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This is the second year I've had this monster in my garden. Don't know if it is a dangerous plant.The flower is from last year.
It's a great plant for attracting wildlife. The flowers (between the prickles) are a good nectar source and later in the year birds will eat the seeds. People used to use the pickly heads for combs and combing wool. Not any more though.
I will try to keep it alive. I wanted something good for beasties especially for bees
Lat/Lng: 53.4371, -2.1645
OS grid ref: SJ891933