Water your Blue Star Fern on a weekly basis, and be aware that the amount of water you give it will vary depending on the time of year; more during the growing season, less during the winter months, and adjustments all in between. Make sure to keep its soil moist, and preferably begin watering from the sides of the pot, as this plant does not like to be directly watered.
To check the water levels of your plant’s soil, place a water meter several inches into the soil, where it will give you an accurate indication. If you do not own a water meter, stick one finger knuckle-deep into the soil. At this depth, you will be able to accurately account for the soil’s level of moistness.