Geranium riversleaianum 'Mavis Simpson' is a graceful, free-flowering hardy geranium producing delicate pale pink flowers with fine veining from late spring into summer. Low-growing and spreading, it forms a soft mound of grey-green foliage and is particularly effective as ground cover or at the front of borders. Fully hardy and easy to grow, it thrives in sun or partial shade and suits informal and naturalistic planting schemes.