Perennial cornflower - during 2008 my sister and I took our Mother out for the day.
We stopped at a roadside stall and bought some unmarked plants at bargain basement prices.
When we got home I planted them all in the same pot and they duly blossomed and produced some lovely flowers during the summer and spring.
I was unfamiliar with the perennial cornflower and enjoyed the process of its growth.
Winter came and the plant died off but come spring it has come back to life, more prolific than before and is making more of these delightful blue and purple flowers for our pleasure.