Green roof substrate

IM

I've built a gazebo to act as a barbeque shelter - believe it or not, it's been known to rain when I grill - and am going to put a green roof on top.

I'd rather not pay for the specialist firms' own blend, as I'm hoping it's just a question of mixing some aggregate with compost - but can anyone share a recipe for the optimum mix?

twopenny

I think you need to look back at the gardening shows. Particularly the smaller ones from pre pandemic. There were many there. I think an impressive one was Gardeners World.

You want whatever seedum grows in as that's the usual.

Yup, I put a search for Gardeners World green roof and lots came up.

I'm sure you've factored in the weight to the roof before you do this

Working_Mum

I watched an episode of George Clarke's Amazing Spaces and there was a wooden house which had a sedum roof - it looked like individual trays of sedum had been potted up and just placed on the roof close together to fill the space.

I recycled a piece of fake grass and popped it on my shed roof and placed sedum up there. It is going a treat and is slowly covering the roof.