Two women will face court over last month's Greenpeace attack on a genetically modified wheat trial in Canberra.

Greenpeace activists scaled the fences of the CSIRO experimental station at Ginninderra and used brush cutters to destroy a crop of genetically modified wheat.

Two Sydney woman, aged 34 and 47 years, will face the ACT Magistrates Court charged with damaging Commonwealth property and trespass.

It comes after a police raid on Greenpeace's Sydney headquarters last month in which a number of items were seized.

Police say they hope to identify more people involved in the crop attack.