When to open Greenhouse door?

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Ghost

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When to open Greenhouse door?
« on: March 08, 2011, 09:16 »
Hi

What time of year should I start opening the door to ventilate the Greenhouse? Should I wait till it's warmer? There's a vent in the top of the greenhouse but I can't see a way of keeping it open (The greenhouse was at the house when we brought it). I've just seen an Auto vent opener though so might invest in one.

Thanks

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DD.

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Re: When to open Greenhouse door?
« Reply #1 on: March 08, 2011, 09:22 »
Whenever it gets too warm for whatever you've got in there.

Had mine open yesterday afternoon.
Did it really tell you to do THAT on the packet?

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Ghost

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Re: When to open Greenhouse door?
« Reply #2 on: March 08, 2011, 09:28 »
Not sure how you're supposed to know if it's too warm. I currently have Spring onions and Lettuce in there.

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DD.

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Re: When to open Greenhouse door?
« Reply #3 on: March 08, 2011, 09:32 »
They won't want it too hot. Mid sixties max will do nicely. (oF, not oC)!

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Ghost

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Re: When to open Greenhouse door?
« Reply #4 on: March 08, 2011, 09:37 »
Thanks

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Kristen

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Re: When to open Greenhouse door?
« Reply #5 on: March 09, 2011, 19:01 »
Opening the door will create a draught, and if its much colder outside the greenhouse than in that may stress the plants.

If you can get away with Convection (throw the vents open, but not the door) I think that would be better.

But if the temperature is heading for 70F / 20C then more important to control temperature than worry about draught - but the less you open the door, the less the draught.

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Gandan57

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Re: When to open Greenhouse door?
« Reply #6 on: March 09, 2011, 20:34 »
An auto vent opener is an absolute must for a greenhouse.
I`m left handed, what`s your excuse?

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mumofstig

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Re: When to open Greenhouse door?
« Reply #7 on: March 09, 2011, 20:38 »
They're only about 15 on ebay at the moment  ;)
Lesley x
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DD.

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Re: When to open Greenhouse door?
« Reply #8 on: March 09, 2011, 20:42 »
An auto vent opener is an absolute must for a greenhouse.

That's where I've been going wrong for the last 45 years then.

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Kristen

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Re: When to open Greenhouse door?
« Reply #9 on: March 10, 2011, 23:32 »
That's where I've been going wrong for the last 45 years then.

Hehehe ... me too!

I like to open the vents wider on the side away from the wind .. and to leave a couple open a crack at night during the summer.  Hard to do with the automatic ones.

But of course if you can't be there Morning and Evening then Auto-vents are a boon.

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Paul Plots

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Re: When to open Greenhouse door?
« Reply #10 on: March 11, 2011, 00:37 »
Whenever it gets too warm for whatever you've got in there.

Had mine open yesterday afternoon.

Snap.... or should I say "slide"?
       
                Amazing how hot they can get once the sun's out for an hour!!  :ohmy:
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Paul Canning

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Re: When to open Greenhouse door?
« Reply #11 on: March 13, 2011, 17:13 »
I managed to pick up a louvre vent for my greenhouse for 6 at the local auctions so am well chuffed.

However, the main reason for watching out for one is that the greenhouse didnt come with a roof opening window at all :-/

So Im wondering if i need one at all now?

What do people think, I would think that it would be sensible to have a roof one as well as the lower louvre one as theres a better chance of fresh air passage?

I would also be planning to put an auto opener on one if not both for convenience
Paul

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Kristen

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Re: When to open Greenhouse door?
« Reply #12 on: March 13, 2011, 18:19 »
Hot air rises :)

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muntjac

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Re: When to open Greenhouse door?
« Reply #13 on: March 26, 2011, 00:17 »
i must be common then.. i just stick a 1x1inch stick in my windies about now and pull it out if its gonna be frosty.. and if i start to sweat when im in the greenhouse .i go outside and leave the door open till late afternoon  :unsure:
still alive /............

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Paul Plots

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Re: When to open Greenhouse door?
« Reply #14 on: March 26, 2011, 00:46 »
i must be common then.. i just stick a 1x1inch stick in my windies about now and pull it out if its gonna be frosty.. and if i start to sweat when im in the greenhouse .i go outside and leave the door open till late afternoon  :unsure:

The simple life for me too. A stick works well. My dad's greenhouse (that I use as well) has side vents that can be slid out of the way altogether - useful when the summer's in full fling.

Needs not to be too much of a fuss as my 91 and 96 year old parents look after the greenhouse when I'm not there (which isn't that often  ::)).



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