• Hyacinth does not require direct sunlight, this plant, which can also benefit from indirect lights, should be stored in a shade and not too hot environment. Hyacinth is a plant sensitive to wind and airflow. For this reason, it should not be kept in an environment with air flow. You can plant hyacinth bulbs in whatever season you have. If you have planted your flowers in cold times such as autumn or winter, water your flowers as soon as you plant them. Then irrigate as soil moisture decreases. Keep the onions outside and in the cold until the first days of spring, then move them to a place with relatively more sunshine.