Fir dream meaning is explained below using 3 different sources. Each interpretation is shown with its source.

Interpretation 1 — Martha Clarke

Seeing a fir tree in our oneiric thoughts is a good sign. This tree is identified with peace and happiness, so its presence predicts positive moments in personal and social relationships.

If you also see a sun or a moon over the spruce then love and fortune are sure to come.

This tree, which—according to Nordic tradition—comes into our homes every Christmas loaded with balls and colored ribbons, promises certain success, and honest and loyal friends.

Source: The Big Dictionary of Dreams Author: Martha Clarke

Interpretation 2 — Stearn Robinson - Tom Corbett

If your dream involved cutting down a fir tree, it is warning you that your undisciplined spending habits could seriously inhibit your chances of getting ahead; but to dream of a forest of fir trees is an omen of extraordinary good luck, especially if you were aware of their aroma.
Source: The Complete Guide to Interpreting Your Dreams Author: Stearn Robinson - Tom Corbett

Interpretation 3 — Joan Seaman - Tom Philbin

1. Tremendous good luck—usually regarding financial affairs, often social.

2. Difficulties in business, often due to one’s own doing (to cut a fir tree down).

Source: New American Dream Dictionary Author: Joan Seaman - Tom Philbin