Hello mate,

My breeze blocks are just laid on to some stones and stuff on top of the compacted soil. Actually, I think if the ground is firm enough, you can lay the base directly onto the soil anyway. I've used the breeze blocks as a precaution more than anything else. My base come with what looks like tent pegs to secure the base to the ground, so I'm going to use them. Plus with the weight of the greenhouse (although mine is glass) I can't see it moving around much.

My greenhouse is going up this weekend, but my intention (so far) is to put in a small raised bed (on top of the membrane) along one of the sides and grow shallow rooted plants in that. The rest will be grown in big pots (tomatoes, aubergines, cucumber, chillies).