Herbology

First Year

 * Ginger Root - Ginger Root

Second Year

 * Mandrakes - Stewed Mandrake (Requires Earmuffs)
 * Wolfsbane - Sprig of Wolfsbane

Third Year

 * Mimbulus Mimbletonia - Stinksap

Fourth Year

 * Gillyweed - Gillyweed

Fifth Year

 * Squill - Squill Bulb

Sixth Year

 * Venomous Tentacula - Chizpurfle Carapace (Requires knowing !lumos)