The Growth of the Mandrakes and Revival
Harry Potter and the Chamber of SecretsThe Mandrakes in Herbology are nurtured to maturity to create the restorative draught that revives the petrified victims.
increasing
Bearing strength in each event
decreasing
Mandrake Planting

A Dangerous Crop
The Lesson
Professor Sprout teaches the second years how to repot Mandrakes. The plants are still young, but their cries can knock out a person. The class learns that Mandrakes are used to restore petrified people.
The Importance
Harry and his classmates help care for the Mandrakes, which will eventually be used to save Mrs. Norris and the other victims. The Mandrakes' growth becomes a race against time.
The Connection
This subplot ties into the main plot, as the Mandrakes are the key to reviving the petrified. Their slow growth creates tension, and their eventual maturity marks a turning point.
Mandrake Maturity

The Plants Grow Up
The Party
In March, the Mandrakes throw a loud party, trying to move into each other's pots. Professor Sprout announces they are nearly mature and will soon be ready for cutting.
The Hope
This news brings hope that the petrified victims will be revived. The Mandrakes' progress is a countdown to the resolution of the attacks.
The Delay
However, the Mandrakes are not yet ready when Hermione and Penelope are attacked. The delay adds urgency and forces Harry and Ron to act before the next victim dies.
The Mandrake Draught Administered

The Cure
The Preparation
After the Chamber is closed, the Mandrakes are finally ready. Professor Sprout prepares the Mandrake Restorative Draught.
The Revival
The draught is given to Mrs. Norris, Colin, Justin, Nick, Hermione, and Penelope. They all wake up, healthy and recovered. The petrification is reversed.
The Celebrations
The revival coincides with the end-of-year feast, adding to the joy. The Mandrakes' role is a reminder that even the most mundane magic can be vital.
September, first Herbology class
March, when the Mandrakes start moving
the night after the Chamber is closed, late May