Thanks for your feedback!
Mushroom works by it is own) you just need to be on top of it when it grown and *POOF* you pushed in the air)
I intentionally dint use "hold to jump higher" mechanic because i'm afraid of overwhelming player. I already have two kinds of "reach higher ground" mechanics (mushroom and pumpkin) and decided - it will be enough for this project) But it definitely a ground for further work on gameplay.
i'm glad you like to play it)