As with everyone, I suspect, getting the spores right was our biggest issue. An unnecessary run from the melee pack nearly cost us the final attempt, and some sluggish DPS movement wiped us the try before.
But actually – I kinda enjoyed the fight. Trees seem well-suited to being in the melee pack, as Wild Growth really comes into its own in that situation. Co-ordinating the healing when one of the tanks reached 7 or 8 stacks of Gastric Bloat was the trick, though, making sure I was rolling HoTs on the tank about to taunt as well as Nourishing the existing tank.
Good fun. Here's the team. Makes me sad I'll probably miss next week's raid.