Some plants, of course, are naturally late bloomers, like asters, helenium and chrysanthemum, but what about those that ‘should’ flower from early summer, but don’t? I am rather disappointed with the annual Chinese aster, callistephus (above), this year, as it is only just coming into bloom, especially as this variety, C ‘Duchess Blue’ is such a glorious shade. I am also growing C ‘Hulk’, which I think may be a greenish flower, which is even tardier. I have only grown these once before and was disappointed with their short flowering period, so with delayed flowering to take on boar too I might not bother again.