What is named
Secret plants are a feature family mentioned in the official game description. That wording confirms a hidden or rare plant concept, but it does not identify a plant name, model, rarity label, roll table, merge result, or location. This page records the term without inventing a roster.
The checked official description confirms rolling rare plants, merging plants to make them stronger, deploying plants for base defense, and surviving endless Brainrot waves. It does not say whether secret plants come from a special roll, a wave milestone, a merge chain, an event, a code, or another in-game action.
Players searching how to get secret plants should start with the official Roblox game, inspect the live roll and merge interfaces, and treat any result as an in-game observation until a target-specific page or creator announcement documents the steps.