A dark plant is any plant mutated or infected by dark eco. Most dark plants were known to infiltrate and spread at a fast rate, usually infecting other plants. Infected plants are characterized by the adoption of a dark purple complexion as well as growing unusually large. Dark plants are curable with high amounts of green eco, but if an entire patch is not cured, the remaining infected patch will spread and re-establish itself.
The Precursor LegacyEdit
The first dark plant seen in the series was the dark eco plant, a massive monstrosity that had tapped into some dark eco drums deep down in the Forbidden Jungle's temple. Its roots then spread through the temple and surrounding area, until it was killed by Jak. It is unknown why this plant did not appear like any other seen dark plants.
In Jak 3, Samos commissioned Jak to cure infected plants in Southern Haven Forest in the mission "Kill dark plants in forest", where he had to use the JET-Board to distribute green eco from local vents to restore the infected areas of land.