Growing Grounds Farm is a program of Transitions Mental Health Association. It is a functioning, non-profit, wholesale nursery that provides horticultural therapy, socialization opportunities, and soft job skills training for adults with severe and persistent mental illness. It describes its mission as "to grow a large selection of quality plants while providing an empowering environment where our employees progress on their path towards recovery."

It has a storefront in downtown San Luis Obispo where the general public can buy plants and seedlings, and also sells plants wholesale to nurseries and landscapers.