Voronoi grid blend into soft edge

Hey everyone. I'm working on an urban project and wanting to use a voronoi grid to design the road grid. but want the grid to meet up with a green area on the site. when it meets with the green space to create an edge condition. But would like the voronoi to blend across the green space to meet the other areas. The goal is to have the hard edge road grid blend throught the green space to create soft curving walking paths. Sorta like the horrible sketch below (orange lines being the hard edge condition to the green area and the green as soft curves connecting across). Thank you!