Water your Maidenhair Fern on a weekly basis. This plant loves water, so make sure to keep its soil evenly moist. The soil should begin to feel dry by the end of the week, at which point you can water it once more. Reduce the amount of water you give your plant during the winter months.
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.