The types and calendar segments in the "Celtic Tree Circle"
Apple tree (December 23rd to January 1st and June 25th to July 4th)
Fir (January 2nd to 11th and July 5th to 14th)
Elm (January 12th to 24th and July 15th to 25th)
Cypress (January 25th to February 3rd and July 26th to August 4th)
Poplar (February 4th to 8th, May 1st to 14th and August 4th to 13th)
Zürgelbaum (February 9th to 18th and August 14th to 23rd)
Pine (February 19th to 28th and August 24th to September 2nd)
Pasture (March 1st to 10th and September 3rd to 12th)
Linde (March 11-20 and September 13-22)
Oak (March 21st) and yew tree (September 23rd)
Hazelnut (March 22nd to 31st and September 24th to October 3rd)
Mountain ash (April 1st to 10th and October 4th to 13th)
Maple (April 11-20 and October 14-23)
Nussbaum (April 21 to 30 and October 24 to November 11)
Chestnut (May 15-24 and November 12-21)
Ash (May 25th to June 3rd and November 22nd to December 1st)
Hornbeam / hornbeam (June 4th to 13th and December 2nd to 11th)
Alder (June 14-23 and December 12-21)
Birch (June 24th) and beech (December 22nd)