Nowhere. Bullet Seed wasn't introduced until the 3rd generation games (Ruby/Sapphire/Emerald).
i don't think bullet seed was back then.
Mt.moon
In Pokemon Crystal.
What the hell is a Pokemon crystal
On the route directly below Rustboro City there is a boy standing next to a berry patch talk to him he is right in front of the berry department
i don't think bullet seed was back then.
oddish
Mt.moon
leaf blade,solar beam,bullet seed,quick attack,pound,
near the berry store there is a man talk to him and he will give you TM bullet seed
theres a few vacuum wave is good at the beginning but bullet seed is a good one.
I preference pokemon crystal
just go to http://www.upokecenter.com/games/dungeon/guides/wondermail.php
There is no HM08 in Pokemon Crystal. Pokemon Crystal has only 7 HMs that are available to use.
Bullet Seed is not a physical attack it is a special attack. Here is an easy way to determine what's physical and special:Each pokemon type in all the games through Generation III (like Emerald) are automatically assigned the role of being a physical trait or special trait let me explain further with the list of types and what trait is given to each:PhysicalNormalBugRockGroundGhostPoison*SteelFightingFlyingSpecialPsychicWaterFireGrass*DarkDragonIceElectric*The Steel and Dark types are not present in Generation I (Red, Blue, Yellow) they were introduced in Generation II (Gold,Silver,Crystal).So to determine what moves are physical or special check its type so in this case for Bullet Seed it is a Grass type move therefore it's a Special Attack.Remember the pokemon's Attack and Special Attack determine the overall power of Physical and Special Attacks.
TM 09 is bullet seed
You have to find/buy the TM Bullet Seed and teach it to the Treecko...