Does restraining evolution have a negative effect on stats once evolution finally occurs?

I’m wanting to hold off on evolving a Shroomish into a Breloom so it can learn Spore. However, I am wary of the possibility of it missing out on stat gains it would have in its evolved form if I was to evolve it as soon as possible (i.e, gaining more attack per level up due to Breloom having much higher attack than Shroomish.)

I was hoping to confirm if holding off on evolution permanently affects stats or if its like Effort Values and nothing changes regardless of level.

Pleaselog inorregisterto add a comment.

No, waiting to evolve will not effect the stats in the long run. I had the same dilemma myself when training a Breloom some time ago. I decided to hold off on evolving to get Spore and by the time my Breloom reached level 50, it had the same stats as a level 50 Breloom with the same EVs on Showdown! would have.

My findings were also verified by multiple sources on the Internet, includingthisone.

Upon evolution, a Pokemon’s stats are recalculated, based on the updated base stats, evs etc. There are no negative effects holding back evolution, apart from the possibility some moves may take longer to learn.