An Ajuga plant prefers to be grown in a cool and moist environment. Ideally, the temperature should be between 60-75°F (15-24°C) during the day and no lower than 50°F (10°C) at night. The humidity should be kept at around 50-60% to ensure that the soil stays moist and the leaves do not dry out. If the air is too dry, you can place a humidifier nearby to increase the humidity.