Experienced grower's notes on Double Delight

I've been growing plants seriously for over fifteen years and Double Delight remains a reliable favourite. For anyone starting out: the most critical thing is deadheading spent blooms to encourage reblooming. Everything else follows from that.

powdery mildew in humid summers is the challenge that trips up most beginners and some experienced growers too. I've been growing mine in a sunny south-facing garden border for three seasons now and the results are consistently good. strong disease-resistant root stock is what makes it worth coming back to year after year. first flush of blooms in late spring is when I show it off — it earns its place fully then.