What Does Balsam Fir Smell Like?
You notice the change before you notice the elevation.
Somewhere around 3,000 feet on most Catskill approaches, the hardwoods stop. The maples and the beeches thin out and the trail goes dark and close, and the air turns green and cold and sweet. That is balsam fir. Once you have smelled it standing still in a stand of it, you will recognize it anywhere for the rest of your life.
The note itself
Balsam is green, but it is not sharp. Pine is sharp. Spruce is almost sour. Balsam sits underneath both of them, softer and rounder, with a sweetness closer to vanilla than to citrus.
The technical reason is bornyl acetate, the compound responsible for most of what you are smelling. It is what makes a fresh-cut Christmas tree smell like a Christmas tree and not like a hedge.
Three things you will pick out if you stand there long enough:
Green sweetness. The first thing that arrives and the thing most people mean when they say a candle smells like a tree.
Resin. Balsam fir bark blisters with sap. Press one and it will stick to your thumb for the rest of the hike. That is the balsamic part of the name, and it is the warmth underneath the green.
Cold. Not a smell, exactly. Above 3,000 feet the air holds moisture and the ground stays damp under the needle litter, and that changes how everything else reads. Balsam smells different at elevation than it does in a parking lot in December.
Why it disappears
Cut balsam fades fast. A wreath smells extraordinary for about a week and then smells like a wreath. The aromatic compounds are volatile, which is the whole reason they reach your nose in the first place, and they leave.
This is the practical argument for a candle. A wreath is a countdown. A candle holds the note in wax and releases it when you light it, which means February can smell like the col below Friday Mountain if you want it to.
Where to smell it for yourself
The spruce-fir zone in the Catskills takes over above 3,000 feet. Any of the high peaks will get you there. Slide, Hunter, and Blackhead have trails the whole way. Sherrill does not, which is a different kind of day.
Go stand in it. Then come back and tell me whether we got it right.
Catskill Forest No. 01 is built on that note: balsam fir, hemlock moss, bluestone.