The Oregon Landscape Contractors Association (OLCA) is a not-for-profit statewide professional organization that advocates for the landscape community on local, state and national issues affecting both the profession and the community we live in. OLCA functions through the active volunteer work of our membership. OLCA members are professionals, who take pride in their work and uphold the highest standards in horticulture, environmental practices, agriculture and the landscape business. Members are licensed, certified and insured and continue to advance their knowledge as technology, research and practices develop.