Gardening: Late summer border blues

Here it is, the beginning of September, and in spite of a stressful summer in terms of hail, a few of weeks of extreme heat and little rain, the perennial border is still going strong. Blue and yellow seem to predominate. They’re a good combination as blue by itself can become lost (“faded” in full sun and in a dark hole in the shade) and the yellows and gold bring out the best in blues in terms of colour.
Anyone who has read the Brother Cadfael mystery series about the Benedic