Green Druid - Which roots to use?

[Nagoya]

LEVEL 5-23 Grasping Roots (always).
LEVEL 24-38 Grasping Roots (almost always), can sometimes use Ensnaring Roots for Root Rotting.
LEVEL 39-48 Grasping Roots (most of the time). Envelopping Roots (Root Rotting, Group where mana is not an issue)
LEVEL 49-55 Grasping Roots (most of the time). Engulfing Roots (Root Rotting). Envelopping Roots (Group where mana is not an issue).

lvl 56+ guess
LEVEL 56-59 Engorging Roots (always).
LEVEL 60 Engorging Roots (almost always), can sometimes use Entraping Roots for AoE CC or multi-target Root Rotting.

long story short, you're gonna have grasping roots up on your spellbar pretty much all the time forever.