Alright so the boss just told you to go ahead and find a plant company.
A what? you are thinking...a plant company? Where I am going to find that?
Okay so the easiest thing to do is to start with Google.
"Plant company"....well I didn't mean plant like factory.
Let's try "Office Plants"..... Yeah, we're getting there.
How about "Buy Office Plants Houston"?....... You nailed it! 
HoustonInteriorPlants.com is the most convenient way to buy house plants and office plants in Houston.

Here are the best key words to find a plant service or an indoor plant nursery in your town:

Interior Plants + your city
Office Plants + your city
Buy Indoor, Office, or House Plants + your city

You are guaranteed to find the major players in your town.