Oak
Quercus robur
In the Celtic tree horoscope, the oak is the tree of those born March 21, one of the four trees that rule a single day, at the equinoxes and solstices. The horoscope lends it strength, bravery, perseverance, generosity.
In the horoscope
- March 21
Strength, bravery, perseverance, generosity.
The real tree
- Quercus robur
- Family Fagaceae
A tree of temperate Europe whose acorn hangs from a long stalk.
And in the ogham?
Yes: Dair, one of the few true tree names of the ogham. The ogham is the alphabet of early Ireland from which Robert Graves drew his tree calendar; only ten of the horoscope's 21 trees appear in it (pine and fir share one letter).
Dates: majority version of four published tables. Traits: those the tree horoscope lends (Gerbeaud). Botany: Wikipedia and Wikidata. Ogham: Wikipedia (after McManus and the Auraicept na n-Éces).