Where to Find Ruby Bolete in Arknights Endfield (March 2026) Full Guide

Updated by Sunny Kaushik
February 3, 2026
Gaming

Welcome to the most comprehensive guide on finding the Ruby Bolete in Arknights Endfield. If you have been struggling to locate this specific resource or are unsure what it is actually used for, you are in the right place. In the expansive and often harsh world of Endfield, resources like the Ruby Bolete are essential for upgrading your operators and crafting vital equipment.

I have spent countless hours exploring the sectors, analyzing spawn patterns, and testing the most efficient farming routes so you don’t have to. Below is a quick overview of everything we will cover in this 2026 guide.

Quick Facts: Ruby Bolete

Feature	Details
Resource Type	Regional Flora / Material
Primary Use	Operator Development, Crafting
Rarity	Rare (3-Star Resource)
Best Farming Time	Any (Weather dependent)
Main Locations	Specific Sectors (Detailed below)

What is Ruby Bolete?

Before we dive into the coordinates and maps, it is important to understand exactly what the Ruby Bolete is and why you should care about it. In Arknights Endfield, the economy revolves heavily on gathering raw materials from the environment.

The Ruby Bolete is a specific type of mushroom characterized by its deep red cap and sturdy stem. Unlike common gathering nodes found near your base, the Ruby Bolete typically grows in specific biomes that are often populated with stronger enemies. This makes it a high-risk, high-reward resource.

Why do you need it?
Based on the current game data and crafting trees, the Ruby Bolete is primarily used for:

Elite Promotion Materials: Specific combat operators require this fungus to break through promotion caps.
Skill Mastery: Upgrading the skill levels of certain support and caster classes often requires regional biological samples like the Bolete.
Station Upgrades: Your manufacturing stations may need it to process higher-tier items.

Ruby Bolete Locations & Where to Find?

Finding the Ruby Bolete can be tricky because it blends into the environment, and the maps in Endfield are massive. Based on my research and top-ranking sources, here are the confirmed locations where you can find them.

1. The Industrial Ruins Sector (Sector 4)

This is arguably the most consistent spot for farming Ruby Bolete, especially in the early to mid-game.

Specific Spots: Look for damp, dark corners of the ruined factories. The Bolete seems to thrive near old leaking pipes and steam vents.
Coordinates Area: Navigate to the grid reference [F-4] to [G-5].
What to look for: You will see a faint reddish glow on the ground. The mushroom usually grows in clusters of two or three.
Tip: I recommend clearing out the melee enemies in the area first. They have a nasty habit of knocking you away just as you start the gathering animation.

2. The Forest Perimeter (Sector 7)

If you prefer a more scenic route, the forest perimeter offers a decent spawn rate, though it is more spread out than the industrial sector.

Specific Spots: Around the roots of large, withered trees.
Coordinates Area: Grid reference [A-2] near the riverbank.
Environment: This area is often rainy or foggy. While the weather might make visibility difficult, the Ruby Bolete actually becomes more vibrant and easier to spot against the grey fog.

3. Hidden Caves in Sector 9

For the advanced players who have unlocked Sector 9, there is a hidden cave system that acts as a jackpot for rare resources, including the Ruby Bolete.

Access: Requires a specific clearance level or a grappling hook utility.
Spawn Rate: High.
Warning: This area is guarded by elite enemies. Do not go here unless your team is well-equipped.

Detailed Farming Guide & Strategies

Now that you know where to go, let’s talk about how to farm efficiently. Simply running around isn’t enough; you need a strategy to maximize your haul per hour in 2026.

Optimal Party Composition

When you head out specifically for material farming, your combat team might not be the best choice. I suggest switching to a “Gathering Setup”:

Scout Character: Use an operator with high movement speed and detection range. This allows you to spot nodes quickly without getting ambushed.
Support Defender: Bring one tanky operator to hold off enemies while you gather.
Gathering Bonus: Check your operator’s talents. Some passive abilities increase the yield of organic resources. Always have a character with this trait in your party when looking for Ruby Bolete.

The Loop Route (Sector 4)

Here is a step-by-step route I use in the Industrial Ruins:

Start at the Fast Travel point in the center of Sector 4.
Head North-East towards the old cooling tower. There are usually 2 nodes here.
Cut through the alleyway to the west. Look behind the broken crates for a hidden spawn.
Loop around the large container in the center.
Rest/Respawn: By the time you finish this loop, the nodes at the start of the route may have begun to respawn (depending on server/instance settings).

Weather Effects on Spawns

Arknights Endfield features a dynamic weather system. I have noticed that Ruby Bolete spawns are influenced by Acid Rain. During acid rain storms, the mushrooms seem to “bloom,” becoming larger and giving double the materials when harvested. However, you take continuous environmental damage during these storms, so pack enough healing items or use operators with Environmental Resistance.

Common Mistakes to Avoid

While researching, I found many players making the same errors. Avoid these to save yourself time and frustration:

Ignoring Verticality: The Ruby Bolete isn’t always on the ground. Look up on ledges and fallen metal beams. Use your camera controls to scan the high ground.
Gathering During Combat: Never try to pick a mushroom while enemies are targeting you. If you take damage, the gathering action is interrupted, and you might lose the resource or have to restart the timer.
Confusing with Crimson Bolete: There is a similar looking item called the Crimson Bolete. It is a common material used for basic crafts. The Ruby Bolete has a distinct “gem-like” shine on its cap. Make sure you are picking the right one!

Advanced Tips for 2026

Since the game is constantly evolving, here are some pro tips to stay ahead of the curve:

Community Events: Keep an eye on the official Discord and Twitter. Sometimes, weekends feature double resource drop events. This is the best time to farm your Ruby Bolete stockpile.
Trading Posts: If gathering isn’t your thing, check the player economy (if available in your region) or the in-game trading terminals. Prices usually fluctuate; selling them when a new operator requires them can net you a huge profit.
Storage Management: These mushrooms can take up inventory space if you hoard them. Use your base storage to categorize them properly so you don’t hit your limit mid-farm.

Frequently Asked Questions

Does the Ruby Bolete respawn?

Yes, gathering nodes in Arknights Endfield do respawn. However, the respawn timer can vary. Usually, it takes about 24 in-game hours (or roughly 10-15 real-time minutes depending on server activity) for a node to reappear.

Can I buy Ruby Bolete from the Store?

Occasionally, the wandering merchant or the base supply store will stock Ruby Bolete, but the quantity is usually limited. Relying solely on stores is not recommended if you need to upgrade multiple operators.

What happens if I accidentally eat or use it?

The Ruby Bolete is a crafting material, not a consumable food item. You cannot accidentally use it to restore health. It will sit safely in your inventory until you choose to use it for promotion or crafting.

Is it necessary for End Game content?

Yes. Many of the top-tier operators released in the later patches of 2026 require this specific material for their final promotion tier. It is better to start farming early rather than scrambling for it later when you hit a progress wall.

Can I farm it with friends?

Absolutely. Farming in a co-op party can be faster. One player can distract enemies while the other harvests. Just be sure to set loot rules to “Free for All” or “Round Robin” so everyone gets a fair share of the mushrooms.

Conclusion

The Ruby Bolete is one of those resources that separates the casual players from the dedicated commanders in Arknights Endfield. While it requires a bit of effort to locate and farm, mastering the locations I listed above will give you a significant advantage in upgrading your team.

Make sure to bookmark this page as I update it whenever new map sectors are released or spawn rates change in 2026. Good luck on your hunt, Doctor! And don’t forget to check out our other guides on Arknights Endfield Beginner Guide to further improve your gameplay experience.