Oddish can evolve into gloom, then it has a choice, with a leaf stone you get a vileplume, with a sun stone you get a Bellossom. Bellossom is pure grass so the only advantage of this is it isnt supper affected by physic anymore, but now it gains weakness to bug and poision and now can actualy can be poisoned. Bellossom is strangly smaller than oddish, and Bellossom has no legs. An oddish is better than a bellossom so it is really unfair on bellossom and doesnt look like a stage 2. Bellossom is crap.. big time.