There are two ways to evolve a Gloom, you can either evolve it into Vileplume or you can evolve it into Bellossom. To get Vileplume all you need to do is use a leaf stone on it. Likewise to get Bellossom you have to use a stone on Gloom, but this time it is a Sun Stone.
Gloom doesn't evolve into Bellossom by leveling up. Use a Leaf Stone and TADA! A Bellossom! : )
Gloom will evolve to Bellossom, and Sunkern will evolve into Sunflora using a Sun Stone.
In SoulSilver, Oddish will evolve into Gloom at Level 21 however Gloom can evolve 2 different ways, you can use a Leaf Stone on it in order for it to evolve into Vileplume or you can use a Sun Stone on it in order for it to evolve into Bellossom.
Sunkern evolves into Sunflora and Gloom evolves into Bellossum.
Sunkern -> Sunflora Gloom -> Bellossom
you have to use a leaf stone on gloom or you can get a bellosom with a sunstone used on gloom.
There are two ways to evolve a Gloom, you can either evolve it into Vileplume or you can evolve it into Bellossom. To get Vileplume all you need to do is use a leaf stone on it. Likewise to get Bellossom you have to use a stone on Gloom, but this time it is a Sun Stone.
Using the Sun Stone, Sunkern evolves into Sunflora and Gloom evolves into Bellossum.
They evolve certain Pokemon. For example, you can use a Sun Stone on a Gloom to evolve it into a Bellossom.
You can use it either on gloom or sunkern both will evolve to a new pokemon, Gloom will become bellossom while sunkern becomes sunflora.
Gloom doesn't evolve into Bellossom by leveling up. Use a Leaf Stone and TADA! A Bellossom! : )
Gloom will evolve to Bellossom, and Sunkern will evolve into Sunflora using a Sun Stone.
If you use a sunstone on a Gloom it will evolve into Bellossom, but if you use a leaf stone on a Gloom it evolves into Vileplume. I added some links incase you want info on these pokemon :)
In SoulSilver, Oddish will evolve into Gloom at Level 21 however Gloom can evolve 2 different ways, you can use a Leaf Stone on it in order for it to evolve into Vileplume or you can use a Sun Stone on it in order for it to evolve into Bellossom.
In Pokemon Diamond, Pearl, and Platinum, Gloom, Weepinbell, Exeggcute, and Nuzleaf all evolve from using the Leaf Stone.
Very few Pokemon evolve with the use of a Stone. However, there are two Pokemon that evolve using this item-- Gloom and Sunkern. Gloom can be caught at Routes 224, 229, and 230. Sunkern can be caught in the Nothern part of Route 204 with a Poke Radar.