# Stage 3 The sprouts have become full-grown plants. To generate more resources, users need to cross trees to improve their characteristics and grow Ents to keep the garden from wilting. Crossbreeding can result in improved versions of plants with unique properties and mutated plants. Mutations are necessary for plants to survive in different biomes (e.g., frost resistance and lower water consumption). In the process of crossing, new seeds can appear at random moments At this stage it is possible to improve the character, send materials for recycling to get clothes, buy real estate, and more active interaction with players (pooling, exchange of resources, clothes, and more). Also, there are in-game activities for avatars stemming from the farm mechanics for clothing production. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://birch-io.gitbook.io/public-document-collection/game-concept/stage-3.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.