I treasured some Leopard's Bane for many years, it's not the most attractive plant by any means, a plainish yellow daisy type flower.
However, digging the plant up in Cardiff for me to replant in County Durham was the last thing my mum and I did together, at Easter 1991. Mum died in early September, quite unexpectedly, although she had leukaemia, she was well until a few days beforehand.
A dear and very talented professional artist friend painted the plant one year for me, and gave it to me as a birthday card. Even though the original plant died off after about 15 years despite my splitting efforts, I still have my precious watercolour to remind me.
About ten years ago I bought a very scruffy dried out oriental poppy from Wilko's and put it in my townhouse flowerbed where the leopard's bane had been. It has thrived and last year it was enormous.
My son split it, and the new plants are flowering this year. The red and black shaggy-petalled poppy flowers are absolutely stunning. One heck of a return for my 50p investment!