Caring for a terrarium involves maintaining a suitable environment for the plants inside. Ensure the terrarium is placed in an area with indirect sunlight to prevent overheating. Monitor the moisture levels of the soil; most terrariums require watering only when the top layer of soil feels dry. Use a spray bottle for humidifying if needed. Trim any overgrown plants to maintain shape and health. Regularly check for pests and remove any dead leaves to ensure a thriving ecosystem. Lastly, avoid placing your terrarium in drafty areas or near heat sources to protect the delicate plants.