Time on Frog Island

The bounce mushrooms are the bounce pads you grow by planting the speckled mushrooms in dirt plots. There are 15 bounce mushrooms total, but 2 will already be grown from the start of the game. There will be at least one on each island so you'll need to have the Lumberjack's questline done up to at least where he builds the Western bridge for you (see One with the frogs ). You need to grow all 13 on the same save to get the trophy.

The location of the remaining 13 are as follows (there is also a video guide for this down at the bottom):

Bounce Mushroom #1

• Just West of your starting campfire and the painter's house will be a high ledge where you will first find the Cartographer. The mushroom is on this ledge (this one shows what the dirt plot looks like versus the actual bounce mushroom).
  

Bounce Mushroom #2

• Just South of the previous mushroom, down on a lower enclosed section.
  

Bounce Mushroom #3

• Just to the left of the Farm, along the river coastline going North, will be the next mushroom.
  

Bounce Mushroom #4

• Just East of the farm will be a small island surrounded by a pond filled with lilypads. The island has red and green apple trees, just as a further reference. The next mushroom is also on this island.
  

Bounce Mushrooms #5-8

• On the Eastern Island, near the Southern coast, is a tall rock with 4 mushroom plots surrounding it. This is the tall rock you need to get one of the Frog Statues off of for No Evil .
  

Bounce Mushroom #9

• Back on the Main Island, make your way up the Norther Mountain, and just near the start of the green hill (before the bridge leading to the green fuzzy guy) will be a mushroom on the right side.
  

Bounce Mushroom #10

• This is on a tall rock just below where the large Buddha-like Frog Statue is. 
  

Bounce Mushrooms #11-12

• On the Western Island, go North of the inlet of water in the middle of the area and there will be two mushrooms on a rock wall. This rock wall is in the same one where you'll end your time trial for Sailor Swift .
  

Bounce Mushroom #13

• Back on the Main Island, go South from the Western bridge and just North of the Fisherman's house will the final Mushroom.