Since you have specced Revitalize, you will not have any manaissues in combat. Change your meta to Powerful Earthsiege Diamond for some extra stamina + the 10% less stunduration. Other than that gear/gems looks fine I guess, I am using a bit more haste for an extra Wild Growth/Efflorescence-tick, but it's up to you!
If I were you I would remove the 2 points in Blessing of the Grove and put them in Malfurion's Gift instead. Tranquility is a great CD, and to get it from 8 minutes to 3 minutes is pretty huge. Other than that, when lifebloom ticks it also has a chance to make your next cast to cost no mana. So while you're in treeform you can just put one lifebloom at everybody that's close to you, and that will proc almost every global you have and you will be able to spam Regrowth without any mana being drained. For the rest of the spec, it's really up to you. I am using 2 points in both Efflorescence and Living Seed because that is working about good for me.
I would also change Primeglyph from Glyph of Rejuvenation to Glyph of Lifebloom. Lifebloom is keyhealing on singletarget, which makes an extra 10% crit really good. It is not just the HoT that has its critchance increased by 10%, also the bloom which heals for ~13k w/o wound/mortal strike/wv.
Major glyphs, well you don't have any yet from what I can see. I am using Glyph of Barkskin and Glyph of Entangling Roots. Glyph of Barkskin is a must during silences/stuns or if you just have a lot of people on you. Might take a while for you to learn how to use barkskin properly. But it's all up to counter your opponents CD's. For example, barkskin has a 1 minute cooldown, shadowdance has a 1 minute cooldown. Simply counter his dance with barkskin. If you are heavily resiliencegeared the rogue won't be able to kill you until he has dance up anyway. (Key to fuck up rogues is to just keep faerie fire up) If he cloaks and vanishes off, its oke. Just counter his clos/vanish with Nature's Grasp and he'll be stuck in root. And my other glyph, Entangling roots. Ye, I don't know. I've been thinking of using Faerie Fire instead and I have been going back and forth between those two. It's up to you.
Almost forgot, here you have a link for some hastebreakpoints if you'd like:
Druid Haste Rating Breakpoints
I'll be online the whole evening I think, so if you have any further questions or if there is something that I've missed, just ask them in this thread
I am Jicz btw, so if you'd like to check my armory
http://eu.battle.net/wow/en/character/stormscale/Jicz/simple