I don't know if this is the right place, but I need to rave about this somewhere...
Oh god, I just found out: Growth raises both offenses two stages under sunlight! Sweet Jesus, Mary and Joseph, this is so much win for the sad weed that plagues UU and NU, it's not even funny! And of course, it is epic win for many a Grass which are actually good but got better.
But ofc, Nintendo had to be a little beech and cheat Exeggutor out of it; it doesn't get Growth, therefore no awesome NastyPlot-esque move under Chlorophyll. Vileplume and Bellossom cannot learn it either, but Venusaur and Victreebel can (yay for Victreebel? with sun support, her Growth is both a Swords Dance and a Nasty Plot, ha!) and Shiftry, Cherrim and Tangrowth also get to abuse this, haha.
Shiftry and Tangrowth, however, will be, hands down, the best users of the move, thanks to Chlorophyll and having good stats in both offenses (100/90 and 100/110 respectively). After one boost, these guys can fire awesome Trickery (Shiftry) and Earthquake (Tangrowth) and [insert grass move here] which is just epic win. I prefer Shiftry for it, however, due to greater speed under sunlight, and the fact that I'll be too busy using Tangrowth defensively (Regeneration for the win) to consider using it offensively. XD
Oh, and Cherrim? Yeah, just get that little girl growing under the Sun and even with its pathetic 60 attack (increased by Flower Gift, remember?) it will be able to do nice damage, but the better part is going to be abusing Weather Ball and [insert grass move here] under sunlight after one use of Growth. My god, she's going to wreak so much havoc if you manage to get her that stat boost under sunlight, seriously. XD Expect even more Groudon + Cherrim and Ninetales + Cherrim combos this generation, folks.
My favourite, Roserade, also gets it, but it's an inferior user of it compared to Shiftry / Cherrim / Tangrowth. XD She has better things to do.