Adjustable Humidity Design: Inner humidity can be set from 50% to 100%. Rotate the regulator to adjust humidity and temperature to suit different seedtoseedling growth stages. Ventilation holes support rapid growth and provide full control over the germination process. Material: Seedling trays are made of quality PP material that is environmentally friendly, sturdy, and durable for longterm use. The clear plastic trays allow easy observation of plant development without interrupting the process. Grow Lights: Plant growth lights promote stem and root development, carbohydrate accumulation, and nutrient uptake. The lights enable control over light quality, light intensity, and photoperiod to keep plants in an growing environment, improving quality and yield. for Plants and Seeds: Each cell on the sprouting trays provides adequate space for seedlings to develop a strong root system before transplanting to the garden. Each greenhouse cell tray includes drainage holes at the bottom for proper ventilation and drainage. The transparent plastic trays make it easy to monitor growth. Practical Uses: Start vegetables indoors in early spring, using humidity control and grow lights to optimize germination and seedling vigor regardless of outdoor conditions. Grow herbs and leafy greens yearround in a bright indoor space or on a balcony, maintaining consistent growth with adjustable humidity and lighting. Propagate seedlings for transplant to outdoor beds or containers, ensuring robust root systems and proper drainage before planting.