From Bulbapedia, the community-driven Pokémon encyclopedia.

Synthesis (Japanese: こうごうせい Photosynthesis) is a non-damaging Grass-type move introduced in Generation II.

Effect

Generation II

Synthesis restores the user's current HP based on the weather and time of day. In morning and night, during no weather it restores ¼ total HP, during harsh sunlight it restores ½ total HP, and during other weather it restores ⅛ total HP, rounded down. Except in link battles, the move restores twice as much HP during the daytime.

Generation III onwards

Synthesis restores the user's current HP based on the weather in the battle. During no weather or during strong winds, it restores ½ total HP, during harsh sunlight, it restores ⅔ total HP, and during other weather, it restores ¼ total HP, rounded down.

Synthesis can be used as the second move of a Pokémon Contest combination, with the user gaining 1 bonus appeal point if Sunny Day was used in the previous turn. It is also part of a Contest Spectacular combination and will give an extra three appeal points if the move Sunny Day was used in the prior turn.

If powered up by a Grassium Z into Z-Synthesis, all of the user's lowered stats are reset.

Description

Games Description
Stad2 Allows HP to be restored by the sunlight. In battle, half the user's max HP is restored.
GSC Restores HP (varies by time).
RSEColoXD Restores HP. The amount varies with the weather.
FRLG Restores the user's HP. The amount of HP regained varies with the weather.
DPPtHGSSPBR
BWB2W2
XYORAS
SMUSUMPE
SwShBDSPLA
SV
The user restores its own HP. The amount of HP regained varies with the weather.

Learnset

By leveling up

# Pokémon Types Egg Groups Level
II III IV V VI VII VIII IX
0001 Bulbasaur GrassIC Big.png
PoisonIC Big.png
Monster Grass 39 39 33 33 33 33 27 27 27
0002 Ivysaur GrassIC Big.png
PoisonIC Big.png
Monster Grass 47 47 39 39 39 39 35 35 35
0003 Venusaur GrassIC Big.png
PoisonIC Big.png
Monster Grass 53 53 45 45 45 45 37 37 37
0102 Exeggcute GrassIC Big.png
PsychicIC Big.png
Grass 25 25 25
0103 Exeggutor GrassIC Big.png
PsychicIC Big.png
Grass 1 1 1
0103 Exeggutor GrassIC Big.png
DragonIC Big.png
Grass 1 1
0152 Chikorita GrassIC Big.png Monster Grass 22 22 12 12 12 12 12 12
0153 Bayleef GrassIC Big.png Monster Grass 23 23 12 12 12 12 12 12
0154 Meganium GrassIC Big.png Monster Grass 23 23 12 12 12 12 12 12
0187 Hoppip GrassIC Big.png
FlyingIC Big.png
Fairy Grass 1GS
5C
5 4 4 4 4 4 15
0188 Skiploom GrassIC Big.png
FlyingIC Big.png
Fairy Grass 1GS
1, 5C
1, 5 1, 4 1, 4 1, 4 1, 4 1, 4 1
0189 Jumpluff GrassIC Big.png
FlyingIC Big.png
Fairy Grass 1GS
1, 5C
1, 5 1, 4 1, 4 1, 4 1, 4 1, 4 1
0191 Sunkern GrassIC Big.png Grass 31 37 33 33BW
28B2W2
28 28 28 28
0192 Sunflora GrassIC Big.png Grass 1
0273 Seedot GrassIC Big.png Field Grass 21 21 21 21 21 27 27 27
0274 Nuzleaf GrassIC Big.png
DarkIC Big.png
Field Grass 1 1 30
0275 Shiftry GrassIC Big.png
DarkIC Big.png
Field Grass 1 1 Rem.
0315 Roselia GrassIC Big.png
PoisonIC Big.png
Fairy Grass 57 46 46 46 46 35 35
0357 Tropius GrassIC Big.png
FlyingIC Big.png
Monster Grass 47 41 41 41XY
50ORAS
50 50 50
0387 Turtwig GrassIC Big.png Monster Grass 33 33 33 33 33 33
0388 Grotle GrassIC Big.png Monster Grass 37 37 37 37 37 37
0389 Torterra GrassIC Big.png
GroundIC Big.png
Monster Grass 39 39 39 39 39 39
0407 Roserade GrassIC Big.png
PoisonIC Big.png
Fairy Grass 1 1
0470 Leafeon GrassIC Big.png Field 29 29BW
33B2W2
33 33 30 30 30
0492 Shaymin GrassIC Big.png No Eggs Discovered 28 28 28 28 28 28
0548 Petilil GrassIC Big.png Grass 17 17 17 33 33
0549 Lilligant GrassIC Big.png Grass 1 1 1 1 1
0549 Lilligant GrassIC Big.png
FightingIC Big.png
Grass 1
0556 Maractus GrassIC Big.png Grass 15 15 15 32
0590 Foongus GrassIC Big.png
PoisonIC Big.png
Grass 35 35 35 16 16
0591 Amoonguss GrassIC Big.png
PoisonIC Big.png
Grass 35 35 35 16 16
0640 Virizion GrassIC Big.png
FightingIC Big.png
No Eggs Discovered 42
0669 Flabébé FairyIC Big.png Fairy 33
0670 Floette FairyIC Big.png Fairy 38
0671 Florges FairyIC Big.png Fairy 1
0672 Skiddo GrassIC Big.png Field 20 20 20
0673 Gogoat GrassIC Big.png Field 20 20 20
0722 Rowlet GrassIC Big.png
FlyingIC Big.png
Flying 25 18 18
0723 Dartrix GrassIC Big.png
FlyingIC Big.png
Flying 28 20 20
0724 Decidueye GrassIC Big.png
GhostIC Big.png
Flying 28 20 20
0724 Decidueye GrassIC Big.png
FightingIC Big.png
Flying 20
0753 Fomantis GrassIC Big.png Grass 28 35 35
0754 Lurantis GrassIC Big.png Grass 28 37 37
0764 Comfey FairyIC Big.png Grass 28 18 18
0798 Kartana GrassIC Big.png
SteelIC Big.png
No Eggs Discovered 19 40
0829 Gossifleur GrassIC Big.png Grass 24
0830 Eldegoss GrassIC Big.png Grass 28
0893 Zarude DarkIC Big.png
GrassIC Big.png
No Eggs Discovered 66 66
0986 Brute Bonnet GrassIC Big.png
DarkIC Big.png
No Eggs Discovered 21
1017 Ogerpon GrassIC Big.png No Eggs Discovered 42
Bold indicates a Pokémon gains STAB from this move.
Italics indicates a Pokémon whose evolution or alternate form receives STAB from this move.
A dash (−) indicates a Pokémon cannot learn the move by the designated method.
An empty cell indicates a Pokémon that is unavailable in that game/generation.

By breeding

By Move Tutor

Special move

Generation IV

# Pokémon Types Egg Groups Obtained with
0151 Mew PsychicIC Big.png No Eggs Discovered My Pokémon Ranch - Hayley's Mew
Bold indicates a Pokémon gains STAB from this move.
Italics indicates a Pokémon whose evolution or alternate form receives STAB from this move.
A dash (−) indicates a Pokémon cannot learn the move by the designated method.
An empty cell indicates a Pokémon that is unavailable in that game/generation.

Generation V

Generation IX

# Pokémon Types Egg Groups Obtained with
0763 Tsareena GrassIC Big.png Grass Wild Tera Pokémon - Socarrat TrailSV
Bold indicates a Pokémon gains STAB from this move.
Italics indicates a Pokémon whose evolution or alternate form receives STAB from this move.
A dash (−) indicates a Pokémon cannot learn the move by the designated method.
An empty cell indicates a Pokémon that is unavailable in that game/generation.

By event

Generation II

Generation V

# Pokémon Types Egg Groups Obtained with
0495 Snivy GrassIC Big.png Field Grass Pokémon Center Tohoku Snivy
Bold indicates a Pokémon gains STAB from this move.
Italics indicates a Pokémon whose evolution or alternate form receives STAB from this move.
A dash (−) indicates a Pokémon cannot learn the move by the designated method.
An empty cell indicates a Pokémon that is unavailable in that game/generation.

In other games

Pokémon Mystery Dungeon series

050Diglett.png This section is incomplete.
Please feel free to edit this section to add missing information and complete it.
Reason: DX and effects in Extremely Harsh Sunlight, Heavy Rain, Strong Winds

Synthesis restores HP to the user. Prior to Gates to Infinity, Synthesis would heal a set amount of HP. From Gates to Infinity onward, Synthesis heals HP as a percentage of the user's max HP.

Pokémon Rumble Rush

In Pokémon Rumble Rush, all status moves including Synthesis could only be used by opposing Pokémon and could not be obtained on any caught Pokémon. Synthesis could be seen as a move used by Boss Lilligant.

GrassIC RR.pngSynthesis
Charge time 1.5 seconds
Range type Circular (ranged)
Target Self
Additional effect Restores HP

Pokémon Masters EX

Pokémon UNITE

In Pokémon UNITE, Synthesis is Eldegoss's second move. The user uses sunlight to heal itself and nearby allies. At level 6, this move is replaced by either Cotton Guard or Cotton Spore.

Description

Games Description
MDRB Restores the user's HP. The amount of HP regained depends on the weather.
MDTDS Restores the user's HP. The HP amount regained depends on the weather.
BSL じぶんの HPをかいふくする そのときの てんきによって HPのかいふくりょうが かわる
MDGtI It restores your HP by half of your max HP. During a Sunny condition, it restores your HP even more. During a Rain, Hail, or Sandstorm condition, the amount regained goes down.
SMD It restores your HP. If it's sunny or in harsh sunlight, it restores your HP even more. During rain, heavy rain, hail, or a sandstorm, the amount regained goes down.

In the anime

In the manga

Pokémon Adventures

Erika Skiploom Synthesis Adventures.png
Skiploom
The user absorbs energy from the sunlight, healing its injuries.
Pokémon Method
User First Chapter Used In Notes
Skiploom Skiploom absorbs energy from the sunlight, healing its injuries.
Erika's Skiploom Bringing up Bellossom Debut

Pokémon Gold & Silver: The Golden Boys

Gold Bayleef Synthesis Golden Boys.png
Bayleef
The user restores its own stamina through photosynthesis.
Pokémon Method
User First Chapter Used In Notes
Bayleef Bayleef restores its stamina by using the energy from the sun.
Gold's Bayleef Get up Again, Bayleef Debut

In other generations

Core series games

Side series games

Spin-off series games

In other languages