By Green_finger
Suffolk,
United Kingdom 
Does anyone have any idea what this is? The stem has thorns like a rose & the pom pom is about the size of a golf ball.
It's growing on an area that was cleared where a hawthorn hedge used to be.
10 Aug, 2015
Answers
Thank you, Cammomile, I never would have guessed that. I learnt something new today.
11 Aug, 2015
I found this info about all sorts of different galls: http://www.bugsandweeds.co.uk/galls%20p1.html
11 Aug, 2015
And it is a rose...
11 Aug, 2015
Yes, Moon G, I'll be moving it to the hedgerow later.
11 Aug, 2015
Dt85 asked the same question on the 7th. It's called a robin's pincushion, a gall caused by a wasp.
11 Aug, 2015