We have loads of moss in our garden and grass (Oregon). I often wondered the same question. Usually when I'm removing it from my flower beds. I have yet to see any positive benefit to this kind of moss in flower beds.
"Great colors Josephine. Do you have enough for a wedding? That's what mine are growing for this year--as it turns out! I am simply buying baby's breath to go with the zinnias, snapdragons etc for bouquets. I have at least 20 medium size…"