This plant is known as the Cheddar pink, presumably because Cheddar, UK is part of its native haunts. I grew my lone plant from seed over ten years ago and it never fails to perform in June with good-sized, spicy-scented flowers. The plant was growing in a brick wall that surrounded the Douglas fir bed, but we removed the wall this year to do work on the native plant garden. The Cheddar pink appears nonplussed.
I don’t do anything to support this plant. In 2020, I will try to get some cuttings in July so I can plant one of these in the memory garden and give some away for sales or neighbors.