Ultra-rare albino redwood trees completely lack the green pigment chlorophyll, which they need to live (by photosynthesizing nutrients from light). These plants are literally vampires. They are pale (everwhite instead of evergreen), and they survive by sucking the life from other trees.
These vampires remain attached to the roots of their healthy, normal, parent trees (coastal redwoods can reproduce asexually by sprouting new shoots from roots or stumps), and survive by sucking energy from them. They can keep this up for a century. Historian Sandy Lyndon explained the phenomenon to KQED:
“Albinism is a genetic mutation that prevents cells from producing pigment. In humans and other animals, albinism is not necessarily such a big deal. But albino plants are unable to do the very thing that makes a plant a plant. Without chlorophyll, they can’t photosynthesize, meaning they can’t convert sunlight into energy. The only reason that albino redwoods survive at all is that they are connected at the root to a parent tree from which they will suck energy for their entire lives.”