In an effort to keep her mind occupied, Twilight Sparkle decides to delve once again into the grand mysteries of Pinkie Pie. This time, Twilight's focus is on her claims of growing up on a rock farm: like so many things related to Pinkie Pie, the idea that somepony could grow rocks as an agricultural product makes absolutely no sense. However, the investigation eventually leads Twilight to a rather... surprising discovery.

This is the first story in The Petriculture Cycle.

Artwork by Page Turner. Now with a TV Tropes page.

Misunderstandings abound as a simple letter from Princess Celestia to Twilight Sparkle creates chaos.

This story has a prequel.

Featured on Equestria Daily.
Original "Sad Celestia" draft

Can a utopian paradise that preaches love and tolerance really make ponies happy? Does contentment really lie in free universal healthcare and open government?

Twilight Sparkle is determined to resist this happy world on a matter of principle, and finds herself sneaking off with a mare called Trixie to hate and loathe each other in secret.

Will their hate-nest go undetected? Or will they be forced to face the dangers of the Ministry of Love and the mysterious Room 101?

Twilight ventures out into the mountains to see a once-in-a-lifetime event. Disappointed by her friends not coming with her, Twilight crosses paths with a kindred spirit.

My name is Canvas. I remember because I wrote it in the corner of the white box. It takes twelve steps to get from the cot to the wall. And the lights hurt my eyes.

(Note: The story isn't in color because I decided to try this without the gimmick! But I still recommend reading the GDocs version.)

Twilight Sparkle is a gifted student and scholar. When she attempts to harness her creative side by writing a science-themed sensual romance novel, however, things rapidly get out of hoof. Can her friends stage an intervention before she humiliates herself (and them) at a prestigious literature recital?

No. No, they cannot.

In a world full of magic, mere words can pose a deadly threat. When simply reading a sign can instantly infect the unwary, and cases start to turn up all around Ponyville, Twilight Sparkle casts the only spell she can find that can give her the time she needs to find the cause of the plague. But then she has to figure out how to stop the epidemic... without being able to read.

Editing provided by Spabble
If you like this, try Rainbow Typhoon
Audiobook on YouTube and for download on SoundCloud
Spanish version translated by MIkimoco
Russian version

On secret assignment from Princess Celestia herself, Twilight investigates a powerful magical artifact for clues to the mystery of Luna's transformation in the evil Nightmare Moon. Incautious use of the artifact sends Twilight hurtling back in time. Can Twilight discover what caused Luna's transformation? And will she ever make it home again?

Kickass cover art used with permission from Bitz.
http://allthebitz.tumblr.com/