Luis (Rowan): January 21 - February 17
Nion (Ash): February 18 - March 17
Fearn (Alder): March 18 - April 14
Saille (Willow): April 15 - May 12
Uath (Hawthorn): May 13 - June 9
Duir (Oak): June 10 - July 7
Tinne (Holly): July 8 - August 4
Coll (Hazel): August 5 - September 1
Muin (Vine): September 2 - September 29
Gort (Ivy): September 30 - October 27
Ngetal (Reed): October 28 - November 24
Ruis (Elder): November 25 - 22
December 23 is "The Nameless Day" and has no tree.
