I think it's just meant to represent a sovereign who has a better grasp on the process of growing things, rather than a sovereign who delays governing for a little while so he can finish tending his tomato garden that will feed half of the city.
I just can't imagine my giving 15 strenght to my orc sovreign called "Rancor" and then seeing those words every time I look at his description... (Alright being an orc he probably has a green thumb or two!)
