There are six classifications of hazardous herbs. When dealing with any dangerous magical plant, use dragonhide gloves & keep your wand close in case you need to cast a Shield Charm or strengthening charms.

Class A: Odorous 
This class can act on people, animals, & other plants by unleashing powdered or gas odors. Wear a mask, use the Bubble-Head Charm, or keep a wand at your side. Masks should have strengthening charms & filtering charms.

Level One: Most dangerous, powder/gas causes heavy breathing/death, Hagweed pollen, Mandrakes are an example
Level Two: Less dangerous, poison/powder/gas causes inflammation in the respiratory system, finds ways under your skin/eyes, Smogwood trees are an example
Level Three: Mildly dangerous, paralysis in arms/legs, keep antidotes close, confusion, deep sleep, spider flowers are an example

Class B: Physically Aggressive
This class can strangle, bite, cut, or pummel you. Flesh-eating plants such as Devil's Snare, Fanged Geranium, & Spiky Bushes are in this class. Use dragonhide gloves or the Shield Charm & keep dittany on hand.

Class C: Toxic
This class has four levels of toxicity; level four being highly dangerous, & level one is eaten raw. Most plants are somewhat toxic. Toxic plants can also be non-magical & wear dragonhide gloves.

Class D: Infectious
This class can cause a witch, wizard, or even animals to become infected with flus & viruses.

Class E: Burning
This class can cause burns & can give you frostbite.

Class F: Reactive
This class can cause explosions & poisonous smoke. They explode when in sunlight for more than three hours. Gunpowder Gloriosas are an example of reactive plants.

Fun Facts
⊱ Belladonna is an example of poisonous plants.
⊱ Venomous Tentacula is an example of venomous plants.
⊱ An example of toxic plants is the Coughagus Ivy.
⊱ Dragonhide gloves are useless when dealing with burning plants. They need to be handled by spells.