Well, old thread, and not sure if the OP has moved on or anything.. I'd be interested to see whats happenening now..
Thought I'd append some experience as I run a Tree Druid as my main, now in ICC 25 I levelled as Balance and went resto at 78. Geared up in heroics and raids.
You can check out Narashima on Earthen Ring EU (Fear and Loathing guild) on the eu armoury.
Narashima As you'll see, my bonus heal is 2403 (Goes up a bit in tree, ofc) and total with raid buff is approaching 3000.
So, the OP seems to be ok in terms of heal at the last posting, so I'll just say what I do.
Prime heal, is Rejuve.. yep, that old one no one likes. It enables Swiftmend and more importantly, buffs up Nourish. I very rarely load up my tank with REJ, RG, LB etc. Lifebloom used to be the staple heal, but glyphed rejuve now works better given it's other features.
Rapid Rejuvenation This makes your haste affect rejuve ticks. With enough haste, your rejuve ticks as fast as lifebloom.
So, generally, once your tank gets initial aggro, Slap on Rejuve, possibly Swiftmend immediately if he took significant damage on the initial hit.
From then on, nourish and refresh rejuve as necessary.
This has worked for me since I was 80 gearing in random heroics.
On a recent random heroic (Still need frost emblems) the tank was not particularly well geared. That was exciting, with everyone including me, managing to pull aggro at various times.
As someoe noted previously, Wild growth on the tanks target is really efficient, though theoretically, if you WG the tank it should have the same effect.
One point, set the tank as your FOCUS trarget. makes it easy to re-target if necesary.
Also, get Vuh'Do. it offers a lot more features than Healbot. I could never get on with Grid/Clique.
Well, thats all from me..
Cheers,
Bazz