Unusual to see hollyhocks on a walk round a nature reserve like Westport Lake. I guess the seeds may have been dropped by someone feeding the birds? It’s more the plant you would find in a cottage garden?
I’m glad it hadn’t been grubbed up. It suddenly reared up about six foot high next to the low hedge of the maze that has been created at the far end of the lake. It definitely is a hollyhock plant, my mum used to grow them in our garden. When the flowers fade they make big round seed heads that easily break into flat seeds, shaped a bit like orange or satsuma segments.