Rosemary Beetle seen on campus

Chewed leaves on the rosemary bushes outside the potting shed were the sign of damage from the alien Rosemary Beetle, Chrysolina americana. This species is spreading rapidly through the UK after introduction around 1990.  The RHS are surveying it’s distribution And have advice on the control of this species in a garden environment http://www.rhs.org.uk/Science/Plant-pests/Rosemary-beetle.