Every day is a holiday for the Deru. Each holiday honors a different type of sacred tree. One tree of the type honored should be planted whenever possible during the holiday.
October 28-November 24 - Blackthorn (Ngetal)
November 25-December 22 - Elder (Ruis)
December 24-January 20 - Birch (Beth)
January 21-February 17 - Rowan (Luis)
February 18-March 17 - Ash (Nuin)
March 18-April 14 - Alder (Fearn)
April 15-May 12 - Willow (Saille)
May 13-June 9 - Hawthorn (Huath)
June 10-July 7 - Oak (Duir)
July 8-August 4 - Holly (Tinne)
August 5-September 1 - Hazel (Coll)
September 2- 29 - Cedar (Muin)
September 30-October 27 - Ivy (Gort)
October 28-November 24 - Elm (Ngetal)
