Which species is associated with the common name Weeping Giant Sequoia?

The Weeping Giant Sequoia is specifically associated with the cultivar Sequoiadendron giganteum 'Pendulum.' This cultivar is notable for its distinctive growth habit, which features drooping branches that create a dramatic weeping effect, setting it apart from the standard Giant Sequoia.

The botanical name Sequoiadendron giganteum refers to the species of the Giant Sequoia as a whole and does not specify the particular weeping form. Similarly, Sequoia sempervirens, commonly known as the coast redwood, is a different species altogether and does not exhibit the characteristic weeping growth habit. Pseudotsuga menziesii, or Douglas fir, is yet another unrelated species.

Therefore, the identification of Sequoiadendron giganteum 'Pendulum' as the Weeping Giant Sequoia precisely captures the unique attributes of this cultivar that make it easily recognizable and distinguishable within the broader category of giant sequoias.