Ragnaroll

Cannabis farming in Valheim, with real agronomy: every strain hides its own ideal fertilizer mix, and it is up to you to find it, harvest after harvest. Twenty-four strains, crossbreeding to obtain them, and buds to smoke whose effects change the way you play.

The loop

1. Buy seeds from Haldor. Rare strains cost more.
2. Set your N-P-K fertilizer mix before planting.
3. Plant with the cultivator, on cultivated ground.
4. Tend: water when the plant is thirsty, prune once it is halfway through its cycle. A tended plant ripens sooner.
5. Harvest: the closer your mix was to the strain's ideal, the better the harvest.
6. Smoke the buds for their effect, or sell them to Haldor and reinvest in better seeds.

Right-click a seed pack to open its strain sheet: the mix for your next plantings, the log of your attempts, and everything you know about the strain.

Fertilizer

Every strain has a perfect mix, never shown. You set yours, you grow, and the harvest gives you a quality.

N5 P5 K5  →  quality 61%
N4 P6 K6  →  quality 79%   getting warmer

The nutrition log keeps every attempt, strain by strain. It follows your character: your expertise travels with you from world to world.

The curve is forgiving near the optimum and harsh beyond it: you feel yourself getting closer without ever being handed the answer.

Harvest quality

Every harvest comes out in one of four qualities, depending on your mix:

Quality	Mix	Bud price	Effect duration
Poor	far off	×0.5	×0.5
Common	in the neighbourhood	×1	×1
Superior	one or two notches off	×1.5	×2
Legendary	exact	×2.5	×4

Your mix also decides how many buds and seeds you get back: a failed harvest does not return its seed. Keeping your legendary buds gives more effect per coin than selling them.

Effects

Every strain has its effect: strength, stealth, stamina, poison or frost resistance, woodcutting, magic, speed, carry weight, swimming, jumping... And every strain has its drawback. A bud's tooltip details both.

Only one strain works at a time: a new bud replaces the current effect. CBD strains are the exception. They heal, with no drawback at all, stack with your active strain, but share the cooldown of healing meads: one or the other. Their quality multiplies the healing instead of the duration.

Tending

Look at a sprout: hovering tells you how it is doing and what it needs.

Midgard Skunk ( healthy )
Growing well, thirsty
[E] Water

One key, empty-handed. It waters if the plant is thirsty, and prunes otherwise. Nothing to craft, nothing to carry: what the key will do is written on screen. Rain waters your crops too.

Full tending brings the harvest forward by up to 40%. It changes nothing about its quality, which depends on the mix alone. Watering does not make up for a bad fertilizer, it saves you time.

Haldor's landraces

Strain	Growth	Resale	Yield
Midgard Skunk	short	modest	1 to 4 buds
Nott Mist	medium	fair	1 to 5 buds
Yggdrahaze	medium	fair	1 to 5 buds
Draugr Kush	medium	fair	1 to 5 buds
Skadi Lights	long	good	1 to 5 buds
Lox Ryder	very short	modest	1 to 4 buds
Galdr Dream	long	high	1 to 6 buds
Meadtonic	medium	fair	1 to 5 buds

Haldor sells two from the start, then one more after each boss, up to the Queen. Each one answers the biome that opens up. The later a landrace arrives, the harder its ideal mix is to guess: you will have to search for it.

Crossbreeding

The sixteen other strains cannot be bought: they are born from crosses.

Plant two strains next to each other, less than two metres apart. When a plant ripens, its nearest neighbour of another strain pollinates it. If the pair is the right one, the harvest returns the seeds of a new strain; otherwise, its own seeds, and you know that pair gives nothing. The number of seeds always follows your mix: a right pair with a poor mix is discovered, but returns nothing.

The tree has four generations:

• two landraces give a hybrid. The first, Fenrisdawg, is born from the two starting landraces; seven more wait for their parents to be on sale;
• a hybrid and a landrace give a second generation;
• two hybrids give a legendary. Two of them wait for one of the last bosses to fall: until then the right pair gives nothing, and the harvest tells you which boss it is waiting for.

A hybrid belongs to the family of at least one of its parents, and its ideal mix is close to the average of theirs: the parents' logs give you a lead. Legendaries are the exception. Their mix strays from their lineage, and has to be searched for.

To search without testing at random, the strain sheet has a Crosses tab: the pairs already tried with that strain, and what they gave. The Collection tab, on the right edge of the window, shows a slot for each of the twenty-four strains; the ones you are missing stay empty. In the field, a ripe plant tells you on hover who pollinated it.

Tolerance

Chain-smoking ends in vomiting. Every bud adds to a saturation that wears off over time, in proportion to its effect's duration; the bud too many is lost, its effect with it, and your meal goes too, as with Bukeperries. CBD strains do not count.

You will see no number and no countdown: your eyelids droop. Two black bands come down from the top and bottom of the screen as saturation rises, and when they grow heavy and waver, the next bud is one too many: it shuts your eyes for a few seconds, and you vomit while they open again. Wait for them to lift.

The Tolerance skill rises as you smoke and drops on death, like the others. At level 0, a single bud takes you to the edge; at level 100, about ten ordinary buds in a row are fine.

Multiplayer

The mod must be installed on the server and on every client, at the same version. The connection is refused with an explicit message otherwise.

This is not an excessive precaution: plants exist in the world as objects of their own. A client that does not know them cannot see them, floods its log with errors, and can silently make buds stored in a chest disappear.

Settings come from the server, except the language and the verbose log: a given crop behaves the same way for everyone. Only an admin can change them during a game.

The mod runs on dedicated servers, Windows and Linux alike.

Configuration

Adjustable in game (Configuration Manager compatible):

Section	Contents
01 - General	language of the mod's texts, verbose log
02 - Trade	seeds sold by Haldor, landraces and legendaries unlocked by bosses, base seed price
03 - Farming	growth time, influence of quality on yield, time saved by tending, rain watering, pollination radius
04 - Effects	effect duration
05 - Tolerance	saturation tolerated at levels 0 and 100, skill progression speed

The mod's texts are in English and French, following the game's language.

Installation

With a mod manager (r2modman, Gale, Thunderstore Mod Manager): install Ragnaroll, and its dependencies, BepInEx and Jötunn, come with it.

By hand: install BepInExPack Valheim and Jötunn first, then put Ragnaroll.dll in BepInEx/plugins/Ragnaroll/. The Nexus Mods archive already has that layout: extract it into your Valheim folder. On a dedicated server, do the same in the server's folder.

Built with Claude

Ragnaroll is designed and directed by grogui, and developed with Claude, Anthropic's AI model. The code, the scripts that generate the plant models and textures, and this page were written with Claude; the strain illustrations are AI-generated. grogui reviews the code, and every feature is tested in game before release.