late summer plants
I have a fully south facing, baked clay garden. The soil is shallow with lots of rubble beneath and digging out is not an option. All the plants have flowered and are over by now every year. What ever I put in, even things that are meant to flower in autumn, finish by the end of july. There is no shade and anything I plant to create shade either takes up what precious water there is for other plants, or die because they cannot get roots down deep enough....
Does anyone have any suggestions of plants that can cope with these awful conditions and might also give me some real late summer colour?