Grow some Tomorrowspore Ortcaps
From Fallen London Wiki
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From: Vertiginous Horticulture
Striking black-and-white mushrooms that stand together in tall clusters, like the pinion feathers of a raven.
Locked with 
Rooftop Growth 1-7 (You have no horticultural projects in progress.)
Success
Planted
A Dreamy Mycologist hands you a small vial of spores. "They grow where ravens dream, […] where tomorrow and yesterday meet." His eyes are glassy and distant.
[…] "Been honey-mazed for months, poor thing. […] these prefer high places – turrets, specifically."[Find the rest of the story at https://www.fallenlondon.com]
You are attempting to grow Tomorrowspore Ortcaps. (Sets 
Rooftop Growth: to 7 - Tomorrowspore Ortcaps)
Your horticultural project is a fungus. (Sets 
Rooftop Growth, Classification: to 2 - Fungi)
Your current project prefers the darkness. (Sets 
Rooftop Growth, Light Preference: to 3 - Darkness)
This project will be a difficult and recalcitrant little thing. (Sets Rooftop Growth, Difficulty: to 3 - A recalcitrant little thing)
