Car fumes near orchids?

[astrid]

Originally Posted by Ordphien

Plants on the sides of roads are carefully selected for their extreme tolerance of high pollution levels. It's a huge consideration when landscaping near roads as most plants will enter a slow decline.

Oh, I wasn't aware of that! I will have to read up on that, thanks for the new information!!

I was just giving my best guesses based on logic rather than stating facts. <3