Yes, You can buy one from the Veilstone Department store. They are mildly priced so save up.
Gloom and Weepinbell.I think there are some more Pokemon that evole with a leaf stone but I forgot....
in Pokemon diamond ,pearl ,and platinum you find them underground other Pokemon games you are most likely to find them on the ground in small poke balls
Exeggcute > leaf stone > Exeggutor
can find one in the team galactic warehouse or head quarters in Veilstone city When you have to free the three Pokemon they captured.
You can get the thunder stone by going underground and digging for it in Pokemon diamond/pearl ( the thunder stone , fire stone, water stone, and the leaf stone is very rare, so good luck!).
Open every item lying around and make good use of your ItemFinder. You can also find them in the underground.
some Pokemon you use a leafstone on are nuzleaf, execute,gloom, and victrebell
yes you can by going to the under ground and mining
use a leaf stone
To evolve Weepingbell into Victrebell, you need to give it a leaf stone.
To evolve Weepingbell into Victrebell, you need to give it a leaf stone.
you have to find a dungeon kecleon shop