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From: Halifax, NS
Region: Canada
Topic: Green Roofs
Title: Best performing species on green roofs
Answered by: Dr. Mark Simmons and Joe Marcus
We wish we could give you a more definitive answer, but it's still a bit too early. Right now we are still analyzing the data. There is considerable variation both among plant types and among roof types (i.e. a plant that does well on one roof type may do poorly on another). Although there are many exceptions, overall, as a guide, the grasses seem to do the best. The list can be found at http://www.wildflower.org/collections/collection.php?collection=greenroof_species
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