night time temps

[brooklynodog]

At what sort of night time temperature would folk recommend the doors to g/house and p/tunnel be left open?

[Flummery]

I'm still closing mine and it was over 10 last night. However, it's still so variable. I usually wait for it to be into double figures so I'm probably just being cautious!

[kittykat8]

I have been leaving mine open since the beginning of may to have a good airflow, just coping what the old commerical grower does he is 80 years old

Marion

[parrot1974]

If you go to BBC Gardeners' World - practical gardening advice from the experts at Gardeners' World they have a 7 day weather forecast for your area, giving loads of useful information, such as highs and lows, what it feels like, humidity etc. Brilliant resource. I've been leaving my door open during the day (along with all windows, vents etc.) but shutting it at night, just leaving the louvre open.

[Norm]

I'm a great believer in watching the moon (and howling to it now and again)so I'd wait until after the next full one.

[brooklynodog]

If you go to BBC Gardeners' World - practical gardening advice from the experts at Gardeners' World they have a 7 day weather forecast for your area, giving loads of useful information, such as highs and lows, what it feels like, humidity etc. Brilliant resource. I've been leaving my door open during the day (along with all windows, vents etc.) but shutting it at night, just leaving the louvre open.

Yes, usefull resource but I use the Met office`s website as far more accurate. I was however asking about night time closures?

[parrot1974]

Never found the Met Office or BBC too accurate (regularly promise us rain which doesn't appear), but different parts of the country may find them more accurate.

Surely it depends on what you've got in your greenhouse, as it will also affect humidity levels?

[rustylady]

I close the greenhouse door to keep the neighbourhood cats out (well maybe leave it open it just a crack), but if the overnight temperature is forecast as 10+ then I leave the window open.

[brooklynodog]

Trouble is, Ive got one of those auto vent windows, whcih doesnt open till 20C or so

[brooklynodog]

Never found the Met Office or BBC too accurate (regularly promise us rain which doesn't appear), but different parts of the country may find them more accurate.

Surely it depends on what you've got in your greenhouse, as it will also affect humidity levels?

I know what you mean, but if the Met Office are not accurate, then no-one else is going to be as they are they origin of all weather knowledge.

[Alison]

Never leave my door open at night, even in the hottest days of summer. I have both an auto vent and window which will open if it gets too hot.

[Flummery]

Forecast is for local low night time temps again in the next few days - 6 degree or so. I'll continue closing up at night.

[Catrina]

We are going on holiday a week on Sunday so I have been leaving mine open at night for the last three nights. Because the MIL who is looking after the plot and polytunnel cannot go up twice a day to look after it. So I was hoping that it would be okay but tonight I have closed both doors.

Just for anyone's information I needed a door on the bottom of the opening to let airflow but stop animals getting in. My OH bought some battons to make a frame but because he didn't have time to make it I put the shelves off my mini greenhouse on edge with two one on top of the other and thread a cane through each end. It works very well and allows load of fresh air in but I felt that it might be a bit cool tonight so I have closed both doors though there is mesh at the top of the door.