The available research is inconsistent about whether Heroic dungeon final bosses award Petrified Root. Treat this as an unverified possibility and do not plan it as a confirmed source.
Retail PC / Global
WHERE & HOW TO FARM
Where to farm
Heroic final bosses in Midnight dungeons are the disputed source; the supported alternatives are Prey completion caches and Delve end caches.
A reported method is to defeat a final boss in a Midnight dungeon on Heroic and inspect personal loot, but the available evidence also says Petrified Root drops exclusively from Prey and Delves. Because these statements conflict, this guide does not present dungeon runs as a verified root farm. Use Prey or Delves when root collection is the goal, and treat any root observed in a dungeon as an in-game result that needs confirmation.
Level 90 access to Midnight dungeons and Heroic difficulty, if investigating the reported dungeon source.
For reliable supported root attempts, access to Midnight Prey or Delves.
A suitable group for Heroic dungeons, or the ability to complete the chosen Prey or Delve.
If testing the disputed method, choose a Heroic Midnight dungeon and confirm its difficulty.
Defeat the final boss and inspect personal loot for Petrified Root.
Record whether a root appeared, but do not assume the result establishes a repeatable source.
For planned farming, select an available Prey event or a Delve at tier 4 or higher.
Complete the activity and inspect its cache for Petrified Root.
Use any roots collected in an unlocked profession recipe or retain them for a planned craft.
Farming tips
Prey caches and Delve caches are the supported sources described for repeat attempts; neither guarantees a root.
A single dungeon result is not enough to resolve the conflicting source claims; verify repeatability before investing farm time.
Repeat, collect and use
Prey and Delves are repeatable chance attempts, with variable cache contents. The Heroic dungeon claim is unresolved, so do not treat it as a dependable repeatable farm.
Common mistakes
Planning a root supply around Heroic runs treats a disputed claim as certain; prioritize Prey or Delves.
Assuming a root seen once proves a consistent dungeon source overstates what one observation establishes; track further results.
Leaving Prey or a Delve before claiming its completion cache can lose the supported attempt; finish and loot the cache.
When to stop or switch
Stop using Heroic dungeons as a root method unless repeated in-game results confirm the source; stop supported attempts when you have enough roots or prefer another activity.