A couple who grew cannabis in their home to help people treat chronic pain have been fined $1000 and escaped criminal convictions.

Police found about 15-and-a-half kilograms of cannabis at Matthew and Elizabeth Pallett's Carrum Downs home last May. They also found ledgers referring to the people they provided the drug to and drug paraphernalia.

Matthew and Elizabeth Pallett outside the County Court on Thursday. Credit:Adam Cooper

A jury found each guilty on Wednesday of one count of cultivating the drug Cannabis L, which is deemed a narcotic plant under current law.

The couple maintained their innocence, despite admitting to police and the court to growing the drug. They argued they did this to make medicinal products for people suffering conditions such as epilepsy and for those with terminal illnesses like cancer.