The State of New Mexico outlaws holding retention on subcontractors. What about landscape contractors? We have a large subcontract for landscaping around a large development and want assurance that the plantings survive. The wording on their warranty is not acceptable to us!
If you are thinking about landscape project, in my opinion it will be better to find good contractor which will solve all your questions and problems. For example I cooperated with https://avantilandscaping.ca/ company, they have a lot of experience in different projects and provide all necessary services.