Starting with the mountain style roof, I decided to include sedums as a base and add in other alpines for variety, just as suggested in the guide. Choosing the non-sedums first, it was easy to see colour schemes developing and then fit the appropriate sedum species alongside them.
The challenge with the meadow scheme was not to overload it with too many species in a small area. There’s just so much choice! This is where looking at flowering times carefully is helpful, and there are several pairings of plants that in theory should provide similar-looking flowers and colours throughout the season: Scabiosa columbaria and Knautia arvensis, Achillea millefolium and Daucus carota, Primula veris and Anthyllis vulneraria, and Campanula glomerata and Campanula rotundifolia to name a few.
It’s looking good so far, for regular photo updates follow our facebook and twitter @boningaleroofs.