Parental involvement is critical to the successful implementation of green schoolyards. This paper reports results from two surveys that asked a total of 402 parents of children in schools with green and paved schoolyards about their appreciation of the schoolyard, children's behavior in the schoolyard, (dis)advantages of a green schoolyard, and willingness to become involved. Parents from schools with a green, compared to a paved, schoolyard showed higher appreciation of the schoolyard and more often reported that the schoolyard supports varied play and other behaviors. Parents generally saw more advantages than disadvantages of a green schoolyard, and many parents indicated that disadvantages, such as children coming home dirty, are not very important to them. Parents wanted to be involved in designing a green schoolyard and with schoolyard activities. However, they were less willing to help with maintenance, and their time to help is limited.