Daughter has a pair of fairly expensive long gloves especially for such work. They are actually 'needle proof' and you see the demo of a hypodermic needle being pushed point first into them and it just bending.
However and especially in the summer it seems such work is a conflict between wearing the PPE (and any additional gear like these needle-proof gloves) and overheating. ;-(
After a day getting large hedges into shape it often looks like often she's been self harming, the amount of scratches down her arms!
Cheers, T i m