This is an absolutely beautiful, earthy scent.
Just smelling myself while wearing this makes me feel like I've spent the morning outdoors, even if I've been at my desk all day. It reminds me of green growing things just starting to push their way up out of the earth in spring.
The earthy/dirt scent is strongest in the first moments of the perfume. Not unlike the month of March itself, as this perfume ages I smell less "wet dirt" and more "growing things". In the dry-down it's a light, slightly greenish floral - but not "floral" in the way that we tend to associate it with perfume - it actually smells like you're near a flower-bed: flowers, but also stems and leaves, and mud and worms.
In addition to the dirt and flower and green notes, there is also a strong element of bark, and/or possibly moss, which is especially prominent in the early moments of the fragrance (first 15 minutes to 1/2 hour). It's hard to describe the beauty of this bark-like scent, but it's plugged directly into parts of my memory, pulling emotional reactions straight out of my past.
I find Black March very grounding and beautiful - to me it smells like change, and new beginnings - it's very appropriate for Spring.
Like so many people, I can struggle to embrace change as a good thing in life. I've been known to resist even positive life changes, kicking and screaming all the way. For me this scent is a reminder that new things can be just as good (but different) as old things. As is true with life, Black March progresses, it goes through complex changes - notes are lost, and notes are gained - this is not the same scent from moment to moment.
There can be a bittersweetness to Black March ... beyond anything else, I think of it as a very "real" scent - it reminds me in a very first-hand way of the direct connects that our perception of scent has to our memories and emotions.
I have made my way thorough most of a generous decant of the water perfume, and I plan to buy a full bottle of the absolute - this is something I'd prefer to dab on pulse points than to spray all over, there's something quiet and private about Black March, secrets just between me and the worms.