Kurt, in Azalea town, can make Apricorns into Pokeballs.
He's in the top left (North-West) house. There's an Apricorn tree next to it, so it's hard to miss.
You need to defeat Team Rocket in Slowpoke's Well before he'll make Pokeballs, though.
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go to the poke`thalon place and next to the big dome is a free place speak to a man dressed as if he was a pokemart person and he gives you an aprishaker (find it in apricorn box)
black apricorns you need to exchange it with Kurt in azeala town in Pokemon soulsilver and heartgold
the guy who gives you the apricorn case is in the house enroute to Pokemon professor, while the guy that makes the pokeballs out of berries is in azalea town.
You cant.You get the apricorn box from some guy at the beginning of the game then the apriblender at the pokeathelon dome.the pokemon web site said you can but . . . . i have not found one
i am sorry i do not no what apricorn it is but you get from Kurt with some apricorn. White apricorn does the trick.