Mid-stage Pokemon like Roselia rarely see competitive play outside of special formats. It's a waypoint on the road to Roserade, which is where the real potential kicks in. The stat spread leans into special offense. A competitive option since Gen 3.
Roselia's built around special offense. Sp. Atk leads the charge, Defense pays for it. Common in the wild, worth 2 Sp. Atk EVs. Follows a 1.06M XP medium-slow curve.
Roselia shoots sharp thorns as projectiles at any opponent that tries to steal the flowers on its arms. The aroma of this Pokémon brings serenity to living things.
On extremely rare occasions, a Roselia is said to appear with its flowers in unusual colors. The thorns on this Pokémon’s head contain a vicious poison.
Roselia Weakness
VulnerableRoselia's Grass/Poison typing leaves it vulnerable to Fire, Ice, Flying, and Psychic moves. It resists 5 types, giving it decent defensive coverage. Roselia's special bulk (base 80 Sp.Def) helps absorb special-type weaknesses, though physical moves exploit the lower Defense.
Roselia is partway through a three-stage line between Budew and Roserade. The chain involves an evolution item, so it's not a straightforward grind. So far, Sp.Atk got the biggest boost (+50 from Budew). The final form adds another 115 stats on top.
How to Evolve
Breed with Roselia to get Budew eggs easily from the Fairy and Plant egg groups. Notable egg moves include Bullet Seed, Cotton Spore, Extrasensory and 11 more.
Best Build
No build content available for this Pokemon in Gen 6.
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You'll want to breed for Bullet Seed and Cotton Spore on Roselia. These egg moves aren't just nice to have. Combined with STAB from Leaf Storm and Petal Dance, they expand what Roselia can actually threaten in practice.
Level-Up Moves
TM Moves
Egg Moves
Tutor Moves
Reminder Moves
Transfer Moves
This 2-stage line starts with Budew, a baby that doesn't spawn wild. Breed Roselia at the nursery to hatch one, then level through the stages to reach Roselia.
Where To Catch Roselia in Omega Ruby & Alpha Sapphire
To get Roselia, start by catching Budew through walking encounters at Lv. 7-14. The chain covers 1 catchable stage before reaching the final form.
Step 1Breed Budew from RoseliaBreed from Roselia at the Day Care.
Step 2Roselia ✓EFFORTLESSRoute 117Alpha SapphireGrassLv.735%EarlyRouteHorde battleEFFORTLESSRoute 117Omega RubyGrassLv.735%EarlyRouteHorde battleEASYRoute 117Alpha SapphireGrassLv.12-1420%EarlyRouteEASYRoute 117Omega RubyGrassLv.12-1420%EarlyRouteor evolve from Budew (Step 1)
Roselia isn't fully evolved, so it's not built for competitive play. You'll want to evolve it into Roserade to unlock its full potential. At 400 BST, it's a stepping stone rather than a team anchor.
Run Natural Cure on Roselia. It's the ability that defines how you build around it and the main reason it holds a competitive niche. Roselia also gets Poison Point and Leaf Guard, but they don't compare.
Roselia fills the attacker role. It's leaning toward the special side (base 100 Sp. Atk). At base 65 Speed, it won't be moving first often.
Roselia appears in 16 games, including Ruby & Sapphire, FireRed & LeafGreen, and Emerald.
Roselia has been available in 16 games since Ruby & Sapphire, though obtaining it requires an item-based evolution. This extra step makes it less common than Pokemon found through standard wild encounters.
- Gen IY
Yellow - Gen IRB

Red & Blue - Gen IIGS

Gold & Silver - Gen IIC
Crystal - Gen IIIRSDebut

Ruby & Sapphire - Gen IIIFRLG

FireRed & LeafGreen - Gen IIIE
Emerald - Gen IVPt
Platinum - Gen IVHGSS

HeartGold & SoulSilver - Gen IVDP

Diamond & Pearl - Gen VBW

Black & White - Gen VB2W2

Black 2 & White 2 - Gen VIXY

X & Y - Gen VIORAS

Omega Ruby & Alpha Sapphire - Gen VIIUSUM

Ultra Sun & Ultra Moon - Gen VIISM

Sun & Moon - Gen VIILGPE

Let's Go Pikachu & Eevee - Gen VIIISwSh

Sword & Shield - Gen VIIIPLA
Legends: Arceus - Gen VIIIBDSP

Brilliant Diamond & Shining Pearl - Gen IXSV

Scarlet & Violet - Gen IXLZA
Legends: Z-A