Although this plant grew easily from seed, and returns consistently and vigorously every year in my sheltered London garden, I can't help but find it very uninteresting. The flowering period is long, but the flowers are small and nondescript. However, the floppy, untidy growth is what puts me off the most. Whilst I have a cottage-style garden, I think there is a line between relaxed and untidy. A messy plant with uninteresting flowers, however easy it is to grow, won't be back in my garden next year. I've had enough of it!