raised bed height

[the germinator]

morning all,
here goes with the first of a thousand questions i have, sorry its another raised bed one...

What is the required height for home made 4ft and 3 ft sqr wood beds? other posts advise 30cm, does it depend on veg to be grown?
I intend using 150mm decking, would this be too shallow on its own? They will be going on top of lawned area.
Should i line the boxes with a suitable membrane do they really help?

Did search other postings for answers but no luck.

Thanks for reading, only another 999 to ask

Gary

[PottyPot]

Originally Posted by the germinator

morning all,
here goes with the first of a thousand questions i have, sorry its another raised bed one...

What is the required height for home made 4ft and 3 ft sqr wood beds? other posts advise 30cm, does it depend on veg to be grown?
I intend using 150mm decking, would this be too shallow on its own? They will be going on top of lawned area.
Should i line the boxes with a suitable membrane do they really help?

Did search other postings for answers but no luck.

Thanks for reading, only another 999 to ask

Gary

12" is a good depth, mine are 18" and making gardening much easier for me, I also have membrane on the bottom because the ground was covered in nettles and brambles I then bark chipped the lot

[the germinator]

Thanks for reply pottypot, i've seen the pictures of your garden very impressive.
Just wondering how long did it take you fom scratch to achieve such healthy looking beds borders etc.

Gary

[PottyPot]

Originally Posted by the germinator

Thanks for reply pottypot, i've seen the pictures of your garden very impressive.
Just wondering how long did it take you fom scratch to achieve such healthy looking beds borders etc.

Gary

I'll sort the photos out and upload them. It took me 12months of hacking through the wilderness and clearing it