Have ruby or emerald or another sapphire trade you a Pokemon holding the sun stone they received or get one from firered or leafgreen.
Oddish evolves into Bellossom when exposed to a Sun Stone.
Well there is only about 3 Pokemon that evolve with the sun stone and 2 in Pokemon sapphire gloom and sunkern which turn into bellossom and sunflora.
The sun stone is given to you by a guy in the mossdeep city space center he will be sitting near the entrance.
Gloom can be evolved from a sun stone into a Bellosem. Remember, the stinkier the Gloom, the more pretty the Bellosem.
The Sun Stone can be acquired at the Space Center in Mossdeep City. Speak to the old guy on the first floor.
Cathch a GLOOM then give it a leaf stone. For a bellosum give it a sun stone.
You get the pokemon bellosom from using a sun stone on gloom
In Mosdeep City, inside the Space Centre, there is a man who will give you a Sun Stone. They can also be held by wild Solrocks.
Gloom into Bellossom & Sunkern into Sunflora
Moon Stone can be found in Meteor Falls, you must get HM07 (Waterfall) before you can get it. :)
Go inside the Mosdeep Space Centre and talk to the sailor guy and he'll give you a sun stone. Use the sun stone on a Gloom.
Get a sun stone for your gloom and it will evolve to a bellossom. Obtain the sun stone from the scientist in the space centre in mossdeep city.Goood Luck! :DD