洪: Bountiful blessings as vast as the heavens. This phrase denotes a fortune as immense as the sky, often symbolizing auspiciousness, well-being, and prosperity.
棵: "Ke" (花棵, 棵秆), a measure word used for plants.
Meaning: The character '洪' signifies vastness and grandeur, while '棵' symbolizes vitality and growth.