Doing something that's ecologically-friendly doesn't have to cost more than it's worth.
The Port Authority's Ohio Native Meadow is one outstanding example. Inspired by Dawes Arboretum and a setting at The Wilds, we converted a one acre section of lawn north of one of our industrial buildings to a meadow in 2012.
The seed cost some money and the time to till and plant it was an expense.
We don't have to mow it, though, and nature provides the setting that construction didn't have to provide. In time, these will pay off and our green investment will be in the black.
I typed this blog while sitting among the Ohio-native plantings that, just a short 18 months into the experiment, have already brought wildlife with them.