How often should I water my ferns to ensure their vibrant greenery thrives and flourishes without succumbing to neglect or over-watering? Is there a specific frequency that aligns with the unique needs of different fern species, or should I instead focus on the environmental conditions surrounding them, such as humidity levels and ambient temperature? Furthermore, what factors ought to be considered when determining the right amount of moisture, particularly when accounting for seasonal variations or differing pot sizes? Could the type of soil also play a pivotal role in this equation, influencing how quickly it retains or drains water? Might it be prudent to observe the foliage and soil texture as indicators of hydration needs? How does one establish a routine that accommodates these variables while ensuring that ferns remain lush and healthy? Are there particular signs of distress to be wary of that signal an urgent need for adjustment in my watering regimen?