[scattygirl]

The how reflective a material is is termed its "Albedo". Aluminium foil tops most lists as up to 95%, so I've been correct in saying that using this method nearly doubles the amount of light your plants get.

Best I get some tin foil in then 

[Mark's Sussex Allotment]

If it didn't work, I don't think I'd have been using it for the past 40 years! 

I certainly wouldn't have recommended it if it didn't!

Good stuff, I wasn't dismissing your advice DD, I just wanted to know if it was worth me getting some before my wife thought I was mad

[DD.]

You can get some and show her this thread by way of explanation.

It won't help though. She'll still think you're mad!

[Mark's Sussex Allotment]

More than likely, but thanks for the help. It's much appreciated

[pdblake]

I'm trying it for the first time this year and it seems to be working, at least the plants aren't all trying to lean out of the window

[Mark's Sussex Allotment]

Another stupid question, sorry.

But how exactly do you do it, and where do you situate the foil?

Do you wrap it around the top of each pot, in a circular fashion?

Anyone that has easily accessible pictures?

[DD.]

The foil goes behind the plant so that the plant is in between it and the source of light, (the window!).

I tend to just stick mine underneath the pot/tray then bend it upwards. With a strategic nip and tuck it's self-supporting.

You can foil line a box with the front cut off and stand several pots in it, rather than do each individually,

[Mark's Sussex Allotment]

Thanks once again DD.

[GrannieAnnie]

Brian thought I was mad when I wrapped the tin foil round the seed tray.

I have 12 small pots in a seed tray that has no holes in the bottom.  Like DD said, the foil tucks under the tray at the back, than fold it round the sid and a few nips and tucks and it stands up by itself!  So just one piece of foil between 12 pots!

[GYO Girl]

I have done some detailed research on behalf of this forum, and the result I came up with was that Milk Tray boxes are the best for the job!

[parsley]

    

[DD.]

Here's my cucumbers from last year.

Foil shoved under the container and just bent up:

[A Reyt Tayty]

Last year, I just used some white paper. It worked fine.

[marcofez]

Used this idea to great effect!! Was thinking if the weather stays like this, will line my poly with it

[Mark's Sussex Allotment]

Thanks, you guys are the best