Zucchini is native to Central America and Mexico. It is grown throughout USA so lots of states grow zucchini.
georgia
Thailand grows the most fruit.
Brazil
usa
hungaria
brazil
China.
PAKISTAN
Ireland
Japan
Brazil
Portugal
Ah, I just did an experiment on that, and I know the answer ! Zucchinis are faster growers than marigolds. When I did my project, the size of the zucchini quadrupled the size of the marigolds in a matter of weeks. There is NO doubt in which one grows faster.