hit XC'?
2. What's the best approach for managing temps in the winter months? Is it a case of keeping things shut up unless warm weather is forecast? Or opening doors during the day and closing at night? Or some other magical incantation?
Really looking forward to getting things growing!
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