Funny, I'm planning on evolving my Oddish on Emerald into this... Name's Friendweed.
Anyways, Bellossom is one of those "What is this?" Pokemon that has wierd stats for something so miniscule, and the stats aren't so good anyway. In OU it has little chance to shine too, but there's a couple sets that it can pull off either in or out.
Notes: Always use Chlorophyll. doubling 50 Base speed in sunlight is pretty stupid, but it brings it on-par with some other Pokemon. Plus, Bellossom is probably the only Pokemon I remember off the bat to be able to use Weather moves pretty easily now. So yeah.
SweepySunnyBeamer
Bellossom
Ability: Chlorophyll
Item: Life Orb
Nature: Timid
EVs: 4 HP, 252 SAtk, 252 Spd
-Sunny Day
-Solarbeam
-Hidden Power(Rock/Fire)
-Leaf Storm/Grass Knot
Your basic Sweepy. I'll post the other few viable sets after Church, so I'll just leave it as this right now.
(Did I just say viable? Ahaha.)
EDIT: Alright, back on computer now and gonna post these next few.
Double Powder
Bellossom
Ability: Chlorophyll
Item: Leftovers
Nature: Bold
EVs: 252 HP, 4 Def, 252 Spd
-Sleep Powder
-Stun Spore
-Giga Drain
-Hidden Power (Fire/Rock)
Double Powder. In case you don't know, Double Powder is the strategy with two statuses. One is Sleep, which tends to cause switches, and the other is Paralysis, for major Hax and support. Just explained Sleep Powder and Stun Spore, too. Giga Drain is reliable healing and STAB, while Hidden Power Rock or Fire is your preffered, but keep in mind Fire and Dragon-types will get in your way if youi choose Fire, and Steels will get in your way if you choose Rock. HPGround is an alternative, but with Air Balloon popping up everywhere(No pun intended), you'd need to use it sparingly, at least at first. Oh, and you'd want to Status them, anyway.
SPECIFIC NOTE: I feel like Bellossom could get underestimated, they send in Exca, and you Sleep as they set up. That would be awesome, and they lost one of their more powerful sweepers... Mhmhmhm...
BulkySunnyBeamer
Bellossom
Ability: Chlorophyll
Item: Leftovers
Nature: Modest
EVs: 252 HP, 4 Def, 252 SAtk
-Sunny Day
-Solarbeam
-Giga Drain/Hidden Power (Fire/Rock)
-Moonlight
This is a variant that you might see, not sure. The goal here is not to sweep, more to punch holes and support. Tank-like. Funny, never thought some flower would be talked about like I am. Sunny Day is for Sunlight, as it's MUCH easier to use it as they change the weather. Solarbeam their TTar or Politoed, it'd be so funny. Or you could use HPFire or Rock, again. Moonlight is another form of recovery, so Giga Drain could be dropped for something else, like.... Grass Knot? I don't know.
Physical Flower
Bellossom
Ability: Chlorophyll
Item: Life Orb/Choice Scarf/Choice Band
Nature: Adamant/Lonely
EVs: 4 HP, 252 Atk, 252 Spd OR 252 Atk, 4 SAtk, 252 Spd
-Swords Dance/Return/Leaf Storm
-Seed Bomb
-Drain Punch
-Nature Power (EQ)
Wow. I find it hilarious. A flower that dances with swords and steals your energy with it's punches, sets off an earthquake and throws seeds at you. LO if you want to boost power, Scarf for more speed or Band for extra power righht off the bat. I'd go with SD and LO, but that's just me. Oh, and you'd need to run Return for the Choice'd sets. OR you could run a Lonely nature and go for more powerful Leaf Storm, but I'd need to know what it's power VS the likes of Seed M=Bomb would be to make that call. Speaking of Seed Bomb, it's your main Physical STAB, beating Leaf Blade for those who want a ninja flower. Drain Punch is your really only other physical option, but it's actually pretty good, and if you don't die it replenishes health. Nature Power turns into EQ, which while having redundant coverage with Drain Punch, can be useful at times.
Also, notice it gets Gastro Acid from Pt/HG/SS move tutor. Ewwyugh.
