Bhagavad Gita, Chapter 15, Verse 2

Below and above spread its branches, nourished by the Gunas; sense-objects are its buds; and below in the world of man stretch forth the roots, originating action.

This tree keeps growing here through something real and specific, the same three forces already named in the last chapter.

The guṇas aren't left behind once introduced, they're shown feeding this image directly, nourishing branches that spread both upward and downward. Real continuity links this chapter to what came right before it.