TLDR: Extraordinary (4.75/5). Unique scent masterfully blended from high quality ingredients.
Reviewed after multiple wearings from a full bottle.
This fragrance is an intriguing addition to the Alchemist's Garden line from Gucci. I own several of these fragrances and like them all (Voice of the Snake & A Midnight Stroll + this one). Hortus Saitatis, "the garden of health," has a medicinal opening, appropriately enough. We get a very realistic papyrus with herbal notes that give a slightly mentholated, but not minty, note that hints at Gucci Guilty Absolute's bandage note. This opening is quickly joined by the faintest sniff of what I suspect to be a camphorous natural oud.
The scent progresses and morphs over and over again. The blending here is so good that it is virtually impossible for me to pick out specific notes. There is a subtle, smokey incense note that comes and goes in the first half hour and that eventually becomes more assertive as things transition from opening to heart notes.
Things get woody, which adds to the dry grassy tone of the papyrus, and the herbal opening develops a pronounced spicy vibe, perhaps from the credited ginger.
The medicinal note never quite goes away, nor does the smokey woody incense quality.
As we reach the base, we get a dry, green rose note which persists through the scent's long duration. A youtube reviewer called this phase "barbequed roses", and I can smell this concept here, but I get more than that from this fragrance because the medicinal herbal astringent element tempers the rose and smoke. There is nothing "jammy" here.
I am ultimately left with an image that recalls an olfactory experience I once had on a visit to the Chelsea Physic Garden in London. This garden, which is itself, in fact, a hortus sanitatis, a garden full of plants with medicinal benefits, was undergoing a slight clean up following a windy few days and the staff were burning some twigs and things that had been knocked to the ground by the winds.
There were flowers in bloom, the herbs and other plants were very fragrant and the floral and herbal smells combined with the slight wafts of smoke to create a remarkable, heady aroma. That smell is what I get from this fragrance. It is remarkable and curiously addictive for me. Perhaps Alberto Morillas was also at the garden that day or had a similar experience at some time in a different garden. Who's to say?
In any event, I love this scent and believe it is a masterpiece. That Gucci produced this fragrance at all is remarkable in an age where designers rarely take chances. Seekers of unique fragrances need to get a sniff of this one before it disappears (as something so non-commercial surely will before too long).
Not a blind buy, although I bought it blind and am glad I did. For me, full bottle worthy with a back-up in my immediate future. Like all of this Gucci line, presentation is excellent. Longevity is 10+ hours and projection is moderate for 6-7 hours.
One additional point: there are hints of both Gucci Pour Homme (2003) and Gucci Pour Homme original (1976) here. Now, to be clear, this scent does not smell like either of them, but the papyrus and slight oud notes of the opening are clearly a nod to GPH1 (but for those folks seeking a fragrance much closer to GPH1, I would recommend Parle Moi De Parfum's Papyrus Oud/71 which is as close as it gets to GPH1). Additionally, in the heart of 1976 GPH, there is sharp, dry, beautiful medicinal note combo that I have never found anywhere else until I smelled Hortus Sanitatis. I have worn this and original GPH side-by-side, and there is a phase in the middle of HS' progression that embodies the GPH note exactly to my nose. It has always been this note that elevated the original GPH in my estimation. It does the same thing here. However, to reiterate, for clarity, taken as a whole, HS does not smell like the whole of either version of GPH. I think it might well smell better.