I'm pretty sure it will only effect your own 3.I'm curious on how the interaction between mushrooms from multiple druids will work out. Balance and Resto in the same raid, 6 mushrooms out.... If Balance detonates them, then will all 6 actually blow up and will the 3 from the Resto druid get the bonus from Solar eclipse? If Resto blooms them, same deal? Do all 6 bloom, are the all effected by the Resto talents/bonuses? Finally, do you have to be in ToL or Moonkin to place the shrooms, or just be spec'd resto/balance?
Wild Mushroom - 10.3% of Base Mana, 40 yd range Instant, Can be cast in Tree of Life Form, Moonkin Form
Grow a magical Mushroom with 5 Health at the target location. After 6 sec, the Mushroom will become invisible. Other Wild Mushroom abilities can target these mushrooms for additional effects. Only 3 Mushrooms can be placed at one time.
Wild Mushroom: Detonate - 40 yd range, Instant, 10 sec cooldown
Detonates all of your Wild Mushrooms, dealing 292 to 354 Nature damage to all nearby targets within 6 yards, and creating a Fungal Growth in each mushroom's wake covering an area within 8 yards, slowing all enemy targets by 50%, and lasting 20 sec.
Wild Mushroom: Bloom - 40 yd range, Instant, 10 sec cooldown
Causes all of your Wild Mushrooms to bloom, healing all allies within 6 yards for 4264 to 5159.