The Irish Farmers Association want the law change to allow them grow medicinal cannabis.
Recreational use of the drug is banned in the country, while special licences can be granted for its medicinal use.
The IFA say the tillage sector has declined by around 20 percent over the past couple of years and farmers want options to diversify.
Horticulture Executive with the union is Pat Farrell - he says with T-H-C being illegal in Ireland, the most valuable part of the plant is currently being destroyed here: