Re: Raised bed.

Thanks everyone for your replies much appreciated, it seems there are no hard and fast rules on forming a raised bed as the variety of successful methods mentioned by yourselves prove.
I think I will take a guess and use two thirds top soil and one third compost and keep my fingers crossed.
Brian.

Re: Raised bed.

I have never built one but I would probably mix the soil, compost and some grit for a bit of drainage and then mix it all together.

Re: Raised bed.

I have two x 2sq M of raised beds, to fill them I used compost and top soil.
Compost alone is ok for filling but but you will need to add something that is alive with microbes, nutrients etc, so a good well rotted pile of manure will do the trick.
For 1sq M of raised beds you will need about 150 litres of compost mix.
Any used compost I have left from containers etc gets thrown into the beds and topped up with a couple of bags of topsoil each year. I grow veg in the raised beds.