During the hot season, we have very good humidity sometimes even over 60%, during the cold season, we notice that the humidity reaches 30-35% (below the normal limit of 40-60%).
When the humidity level drops, moss decorations begin to dry out and become brittle.
The humidity level need to be increase with various methods: using a humidifier machine, or simple having a ceramic humidifier near the heating element. I say that it is worth enjoying a decoration with moss.