Pokémon Brilliant Diamond and Shining Pearl Eterna City Gym: How to Beat and Rematch Gardenia

A Pokémon Trainer standing beside Gardenia of Eterna City Gym in Pokémon Brilliant Diamond and Shining Pearl.

A Pokémon Trainer standing beside Gardenia of Eterna City Gym in Pokémon Brilliant Diamond and Shining Pearl.

During your time playing Pokémon Brilliant Diamond and Shining Pearl, you'll have to face eight gyms, the Elite Four, and the Champion before you can become the Sinnoh Champion yourself. After this, all eight gyms will be available for a rematch, too! The second of the gyms is Eterna City, which has Gardenia, a master of grass-types, as its leader.

In this guide, we explain how to beat Gardenia of Eterna City Gym, and how to later beat her in a rematch.

Read More: Pokémon Brilliant Diamond and Shining Pearl Hidden Moves: How To Get Cut, Fly, Defog, and More

How To Beat Eterna City Gym and Gardenia

The locations of all four Pokémon Trainers a player needs to battle with before being able to battle Gardenia of Eterna City Gym in Pokémon Brilliant Diamond and Shining Pearl.
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First and foremost, you'll need to solve the Eterna City Gym puzzle in Pokémon Brilliant Diamond and Shining Pearl before you can battle Gardenia. This puzzle is a rather simple one, and requires you to locate four Pokémon Trainers hiding amongst the forest in the gym. Pictured above, we have shown the location of all four Trainers; if you can't see the trainer, our player is facing their position. Simply walk to that area and press A, then let the battle commence!

Once all four Trainers have been successfully beaten, Gardenia will appear. Here are the three Pokémon she throws at you, their type, approximate level, and weaknesses:

Pokemon
Type
Approximate Level
Weaknesses
Cherubi
Grass
19
Bug, Fire, Ice, Poison, Flying
Turtwig
Grass
19
Bug, Fire, Ice, Poison, Flying
Roserade
Grass, Poison
22
Fire, Ice, Flying, Psychic

How To Rematch Eterna City Gym and Gardenia

Roserade is shown after having evolved. Roserade in Pokémon Brilliant Diamond and Shining Pearl is one of Gardenia's top Pokémon.
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After defeating the Elite Four and Cynthia in Pokémon Brilliant Diamond and Shining Pearl, you'll be crowned the Sinnoh Champion. You will then be able to return to each gym across the Sinnoh Region and rematch all leaders.

Here is Gardenia's second party of Pokémon that you'll need to prepare for:

Pokemon
Type
Approximate Level
Weaknesses
Jumpluff
Grass, Flying
66
Fire, Flying, Ice, Rock, Poison
Breloom
Grass, Fighting
68
Fire, Flying, Ice, Poison, Psychic, Fairy
Torterra
Grass, Ground
68
Fire, Flying, Ice, Bug
Cherrim
Grass
69
Fire, Flying, Ice, Bug, Poison
Sunflora
Grass
70
Fire, Flying, Ice, Bug, Poison
Roserade
Grass, Poison
72
Fire, Flying, Ice, Psychic

That's all you need to know about beating, and rematching Gardenia of Eterna City Gym in Pokémon Brilliant Diamond and Shining Pearl. If you're still making your way through the gyms, check out Super Contest Shows or the Grand Underground if you need a break from battling. Alternatively, if you're now the Sinnoh Champion, try to get your hands on some legendary Pokémon!