Show the highlight form to show an effect in the list of ingredients in blue. Alternatively click on an ingredient and other ingredients with the same effect will be shown in brown. A green colour indicates that the effect is present in 2 ingredients and it will therefore form an effect in your potion or poison.
The values in brackets are the amount of the ingredient harvested from a plot of fertile soil. This number is doubled if the Alchemy perk Green Thumb is used in your build.