Posted: 17/09/2015 at 13:35
Alex,,for sure mix in some grit there. Quite likely you will lose osteos over winter then if you have cold clay soil so grit will help.......lightly mound up grit or gravel around the base of the plant too to encourage drier comditions around it. Perhaps have your replacement plants...from your cuttings...to hand for spring planting. They are ideal for walls, for cascading over rockeries, etc. How about a free drainaing mkxture in a tall pot?
(I,prefer grit to vermiculite or perlite in the open ground)
philosophical Linny? Practical and adaptable too. Gardeners have to be I guess