In Pokemon HeartGold , there's no such thing as a fertilizer, it's just you going to the flower shop and you talking to the girl who's looking at the flowers and talk to her and her giving you mulch. When you go back to the berry pots click on them and it says fertilizer and when you click it will work because you have mulch and click on the mulch and it will do something to the berries.
Fertilizer can be found in the flower shop in goldenrod city, johto region.
Hope I helped!
no yo can't find it you have to trade it off another Pokemon game.
black stone
you can get it by getting a pichichu in pearl trade it to heartgold
In Pokemon Heartgold or gold and soulsilver or silver you can find it in viridian forest.
Aura Beam is in Pokemon HeartGold.
You can't find registeel in Pokemon HeartGold.
You can find it in Pokemon Platinum, Pokemon Crystal, Pokemon HeartGold, and Pokemon SoulSilver.
unkowns {pokemon}
You cannot find Latios in Pokemon HeartGold unless you went on wi-fi and got the Enigma Stone
You can't
yes
Just find them!
You can't
trade
You can't do it.
There is no such thing.
Find and then catch