Around March 20th we celebrate the Spring Equinox, Ostara or Alban Eiler , As this moon only takes us to March 17th this is covered in the next Moon.
Celtic Tree Calendar
18th February - 17th March is Ash tree Month. Ash people are quick witted, spontaneous and gregarious. They have a lively curiosity and are intelligent, persuasive speakers, enthusiastic, inquisitive and communicative. They love discussing new ideas and projects. Ash people need to focus their mental abilities or they can become nervous and irritable.
The Adder symbolizes wisdom and spiritual energy.
A good month to do magic that focuses on the inner self. Associated with ocean rituals, magical potency, prophetic dreams and spiritual journeys, the Ash can be used for making magical (and mundane) tools -- these are said to be more productive than tools made from other wood. This is the time to prepare for Ostara.