I am looking for landscape ideas for the edge of a parking lot.
A friend of mine is building a larger new restaurant on the site of an old restaurant and neighbors are using the department of making you sad to make make this project difficult and needlessly expensive.
One of their arguments is the concern of water run off from the parking lot. The area gets 4 to 6 feet of snow every winter and sometimes up to 10 feet of snow. Salt, sand and lots of plowing will be used to keep the ice off the parking lot. Piles of snow will sit for months on the edges of the parking till it melts in the spring.
The location is on a state highway in southern NH. The climate is cool and wet USDA Zone 5 with a southern exposure. The soil is slightly acidic. The area around the parking lot is forest with white pine, birch, and maples mix. The site is on bedrock and slops down hill on the behind it. There are residential homes at the bottom of the hill.
I am hoping to find plants that would capture the oils, salt and other other toxic stuff that may flow off the parking lot to the woods from melting snow. The plans already have take care of the main drainage issues per local codes so I am looking for a functional landscaping.
Nothing soaks up crud like cattail, but I'm not sure how it would do with the salt. Common Reed might do better. Maybe a nice wide swale with some marsh plants at the edge of the parking lot? Or will it not be wet enough for wetland species?
Here are a couple documents about native wetland and salt marsh plants: