The trees will adorn the Dome square, the 11th of November embankment and the Rātslaukums square.
The Dome square tree will be lit December 2 while the Rātslaukums tree will have to wait until December 6. There will be more than 20 Chirstmas trees set up in Riga and municipal employees will decorate the fir trees growing in Riga as well.
Officials later planted new fir trees to assuage environmental causes or the Ghost of Christmas Yet-to-come.
The press announcement notes that more than 1,3 million trees have been planted this year in Riga, of which more than 200,000 are fir trees.
The choice is particularly important given Riga's oft-repeated claim to be the birthplace of the Christmas tree tradition owing to evidence that in 1510 a decorated tree was ceremoniously burned as a way of marking Yuletide.
Estonian capital Tallinn also claims to be the birthplace of the Christmas tree, plus some other places we can't even remember, but obviously they are wrong.
You can read more about Riga, the home of the Christmas tree in a feature we produced last year HERE.
Last year Riga lit up its chief Christmas tree by chain reaction, setting a new Guiness World Record.