The result of their evil deeds is spoken of as fruit which grew from those practices. Alternate translation: "I will punish you as you deserve because of the things you have done" (See: [[rc://en/ta/man/translate/figs-metaphor]])
Possible meanings are 1) this is a metaphor for the columns of wood that supported the palace or 2) these are literal patches of brush. (See: [[rc://en/ta/man/translate/figs-metaphor]])