More than 1000 cannabis plants and $800,000 cash have been seized from a rural property in Manawatū.

Police found the a large-scale commercial cannabis operation at a Feilding home while responding to a firearms incident on January 2.

When searching the property the next day they found two large purpose-built sheds growing the drug.

A total of 1102 cannabis plants were recovered, ranging from seedlings to 325 mature plants ready for harvest.

A 44-year-old man and a 46-year-old woman appeared in Palmerston North District Court on January 3 charged jointly with cultivation of cannabis. Both have name suppression.

They were remanded on bail without plea to appear again in Palmerston North District Court on January 23.