Instant Fertilizer™

Valheim mod that allows to fertilize plants (crops, trees) and pickables (berries, mushrooms, flowers) to grow / respawn them faster (or even instantaneously!). Configurable fertilizer list (default: 3 Ancient Seeds or 1 Ymir Flesh) and remaining time reduction, enforceable server-side. Translations available.

Video showcase

https://github.com/nbusseneau/InstantFertilizer/assets/4659919/08ef5ded-b1bb-41f7-abd7-689072d7b3f3

Features

• Fertilize plants (crops, trees) and pickables (berries, mushrooms, flowers) to make them grow or respawn faster, using items from a configurable fertilizer list.
  • Vines can also be fertilized, after which their pickable berries can also be fertilized, though it should be noted this is a bit finnicky and works best with fresh vines that were just grown rather than preexisting vines.
• By default, the fertilizer list allows using either 3 Ancient Seeds (after Eikthyr has been defeated) or 1 Ymir Flesh (after The Elder has been defeated).
  • If multiple fertilizers are in inventory, consumption priority is given based on list order: make sure to position less valuable fertilizers before more valuable ones in the list.
• By default, remaining time is reduced by 100% when fertilizing, meaning the effect is instantaneous, but this percentage can also be configured to a lower value. In this mode, a single plant / pickable can be fertilized multiple times with diminishing returns (but not more than once with the same fertilizer).
• Translations available: English, French. New languages can be added easily (see below for details).

But why?

Instant Fertilizer™ aims to address the annoyances around initially setting up a farm: the first few Carrot seeds, Turnip seeds, and Onion seeds you find in the wild can be quickly cycled with fertilizers in order to speed up getting to a sustainable state.

To achieve that, the default configuration aims to give a purpose to niche items with little use in vanilla by:

• Adding a new resource sink for Ancient Seeds, offering:
  • An interesting choice in early game between using your first few Ancient Seeds to set up your first Carrot farm or stocking up to summon The Elder.
  • An incentive in mid game / early late game to keep farming Ancient Seeds to set up your first Turnip or Onion farms.
• Adding a new resource sink for Coins via Ymir Flesh, offering an interesting choice in mid game / early late game between spending your Coins on fertilizers or stocking up to buy expensive Eggs.

Compatibility

With vanilla clients / clients not using the mod

Plants and pickables are managed by the current zone owner (usually the first person to enter a zone), however Instant Fertilizer™ claims ownership of any plant or pickable on fertilizing. It should thus work transparently with all clients, regardless of if they use the mod or not: the fertilized plant or pickable will grow or respawn instantaneously from their point of view as well (which might make you look suspicious if they're unaware).

With other mods

Instant Fertilizer™ hooks onto the Pickable, Vine, and Plant components and should work transparently with all mods, including those that add new plants or pickables. In particular, Instant Fertilizer™ is explicitly made to be compatible with PlantEverything and Seasons. Feel free to report any issue you find.

Translations

Instant Fertilizer™ comes with the following languages available out of the box:

• English
• French

To add a new language as a user:

• Navigate to your BepInEx/plugins/nbusseneau-Instant_Fertilizer/ directory.
  • From r2modman, use Settings > Browse profile folder to find your BepInEx/ directory.
• Find the Translations/ directory.
• Make a copy of the English/ directory, then rename it to the appropriate name for your language (see valid folder names).
• Edit <your_language_name>/InstantFertilizer.json as appropriate using a text editor.

If you localize Instant Fertilizer™ for your own language, you are most welcome to send your translation file my way, and I will integrate it as part of the languages available by default.

Install

• This is a client-side mod, which can also be installed server-side.
• If installed on the server, server configuration will be enforced to all clients, however clients will not be forced to have the mod installed.

In other words:

• This mod can be installed on servers intended for Xbox crossplay, and all clients will still be able to join.
• This mod can be installed on your side as a client, and you will still be able to join any server (even vanilla ones). However, since this mod is not only cosmetic but impacts gameplay, you should probably ask the admin and other players first out of courtesy.

Thunderstore (recommended)

• [Prerequisite] Install r2modman.
• Click Install with Mod Manager from the mod page.

Manually (not recommended)

• [Prerequisites]
  • Install BepInExPack Valheim.
  • Install Jötunn, the Valheim Library.
• Download nbusseneau-Instant_Fertilizer-0.4.2.zip.
• Extract the archive and move everything to your BepInEx/plugins/ directory. It should look like this:

  BepInEx/
  └── plugins/
      └── nbusseneau-Instant_Fertilizer/
          ├── CHANGELOG.md
          ├── icon.png
          ├── manifest.json
          ├── plugins/
          └── README.md
  

Special thanks

Instant Fertilizer™ is a reimplementation of a mod initially created by warpalicious. Check out their POI content mods, you won't regret it 👍

Changelog

All notable changes to this project will be documented in this file.

The format is based on Keep a Changelog, and this project adheres to Semantic Versioning.

Unreleased

0.4.2 - 2025-08-30

Changed

• Update BepInEx to 5.4.2333.

Fixed

• Fix Fertilize percentage still applying to original time instead of remaining time for pickables.

0.4.0 - 2025-08-29

Added

• Add compatibility with Seasons.

Changed

• Support for 0.219.13 (The Bog Witch).
• Update Jotunn to 2.26.1.
• The Fertilize percentage config value now applies as a percentage of the remaining time instead of the original time.

Fixed

• Fix fertilizing not working and flooding logs with exceptions when used in brand new worlds due to "negative times" calculations. Note that even then, plants / pickables will only be able to grow when current world time has exceeded their default growth / respawn time.

0.3.0 - 2024-07-23

Added

• Add support for Ashvines.

Fixed

• Improve detection logic to avoid fertilizing hidden pickables.

0.2.0 - 2024-07-04

Added

• Add config option to reduce remaining time by a percentage of total growing / respawning time when fertilizing, rather instantaneously bypass the whole remaining time.
• Add possibility to fertilize the same plant / pickable multiple times, but not more than once with the same fertilizer.

Fixed

• Fix translation file filenames.

0.1.1 - 2024-06-24

Changed

• Improve README and fix some typos.

0.1.0 - 2024-06-24

• Initial version.