Guild Wars 2

i kill the treasure mushroom and no event reward.i can kill this only 1/day? ty

Yes, they only give you bonus rewards once a day.

Boysenberry.1869:

Yes, they only give you bonus rewards once a day*.

*per map.

It’s possible to get up to 4 invisible mushroom spores in a day by killing a treasure mushroom in each map. (I’m unsure about where and when treasure mushrooms appear in Tangled Depths)