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Witcher Wiki
Secondary quest
"Greenhouse Effect"
Tw3 greenhouse effect
Details
Type
Secondary quest
Suggested level
27
Location(s)
south-southeast of Kaer Morhen, up in the hills
Region(s)
Kaer Morhen
Source
automatic
Reward
25 XP earned based on the Story and Swords! difficulty level

Greenhouse Effect is one of the quest in The Witcher 3: Wild Hunt. Up in the mountains, in the south-southeast of Kaer Morhen, Geralt can discover an long-forgotten rundown botanical garden, that seems to feature a very special micro-climate.

Journal entry[]

It turned out even the area around Kaer Morhen, a place which — one would think — Geralt knows by heart, can hide a great many interesting and undiscovered phenomena. Not far from the keep, Geralt came across an area where the weather differed remarkably from that of its surroundings. He decided to investigate what sort of forces were at work.
After a brief investigation, the witcher was able to conclude that the weather anomaly was the doing of one of the resident mages of Kaer Morhen, who had created a sort of outdoor greenhouse in which to cultivate the herbs used for the Trial of the Grasses. Though you might not know this, Geralt is quite the handyman, something which came in handy (pun unintended) at this time. He banged and nudged the broken magical apparatus and returned it to working order in no time. Before long, rare herbs were growing outside Kaer Morhen once again.

Walkthrough[]

  • Investigate the weather anomaly using your Witcher Senses.
  • Read the mage's letter.
  • Use the obelisks to restore the place's proper microclimate. (Igni x2, Aard x1)
  • Kill the chort.
  • Return to the site of the anomaly in a few days.

Map[]