Viriditas: The Green Stage of Alchemical Transformation

You have been through the dark part. The thing you were — the marriage, the career, the faith, the self-understanding — has come apart. You are not destroyed. But you do not feel like yourself. Then, one morning, something small happens. A colour catches your eye. You want to eat a real meal. You notice the light. It is not recovery. It is something earlier than that. The medieval alchemists had a name for it: viriditas. This article explains what they meant, and why it matters.

What Viriditas Meant to the People Who Named It

The word is Latin. It means greenness, or the greening force. Medieval writers used it in two distinct but related ways.

The first came from the workshop. Alchemists working in European laboratories between roughly 1100 and 1600 CE described a sequence of colour changes in the material they were heating. Black came first — the stage they called nigredo, the burning and rotting of what was. Then, at some point in the process, a green tinge appeared in the vessel. Historians of alchemy, including Barbara Obrist in her study of colour symbolism in the medieval laboratory, have documented this green phase appearing in both practical and allegorical texts from the twelfth century onward.¹

The second use came from a Benedictine abbess writing in the Rhineland. Hildegard of Bingen, who lived from 1098 to 1179, used viriditas throughout her medical and theological works to mean the animating moisture that keeps all living things growing. In her Causae et Curae — a medical text — she describes the body's health as depending on its viriditas: the inner greenness that resists dryness, rigidity, and death.² When a person fell ill, their viriditas was failing. When they recovered, it returned.

These two strands — the laboratory colour change and the theological vitality — were not unconnected. Medieval thought saw the natural world and the human soul as mirrors of each other. The green that appeared in the flask and the green that Hildegard felt in the living body were both pointing at the same thing: something that had been latent, compressed, apparently dead, beginning to stir.

Where Viriditas Sits in the Alchemical Sequence

To understand viriditas precisely, you need to know the classical four-stage map. The stages are named by colour. They describe what happens to a substance — and, in psychological reading, to a person — over the course of a complete transformation.

Nigredo is the first stage. The Latin means blackening. Something burns, rots, or dissolves. In the flask, it was the material being broken down by heat. In psychological terms — and Jung spent about thirty years reading alchemical texts to make this case — nigredo is the period when an old way of being collapses. Depression. Grief. Confusion. The feeling that you do not know who you are anymore. The correct order of alchemical stages matters here, because many people expect to jump straight to the gold. Nigredo cannot be skipped.

Viriditas appears at the end of nigredo. Not the end of the process — that comes much later. But the end of pure blackness. A green tinge appears. Something is stirring.

After viriditas comes albedo, the whitening. This is a cooler, more reflective phase. The material has been dissolved and is now being clarified. Then citrinitas, a yellowing, sometimes treated as part of albedo in later texts. Finally, rubedo: the reddening, the completion, the moment everything comes together into a stable new form.

The scholar Lyndy Abraham, in her reference dictionary of alchemical symbolism, notes that viriditas is sometimes classified as a distinct sub-stage and sometimes absorbed into the early albedo, depending on which tradition you are reading.³ What all the sources agree on is its quality: it is the first appearance of life after breakdown. It is not recovery. It is the precondition for recovery.

The Green Lion and What It Devours

Medieval alchemical manuscripts are full of images. One of the most striking shows a green lion eating the sun.

The image is disturbing on purpose. The sun in alchemical imagery represents gold — refined, conscious, achieved selfhood. The green lion swallows it whole. This looks like destruction. The point is that it is also necessary.

The green lion is raw, vital, hungry. It has not yet been shaped by culture, training, or social performance. When it devours the sun, it is doing something precise: it is pulling back the polished exterior to reach the living substance beneath. What looked like gold was just a surface. The lion dissolves it so the real material can be worked.

Von Franz spent decades working alongside Jung at the C. G. Jung Institute in Zurich. She read the alchemical texts in their original Latin and Greek. When she writes about the green lion, she is not speaking loosely. She is making a specific psychological claim: that the force which breaks down a worked, socially legible identity is the same force that makes genuine change possible.

The green of the lion and the green of viriditas carry the same charge. Both refer to something living, unfinished, and generative — a force that precedes form. The colour green in European alchemy was consistently associated with Venus (the planet governing copper, growth, and desire) and with spring vegetation: things that had survived winter and were pushing back up through frozen ground.⁴

This matters practically. If you are in a period where everything you built feels eaten — your status, your relationships, your self-image — the alchemical reading says: that eating is not the end. It is viriditas arriving. Something that was too rigid has been dissolved so that something more alive can take its place. That is not consolation. It is a description of a process that the texts document across centuries.

Jung, Individuation, and the Green Threshold

Carl Jung first encountered alchemical texts seriously in the 1920s. He had been in the middle of what he later called his own confrontation with the unconscious — a period of several years in which his inner life felt barely containable. He recorded dreams, visions, and states he did not fully understand. Then, reading a Latin alchemical text in 1928, he recognised the pattern. The stages the alchemists described in the flask were the same stages he had been living through internally.

He spent the rest of his career making this case in technical detail. His two major works on alchemy — Psychology and Alchemy (Collected Works Vol. 12) and Mysterium Coniunctionis (Collected Works Vol. 14) — run to nearly a thousand pages combined. They are not light reading. But their central argument is available to anyone: the medieval alchemists were running a projection. They attributed to matter what was actually happening in their minds. In doing so, they created the most detailed pre-modern map of psychological transformation that survives.⁵

In Jung's framework, viriditas corresponds to a specific moment in the process he called individuation (the lifelong process of becoming a more whole, more genuinely oneself person). It is the moment after the old identity — what he called the persona, the mask we wear for the social world — has been stripped away. The person feels naked. They do not yet know what they are becoming. But they are, for the first time in perhaps years, actually alive to the present moment.

This connects directly to Jung's concept of the Self: the full, deep pattern of who a person is, including everything their conscious ego has suppressed or ignored. In Mysterium Coniunctionis, Jung discusses the green as a colour of the Self's vitality — the generative potential that the ego, in its need for a stable identity, has been sitting on.⁶

For more on how Jung mapped the alchemical process onto inner change, see our article on Carl Jung, alchemy, and individuation.

Tedeschi and Calhoun's findings do not prove the alchemical model. What they do is establish that the sequence the alchemists described — breakdown, tentative stirring, eventual reconstruction — maps onto something researchers can measure in living people. The green stage is not a medieval fantasy. It is a documented phase in how humans actually change after serious disruption.

Viriditas and the Body: What the Texts Said About Green Vitality

One detail often lost in psychological readings of alchemy is how physical the original texts were. The medieval alchemists were not always speaking in code. They believed that matter and spirit operated by the same laws. When they described a greening force in the flask, they also meant something about the body.

Hildegard of Bingen is the clearest source here. In Causae et Curae, she connects the body's viriditas directly to moisture. Dryness — in the soil, in the body, in the soul — is the condition of death. Green is the condition of life. The herbs she prescribed in her medical practice were chosen in part for their green vitality: their living moisture.²

This is not as distant from modern understanding as it might seem. Research on sleep deprivation and chronic stress shows that prolonged psychological crisis changes the body measurably. Elevated cortisol (the body's main stress hormone) over months or years shrinks the hippocampus (the part of the brain that manages memory and orientation in space and time) and disrupts the brain's ability to build new connections between nerve cells.⁸ Recovery from this state requires what researchers call neuroplasticity (the brain's ability to physically rewire itself with experience) — a term that, like viriditas, names the return of generative capacity after damage.

The alchemists had no neuroscience. But when Hildegard wrote about the body's inner moisture returning after illness, and when the laboratory texts described green appearing after the black stage, they were pointing at the same underlying fact: that life has a way of reasserting itself, and that reassertion has a texture and a colour.

That texture is tender. Green things are not hard. A new shoot is fragile. You can kill it. This is why the alchemical texts are so careful about what you do at the viriditas stage. The old structure has been broken down. The new one has not yet formed. Whatever is stirring is real, but it will not survive being grabbed, named too fast, or forced into the shape of what came before.

How to Recognise Viriditas in a Real Life

The texts are not self-help. They do not tell you what to do. But they do describe what the green stage feels like from the inside, and that description is precise enough to be useful.

The person in viriditas has come through the worst of the collapse. They are not out of the dark, but the dark has a different quality. There is occasional curiosity where before there was only dread. There is a faint pull toward something — a book, a walk, a conversation — where before everything felt equally flat. The psychoanalyst Donald Winnicott, writing in the 1960s, described a related state as "the capacity to be alone" — the ability to simply be present with one's own experience, without needing to perform or protect.⁹ Viriditas is close to this. It is the return of a quiet interior life.

It does not feel like progress. Most people in this phase report feeling fragile and uncertain. They do not trust the stirring. They are right not to trust it too completely. The alchemical texts are clear that the green stage can reverse. The blackness can return. The process is not linear.

What you are looking for is not confidence. You are looking for something smaller: a renewed interest in your own experience. The feeling that you are not entirely absent from your own life. A moment where you notice something — a smell, a memory, an idea — and feel even a trace of genuine response to it. That trace is viriditas. It is the beginning of the next thing, whatever the next thing turns out to be.

If you have come through a crisis of identity — a faith collapse, a marriage ending, a burnout that stripped your professional self-concept down to nothing — the article on identity reconstruction versus affirmations addresses what actually helps during this fragile phase, and what makes it worse.

What the Green Stage Is Not

Two confusions are worth naming directly.

The first is that viriditas is not the end of the process. Some people mistake the first signs of life after a crisis for arrival. They feel the stirring and assume they are through. The alchemical sequence says otherwise. Three full stages follow viriditas before the work is complete. The albedo — a long, quiet phase of clarification and reflection — still lies ahead. The integration work has not begun. Mistaking a green shoot for a finished tree is a known failure mode. The texts call it fixation: stopping the process before it is complete and hardening what should still be fluid.

The second confusion is that viriditas is not spiritual tourism. The word sounds appealing. The colour green is fashionable in certain wellness circles. None of that is what the medieval texts describe. The real green stage is uncomfortable. It follows genuine dissolution. If you have not been through a period you could honestly describe as nigredo — real collapse, real disorientation, real loss — then you are not in viriditas. You may be in a period of ordinary growth, which is good, but it is a different thing. The alchemical stages have a sequence, and that sequence matters.

The Jungian analyst Edward Edinger made this point sharply in Anatomy of the Psyche. The alchemical images are not available to be used decoratively. They describe a process that has a cost. Viriditas only means something against the background of the blackness that precedes it.¹⁰

Frequently Asked Questions

What does viriditas actually mean?

Viriditas is a Latin word meaning greenness or greening force. Medieval alchemists used it to describe a specific moment in the work: after the blackening and dissolution of nigredo, a faint but unmistakable vitality begins to return. It is not full recovery. It is the first sign that something is still alive inside the ruin — the way grass appears through cracked concrete after a long winter.

Is viriditas the same as the green lion in alchemy?

They are related but not identical. The green lion is a specific image — a devouring force, raw and hungry, that strips away everything refined and false. Viriditas is the quality that image carries: the living, dissolving energy itself. You could say the green lion is the agent; viriditas is what it brings. Both point to the same threshold, the moment when raw life reasserts itself before a new form has emerged.

Where does viriditas fit in the four stages of alchemy?

The classical sequence is nigredo (blackening), albedo (whitening), citrinitas (yellowing), and rubedo (reddening). Viriditas does not replace any of these. It appears at the hinge between nigredo and albedo — the moment the blackness begins to lift and something green and tentative pushes through. Some historians, including Lyndy Abraham, classify it as a distinct transitional phase, while others treat it as a quality of the early albedo.

Did Hildegard of Bingen use the word viriditas?

Yes. Hildegard of Bingen, the twelfth-century abbess and mystic, used viriditas extensively in her theological and medical writing. For her it named the animating moisture of God that kept all created things alive and growing. She used it to describe physical health, spiritual vitality, and the generative power of the earth. Her use overlaps with the alchemical sense: both treat viriditas as a greening force that sustains life when conditions allow it.

How does viriditas relate to psychological change today?

Carl Jung read the alchemists closely and argued that their stages mapped onto real inner processes. In his framework, viriditas corresponds to the moment after a psychological collapse — after the old identity has broken down — when a person begins to feel something new stirring. It is not confidence. It is more like a faint orientation toward life again. Research on post-traumatic growth suggests this phase is real: a period of tentative re-engagement follows the worst of a crisis, before lasting change consolidates.