Ulcerated Tree Spirit

Ulcerated Tree Spirit
Type	Dungeon Boss
Region	Limgrave, Mt. Gelmir, Mountaintops of the Giants
Runes	15,000
Weak To	Fire, Frostbite
Required	No

Ulcerated Tree Spirit is a dungeon boss in Elden Ring.

The Ulcerated Tree Spirit is a huge serpent of bark and roots that guards several places across the Lands Between. The first waits at the bottom of Fringefolk Hero's Grave, right beside the starting area. The other two guard the Minor Erdtree on Mt. Gelmir and the end of Giants' Mountaintop Catacombs. The fight matters because each boss spirit drops valuable loot, and two of them carry a Golden Seed that adds a charge to the healing flasks.

Lore

The tree spirit is a giant, snake-like body of pale bark that looks like a mass of branches and roots. Swollen red welts cover its hide. It crawls on two clawed arms and drags a long tail behind it.

Tree spirits dwell close to the Erdtree and its roots. They breathe searing golden fire, and most of them carry a Golden Seed.

Where to find Ulcerated Tree Spirit Location?

Fringefolk Hero's Grave, at the end of the dungeon (Stranded Graveyard Site of Grace)
Minor Erdtree (Mt. Gelmir), east of the Road of Iniquity Site of Grace
Giants' Mountaintop Catacombs, at the end of the dungeon

Ulcerated Tree Spirit map location:

Map credit by Map Genie.

Weaknesses

Weak To	Fire, Frostbite
Resists	Holy
Immune	Sleep, Madness
Parry	No

Phases

Phase 1: The spirit fights with claws, tail and bites, dealing physical damage.
Phase 2: The spirit hunkers down and bursts in a golden explosion, then adds holy damage to its attacks for the rest of the fight.

Attacks

Charge Grab: it roars, climbs up and lunges with its mouth open; roll to the left as it rushes in.
Double Charge: a first lunge is followed by a second grab lunge; roll left twice and stay calm through the follow up.
Golden Breath: its mouth glows yellow before a long stream of golden fire; sprint sideways and then close in on its flank.
Claw Swipes: one swipe from each arm with a short pause between; roll through each swipe toward its body.
Tail Whip: it coils its tail around its back and lashes across; back away during the wind up, then roll.
Claw Slams: it raises a claw and stomps in a fixed rhythm; roll clear of the first slam and punish after the last.
Head Flop and Neck Swipe: it slams its head down in front and may swing it across; roll to the right and strike its neck.
Golden Flame Pillars: it cranes its neck up and glows, then pillars of golden fire erupt from glowing spots on the floor; sprint away and avoid the marked spots.

Tactics

Bring fire damage, such as Fire Grease or Fire Pots, and gear that raises holy defense for the second phase.
Stay close to its left arm, where most claw and head attacks overshoot.
Punish the slow claw slams and head flops with one or two light attacks, then reset.
Back away from the tail wind up and roll through the lash.
Sprint away at once when it hunkers down and glows, because the explosion that follows hits very hard.
In phase two, avoid blocking where possible, since its attacks now carry holy damage through a shield.
Spirit Ashes help split its attention, which opens its flanks.

Best Builds

Fire damage

The spirit takes extra damage from fire, so a fire weapon or fire buffs speed up the fight.

Gear	Fire Grease, Fire Pot

Frost damage

Frostbite builds up quickly on the spirit and adds a burst of damage each time it triggers.

Holy defense

Raising holy defense softens the golden fire and the second phase attacks.

Gear	Haligdrake Talisman, Holyproof Dried Liver

Summons

Spirit Ashes allowed

Drops

Defeating it grants 15,000 runes.

Name	Image
Golden Seed
Banished Knight Oleg
Leaden Hardtear
Cerulean Hidden Tear
Glovewort Picker's Bell Bearing [2]	-

Notes

The Fringefolk Hero's Grave spirit drops a Golden Seed and Banished Knight Oleg.
The Mt. Gelmir spirit gives 18,000 runes and drops the Leaden Hardtear and the Cerulean Hidden Tear.
The Giants' Mountaintop Catacombs spirit gives 48,000 runes and drops a Golden Seed and Glovewort Picker's Bell Bearing [2].
Weaker tree spirits also roam as regular foes in Stormveil Castle, the Capital Outskirts and Leyndell.

All Bosses

The table below lists all Bosses in Elden Ring.