These are useful, though sometimes dangerous, mutations produced by plants that can affect humans and humanoid mutants in many ways:
Purple: Heal some damage (1d6 in 1st Edition; 1d8 in 2nd Edition).
Blue: Heal all damage.
Green: Boosts Mental Strength for 1 (1st Edition) or 1 to 4 hours (2nd Edition).
Orange: Radioactive (in 1st Edition) or induces trance-like sleep for 1 to 4 hours (in 2nd Edition).
Orange-Yellow (in 1st Edition) or Golden (in 2nd Edition): Gives immunity to radiation for 1 to 4 hours.
Red-Orange (in 1st Edition) or Magenta (in 2nd Edition): Antidote for all poison.
Black: Gives immunity to Sonic Blast for 1 (1st Edition) or 1 to 8 hours (2nd Edition).
Berries appear seasonally (mostly in high summer) and all types lose potency within 1 to 20 days of picking.