In the cool of the early morning I wandered down The Rose Walk and  found that Dart's Dash has put out its first blossom. Rugosas are the first roses to bloom in my garden, but this is especially early. I've been watering which the roses love and temperatures in the 80s and today in the 90s have persuaded the roses that summer might almost be here. Dart's Dash is a low growing rugosa, but has the rugosa's vigor…