Being the representative of the lands and seasons, the Thane of the Grove has many duties, some requiring her physical work protecting the lands which she doe as the leader of the Sisters of the Thorn but many are ceremonial as those below.
- Samhain (SOW-in): This marked the end of summer and the harvest, and the beginning of the darker half of the year. It was a time when the veil between the living and the dead was believed to be thin, and ancestors were honored. Bonfires were lit, and people often wore costumes.
- Dualgas na Talún (Dool-gus na Tal-oon) Spring Ritual - The base of a tall tree stripped of its bark, with the foliage left only at the top, then ribbons are hung, too long, for the rest in many baskets on the ground. The day begins with games and merriment until in the evening, as the sun is westering, The Thane stands as a symbol next to the tree and dancers weave in and out binding her to nature. -- The Thane is never free, for they bear Dualgas na Talún, or "The Duty of the Land" to maintain the continued prosperity.
- Lughnasadh (LOO-nas-ah): This festival marked the beginning of the harvest season and was dedicated to the god Lugh. It was a time for feasting, games, and fairs. Some traditions included handfasting ceremonies, a kind of trial marriage.
- Ríona na hOighearna (Ree-oh-na na Hee-urn-ah) Meaning "Queen of the Ice." wherein the Thane, representing the power and cold beauty of winter sits upon a throne detailed in frosty patterns, animal carvings (fox, hare & ravens).