If Withers, the Ruby Sapling, and the Teldrassil Sapling just aren't cutting it in terms of tree pets for you (and how could you not want another tree pet? I'm stumped at the very thought!) then you're in for a treat. Blizzard has just added the Blossoming Ancient to its digital store for $10. The Blossoming Ancient is a miniature version of the great Ancients that protect and guard Azeroth's forests and natural landscapes. If you don't think it's cute enough on its own, get this: it changes with the seasons. You can check out previews of the seasonal forms on the purchase page.
If you haven't yet made the foray into digital pet purchases, now might just be the time to branch out! ... Okay, I just really wanted to make that pun. As with all digital pet and mount purchases, the Blossoming Ancient will be available to all the characters on your account. Take good care of your little Ancient, hero of Azeroth!