How to Water brittle bladder fern?
Maintain lightly moist cool soil, fern roots cannot endure full dryness

brittle bladder fern · Cystopteris fragilis
Also known as: brittle fern; fragile fern
Grow in fertile, moist but well-drained soil in partial shade with shelter from cold, drying winds
Maintain lightly moist cool soil, fern roots cannot endure full dryness