I use a dedicated druid healer, he has a castsequence setup similar to what jimbobobb said, except it's just the 3 hots. rejuv, followed by regrowth (since by then the tank has taken some damage) followed by lifebloom etc etc. Reset= is set to the time rejuv takes to run out.

Group heal - I have a simple macro bound to a key to target self, cast wild growth (and added rejuv + lifebloom to it so if i'm mashing it it adds a hot ot the tree too) reset= set to time it takes for wild growth to be up again
oh $hit button- castsequence of swiftmend on tank, natures swiftness + healing touch.

I usemouse repeater and grid+clique for spot healing and top ups, Vuhdo is the same sorta thing, easier to setup. I don't heal much via this method except in healing intensive fights. There are guides on isboxer about setting up the mouse repeating healing regions etc and there is heaps of info on here too.