In the Trimerous Mind of Orris

In the Trimerous Mind of Orris

Flowers that bloom with only three petals are known as trimerous flowers. Such as the aloof and mysterious iris, pale mauve or ivory flags reaching for the skies while an unprepossessing gnarly rhizome gestates in the earth, to be harvested and transmuted into the ormolu beauty of orris. This magical process, further enhanced by two to four years of maturation produces one of the most ephemeral and influential materials in perfumery. Iris is the dark princess at the floral christening, hiding in shadows, beautiful in a way that perturbs and intoxicates, quietly aware that she will eternally inspire devotion and bruised dreams.

The chilly hex of Trimerous by Jorum Studio, manifests both as an orris perfume but also as an examination of the effects of orris in a composition. There is a sly sweetness to quality orris perfumes. The maturation of the rhizome increases the level of irones, the violaceous molecules that give orris its distinctive steel and powder personality. The price of orris is enormous, making it one of the most expensive materials in the perfumer’s palette.

Bottle of Trimerous Eau de Parfum sitting in front of Iris rhizomes in dramatic lighting

Rather than simply showcase the beauty of orris, Jorum perfumer Euan McCall has looked at the rhizome’s strange biography from knobbly assemblage of starches and proteins to refined concrète, resinoid and absolute. Rhizomes are odd things, growing horizontally they are strictly speaking modified stems that emit nodes, internodes and auxiliary buds.

As with all the Jorum perfumes, Euan maps out the genetics and psyche of orris within Trimerous, choosing to play against the expected bruised boudoir ghosts of many compositions by adding a kombucha note. Kombucha is a spiritous, slightly fizzy rendition of black tea, created by the symbiotic fermentation of yeasts and bacteria. In Trimerous, it adds an yeasty spumante vibe to the orris and the delicious accompaniment of nectarine, juniper, vanilla, resins and cold angelica root.

Suede and carrot seed compliment the orris, adding suppleness to the ashen fade out. It is only fitting too that Trimerous has a wild, Scottish vernal vibe, grassy, berried, stony and lashed with sea winds. Against the soft power and regalness of the Florentine iris, the local flora and eternally shifting meteorology create a orris perfume of outstanding beauty.

Iris rhizomes sitting atop of earth colour rock in dramatic laughing

Recent Journal Articles

The Shape of Scent: London Craft Week 2026

The Shape of Scent: London Craft Week 2026

This May, Jorum and Craft Scotland present The Shape of Scent: a multi-sensory exploration of fragrance and glass. This special...

Jorum Presents: Spring Scent Collective

Jorum Presents: Spring Scent Collective

This March, Jorum welcomes fragrance enthusiasts, collectors, and the scent-curious to Jorum Marylebone for a special two-day retail residency: The...

Jorum x Craft Scotland: Precious Metals in Marylebone

Jorum x Craft Scotland: Precious Metals in Marylebone

This February Jorum Studio and Craft Scotland present an exciting new collaboration blending the craft of perfumery with the alchemy...

Hello London! Jorum comes to Marylebone.

Hello London! Jorum comes to Marylebone.

We’re embarking on an exciting new chapter here at Jorum, with the opening of our first store in London. Making...

In the Trimerous Mind of Orris

In the Trimerous Mind of Orris

Flowers that bloom with only three petals are known as trimerous flowers. Such as the aloof and mysterious iris, pale...

Exploring Skin Scents

Exploring Skin Scents

Skin scents, perfumes that wear privately and close are a holy grail for many perfume houses. Traditionally achieved with iris,...