FFXIV Saint Mocianne’s Arboretum (Hard): Unlock + Boss Guide

Saint Mociannes Arboretum (Hard) in FFXIV

To unlock the Level 70 dungeon Saint Mocianne’s Arboretum (Hard), you need to accept the Level 70 quest “Secret of the Ooze” from Sawney in Rhalgr’s Reach (X:11.7, Y:11.9).

But this quest can only be started after you clear the normal-difficulty dungeon Saint Mocianne’s Arboretum. You’ll also need to finish the final MSQ for patch 4.0 of the Stormblood expansion before you can unlock this dungeon’s hard mode.

In this guide we’ll show you exactly how to unlock the dungeon, how to handle each of the boss’ mechanics, and we’ll list all possible loot as well.

Step-by-Step Unlock Guide

Saint Mocianne’s Arboretum as seen from The Dravanian Hinterlands / Final Fantasy XIV
Saint Mocianne’s Arboretum as seen from The Dravanian Hinterlands
  1. Accept and complete the Level 60 quest “An Overgrown Ambition” from Tetchy Treasure Hunter in The Dravanian Hinterlands (X:12.3, Y:19.6).
  2. Complete the Level 70 MSQ “Stormblood” from Pipin in The Lochs (X:32.6, Y:22.9).
  3. Accept the Level 70 quest “Secret of the Ooze” from Sawney in Rhalgr’s Reach (X:11.7, Y:11.9).
  4. Meet Sawney outside Saint Mocianne’s Arboretum in The Dravanian Hinterlands (X:10.2, Y:23.8).

Detailed Unlocking Guide

To unlock Saint Mocianne’s Arboretum (Hard), you’ll need to first clear its normal version.

So do to that, you’ll need to start the quest “An Overgrown Ambition” from Tetchy Treasure Hunter in The Dravanian Hinterlands (X:12.3, Y:19.6) and finish the dungeon to proceed. Check out our previous guide on Saint Mocianne’s Arboretum if you need help.

Once you’re done with that, continue doing your MSQs until you finish the Level 70 MSQ “Stormblood” from Pipin in The Lochs (X:32.6, Y:22.9).

Finishing this quest allows you to accept the quest needed to unlock expert-level dungeons in the Stormblood expansion, including Saint Mocianne’s Arboretum (Hard).

So once you’re ready, speak with Sawney in Rhalgr’s Reach (X:11.7, Y:11.9) to begin the unlocking quest.

Sawney’s map location in Rhalgr’s Reach / Final Fantasy XIV
Sawney’s map location in Rhalgr’s Reach

Sawney has traveled to Ala Mhigan territory seeking your help as trouble brews in the arboretum once more.

Meet Sawney outside Saint Mocianne’s Arboretum in The Dravanian Hinterlands (X:10.2, Y:23.8) to continue.

Soon after you arrive, Midnight Dew will appear with a very dirty korpokkur.

Gunk has been accumulating inside the arboretum, making the flora and fauna more dangerous and lethal. She’ll ask you to help investigate the cause and clean the arboretum.

After talking to Sawney and Midnight Dew, Saint Mocianne’s Arboretum (Hard) will be unlocked.

This dungeon requires at least a Level 70 Disciple of War or Magic job and an average item level of 340 to enter.

Boss #1: Nullchu

Nullchu, a massive Chaochu / Final Fantasy XIV
Nullchu, a massive Chaochu

Mechanics

  • Vine Whip: A non-telegraphed cleaving tankbuster on the primary target. Face the boss away from the party and shield through the damage.
  • Odious Air: A frontal cone AoE that applies a “Poison” DoT for 15 seconds. Dispel the DoT as necessary.
  • Fault Warren: A stack marker on a random player. Stand inside the marker to reduce incoming damage.
  • Sludge Bomb: One player will receive an orange marker for a circle AoE after a few seconds. This AoE will spawn a green puddle that applies a constant “Leaden” debuff and “Pollen” DoT.
  • Devour + Odious Atmosphere: The boss will devour a small Rafflesia, then turn around and use a continuous room-wide frontal cone that applies “Poison” for 30 seconds. Position yourselves behind the Rafflesia as soon as it spawns.
  • Taproot: Large circle AoE markers on all players. Spread out to avoid overlap.

Rewards

  • 15 Allagan Tomestone of Poetics
Name Type Rarity
Royal Volunteer’s Bracelet of Aiming Bracelets Dungeon (Green)
Royal Volunteer’s Bracelet of Casting Bracelets Dungeon (Green)
Royal Volunteer’s Bracelet of Fending Bracelets Dungeon (Green)
Royal Volunteer’s Bracelet of Healing Bracelets Dungeon (Green)
Royal Volunteer’s Bracelet of Slaying Bracelets Dungeon (Green)
Royal Volunteer’s Boots of Casting Feet Dungeon (Green)
Royal Volunteer’s Boots of Scouting Feet Dungeon (Green)
Royal Volunteer’s Boots of Striking Feet Dungeon (Green)
Royal Volunteer’s Heavy Boots of Fending Feet Dungeon (Green)
Royal Volunteer’s Heavy Boots of Maiming Feet Dungeon (Green)
Royal Volunteer’s Thighboots of Aiming Feet Dungeon (Green)
Royal Volunteer’s Thighboots of Healing Feet Dungeon (Green)
Royal Volunteer’s Ring of Aiming Ring Dungeon (Green)
Royal Volunteer’s Ring of Casting Ring Dungeon (Green)
Royal Volunteer’s Ring of Fending Ring Dungeon (Green)
Royal Volunteer’s Ring of Healing Ring Dungeon (Green)
Royal Volunteer’s Ring of Slaying Ring Dungeon (Green)

Boss #2: Lakhamu

A soulkin fauna (Lakhamu) / Final Fantasy XIV
A soulkin fauna (Lakhamu)

A few seconds into the fight, the outer edges of the arena will be filled with thorns, applying a constant “Stab Wound” DoT and a stacking “Vulnerability Up” debuff for 50 seconds.

Mechanics

  • Stone II: A single-target tankbuster attack on the primary target. Use mitigation skills and heal through the damage.
  • Tectonics: A room-wide AoE attack.
  • Earthquake: A point-blank AoE followed by a donut AoE.
  • Empty Gaze: A look-away attack that applies “Hysteria” for five seconds. Face your character away from the boss before the cast goes off.
  • Landslip + Rockslide: Four directional knockback AoEs will cover the entire arena. At the same time, “Silt Golem” mobs will fire large column AoEs that apply stacking “Vulnerability Up” debuffs for 50 seconds.
    The knockback spans half the arena, so position yourselves to be knocked into a safe zone. Knockback immunity skills do not work for this mechanic.
  • Earthshaker: Both DPS players will receive a marker for a non-telegraphed frontal cone. Spread out to avoid overlap.

Rewards

  • 20 Allagan Tomestone of Poetics
Name Type Rarity
Royal Volunteer’s Earrings of Aiming Earrings Dungeon (Green)
Royal Volunteer’s Earrings of Casting Earrings Dungeon (Green)
Royal Volunteer’s Earrings of Fending Earrings Dungeon (Green)
Royal Volunteer’s Earrings of Healing Earrings Dungeon (Green)
Royal Volunteer’s Earrings of Slaying Earrings Dungeon (Green)
Royal Volunteer’s Armguards of Casting Hands Dungeon (Green)
Royal Volunteer’s Armguards of Fending Hands Dungeon (Green)
Royal Volunteer’s Fingerless Gloves of Healing Hands Dungeon (Green)
Royal Volunteer’s Gauntlets of Aiming Hands Dungeon (Green)
Royal Volunteer’s Gauntlets of Maiming Hands Dungeon (Green)
Royal Volunteer’s Gloves of Scouting Hands Dungeon (Green)
Royal Volunteer’s Gloves of Striking Hands Dungeon (Green)
Royal Volunteer’s Beret of Healing Head Dungeon (Green)
Royal Volunteer’s Halfmask of Casting Head Dungeon (Green)
Royal Volunteer’s Helm of Fending Head Dungeon (Green)
Royal Volunteer’s Helm of Maiming Head Dungeon (Green)
Royal Volunteer’s Hood of Scouting Head Dungeon (Green)
Royal Volunteer’s Hood of Striking Head Dungeon (Green)
Royal Volunteer’s Scope of Aiming Head Dungeon (Green)
Royal Volunteer’s Choker of Aiming Necklace Dungeon (Green)
Royal Volunteer’s Choker of Casting Necklace Dungeon (Green)
Royal Volunteer’s Choker of Fending Necklace Dungeon (Green)
Royal Volunteer’s Choker of Healing Necklace Dungeon (Green)
Royal Volunteer’s Choker of Slaying Necklace Dungeon (Green)

Boss #3: Tokkapchi

Tokkapchi, a filthy seedkin slime / Final Fantasy XIV
Tokkapchi, a filthy seedkin slime

Mechanics

  • Mudsling: A single-target tankbuster attack on the primary target. Shield and heal through the damage.
  • Quickmire: A room-wide AoE attack from underground. Stand in the green pads to avoid.
  • Quagmire: Targeted circle AoEs on random players. The green pads will turn into poisonous puddles that apply a constant “Sludge” DoT and “Vulnerability Up” debuff for 50 seconds if a “Quagmire” AoE is dropped on top of them. Don’t stand in the green pads during this attack.
  • Mud Pie: The boss will summon a mud slime. Attack the mud slime to push it into a green pad away from the boss’ AoEs.
  • Corrupture (Mud Slime): After some time, the mud slime will use “Corrupture,” an AoE attack that changes its effect depending on how many times the mud slime was hit by an AoE.
    • 0 hits: A point-blank AoE attack.
    • 1 hit: A room-wide Aoe Attack.
    • 2 or more hits: A room-wide AoE attack that applies “Damage Down” for 12 seconds.
  • Feculent Flood: A room-wide frontal cone AoE.
  • Bog Bequest: A large donut AoE.
  • Muddy Dorpokkur: Additional mobs that spawn periodically. Kill these immediately to reduce incoming damage and AoEs.
  • Muddy Puddles (Muddy Dorpokkur): A point-blank AoE.

Rewards

  • 35 Allagan Tomestone of Poetics
  • Tokkapchi Triple Triad Card (not guaranteed)
Name Type Rarity
Royal Volunteer’s Coat of Scouting Body Dungeon (Green)
Royal Volunteer’s Coat of Striking Body Dungeon (Green)
Royal Volunteer’s Gambison of Aiming Body Dungeon (Green)
Royal Volunteer’s Gambison of Casting Body Dungeon (Green)
Royal Volunteer’s Gambison of Fending Body Dungeon (Green)
Royal Volunteer’s Gambison of Healing Body Dungeon (Green)
Royal Volunteer’s Gambison of Maiming Body Dungeon (Green)
Royal Volunteer’s Trousers of Aiming Legs Dungeon (Green)
Royal Volunteer’s Trousers of Casting Legs Dungeon (Green)
Royal Volunteer’s Trousers of Fending Legs Dungeon (Green)
Royal Volunteer’s Trousers of Healing Legs Dungeon (Green)
Royal Volunteer’s Trousers of Maiming Legs Dungeon (Green)
Royal Volunteer’s Trousers of Scouting Legs Dungeon (Green)
Royal Volunteer’s Trousers of Striking Legs Dungeon (Green)
From Mud Orchestrion Roll Orchestrion Roll Basic
Mudpie Minion Basic
Verdant Partition Other Basic

Extra Treasure Coffers

One of the extra treasure coffers inside the arboretum / Final Fantasy XIV
One of the extra treasure coffers inside the arboretum

Apart from the boss rewards, there are four treasure coffers located throughout the dungeon that you can open for more gear, crafting material, and crystal rewards. Here are their coordinates:

  • (X:9.9, Y:9.7)
  • (X:11.4, Y:9.1)
  • (X:14.9, Y:6.9)
  • (X:17.0, Y:5.6)

Marc Vista

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Marc is a casual FFXIV Summoner veteran, retired TF2 Soldier main, and professional communicator. He's also a huge fan of anime, Hololive, and the Golden State Warriors.

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