One of the frustrations of cycling on freshly cut grass is the mess the clippings make. Drivetrain and shoes get completely clogged up, especially when it's wet. A huge hassle to clean up later. Even after washing it off shoes, it remains ingrained, stuck in the hooky parts of Velcro straps. To see what I mean, look at the shoe on the left below:
A nice way to remove this grass and vegetation is to brush it out with another piece of Velcro. Use the hooky side of another piece. You can see this "brush" in the photo above: it's the white Velcro sticky dot between the shoes. It works really well, the hooks get right in there, and doesn't really damage the strap as long as you're gentle. The grass on the strap on the right hand shoe has been cleaned using this method, the one on the left is still to be done.
A useful tip I hope.