Posted: 21/10/2013 at 18:41
Dolgarrog, the two new beds took two 'jumbo' (1000 litre) bags to fill with about half a bag left over which I used to top-up the large bed. The one by the door is 180cm long x 60cm wide x 60cm deep - that's 648,000 cubic cm which equals 648 litres.
With square beds it's easy: Length x Width x Height (all in cm) then divide by 1000 to get litres. As FG said, it takes more soil than you realise to fill raised beds!
Verdun, the almond is an excellent idea!