Popular garden flower (8)

I believe the answer is:

geranium

(Other definitions for geranium that I've seen before include "Flower - cranesbill" , "Cranesbill plant" , "Cultivated cranesbill" , "Cultivated flower often seen in window box" , "Cultivated pelargonium" .)

I've seen this clue in The Wall Street Journal.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.