Various Artists - Infernal Proteus (A Musical Herbal) (2002)

Related:
Alio Die - Sit Tibi Terra Levis / Introspective (1990)
In Gowan Ring - Love Charms (1994)
Ah Cama-Sotz - Terra Infernalis (1999)
Apoptose - Nordland (2000)
Chaos as Shelter - In the Shelter of Chaos (2000)
Lotus Eaters - Alienist on a Pale Horse (2001)
Inade - The Incarnation of the Solar Architects (2009)

Your boy DEAR_SPIRIT is about to leave for a little over a week of touring with my band Rohit, so I'm gonna hit y'all with something special that should take a while to burn through. It's a phenomenal 4-disc compilation of songs by various darkwave, neoclassical, neofolk, and otherwise industrial-adjacent artists, each of which is meant to represent a different herb. What's that? Yes, marijuana is included -- Lotus Eaters are given the honor. Other artists include the rest of the above-linked, as well as Amber Asylum, RAIN, Troum, and a whole bunch more. Full track listing here. You're welcome.

1 - 2 - 3 - 4

You should also listen to:

Forseti -
Windzeit (2002)

Sieben -
Ogham Inside the Night (2005)

Alio Die - Sit Tibi Terra Levis / Introspective (1990)

Expansive, ambient drone from Italian composer Stefano Musso. Sit Tibi Terra Levis - Introspective compiles the project's first two releases.

Track listing:
1. Metampsychosis
2. Sempiterna Mutatio
3. The Laws of Manu
4. Rising Circles
5. Frammenti Da Un Sogno
6. Infrapolatia
7. Ollin
8. Mazes and Labyrinths
9. The Passage of Nostalgia
10. Expansion and Contraction
11. Introspective
12. The Evocation of the Invisible
13. Visions of No-Time Worlds
14. Equilibrio D'Ali
15. The Inner Escape
16. Thoughts by the Side of the Path

Cryptic spell

If you like this, try:

Vidna Obmana - Gathering in Frozen Beauty (1989)

David Sylvian - Approaching Silence (1999)