Green Thumbs

"The Green Thumbs" is the commonly used title for members of the Order of Free Gardeners. The Order of Free Gardeners is a secret society that was founded in Draigenmore between 350-450 A.D. and later spread to Breland, Northland, Lilandi, Solasta, and even Thule. Their name comes from their origin as a guild for landscapers and gardeners working within the castles of the leaders of the world, where they had access to much secret information.
The Motto of the Green Thumbs is that they "Reap and Sow Information and Truth." They have become a large, intricate secret society of spies and an efficient information network.  They operate in a mysterious matter befitting to their function.  Each agent is run by a Control and that is their only contact.  The controllers are at times very hands on while for other periods, they may not speak to or debrief their agents for long stretches.  And then, of course, each Controller may have their own Control, and on and on. 
Even the Kings and Queens of the various Kingdoms, who have means of contacting the Green Thumbs, know only of their one, single contact.
Overall the mission of the Green Thumbs seems to be one of good and is independent of any one Kingdom's influences.  
Their members often have a small, iron pin in the shape of a spade that can be worn as a symbol to other members of the order.