Actually yeah, I guess that's right.
Heart of Water (too bad it's personal) and Freedom of Movement. It would be nice if there were lower level spells, but this could be good enough.
I was just thinking about teams of PCs at about lvl 8 or so. You just about can't lose if there are plants around. Also, the enemies generally don't have flying/teleportation just yet.
The PCs use Entangle and Plant Growth on the enemies. Oh no! They're all entangled/slowed/can't move very far at all!
The striker closes in with Freedom of Movement on, and proceeds to slaughter each enemy individually with TWF + duskblade channeling.
The rest of the group flies overhead (or shoots from afar) and performs crowd control, laying down the smackdown as needed.
Any better spells out there? Relatively long duration is good, but not required.