This is the first time I grew zucchini and I have about an eight inch one. Is it done? How do I know?
How Do You Know When Zucchini Is Done Growing?
Certified GKH Gardening Expert
Yes, that does sound like a good size to begin picking. These articles should help as well: https://www.gardeningknowhow.com/edible/vegetables/zucchini/growing-zucchini.htm