Green roof maintenance is dependent on the type of green roof. It is accepted that an intensive green roof will require more maintenance in terms of weeding, irrigating and general garden maintenance than an extensive green roof system. Living roofs can be designed to have little maintenance requirements, where an owner can allow a system to self-seed and let nature take its course.
Drainage components of a green roof system should be kept free of vegetation to ensure the integrity of the building will be maintained.
It is also worth noting that some green roof companies provide maintenance as part of their service.