So getting this pet will either be a lot of fun, or horribly frustrating, depending on how much you like Tower Defense games, lol. The quest is in Hillsbrad Foothills at the Sludgeguard Tower (34, 51) and you must be at least level 20 to get it. Brazie the Botanist gives 5 quests (with some of the best quest names out there), but the first three are just basically learning how to play, so they don’t really get challenging until the last two.
Once you accept the quests, you will see a little field. The zombies come from the right, and you right click to pick up the orbs of sunshine that fall all over the field. The orbs of sunshine drop more often depending on how many Sunflowers you have planted. I had the best luck planting two full rows of Sunflowers (#1) and just throwing a Spitter (#2) out now and again while I got them all out. Once you have enough solar power to work with, it’s just all about responding to where the biggest groups of zombies are. The quests take a bit of luck and you will likely fail a couple times (I did) but eventually it will just click and you’ll start kicking zombie butt! If you see one of the big guys, or you’re getting overwhelmed, don’t be afraid to drop those Pumpkin Bombs (#6)! They take a lot of solar power, but if you have the two rows of sunflowers, you should be fine!
For the last quest you have to defeat Warden Stillwater. I used the same strategy to kill him as I did to defeat the previous waves, except that I used Pumpkin Bombs every time they were available. Just watch out, as he can wipe out your Sunflowers and you’ll need to re-plant them!
Good luck, and if you know of any other pets that have become available since The Shattering through quests or other means, please leave a comment and let me know! Pets are one of my favorite parts of WoW, hehe.