45 days — The bush-type plants of 'Grey' zucchini produce are medium-green colored flecked with gray fruit that are known for remaining . It starts developing fruit quickly and if you harvest regularly, are productive. Produces heavy yields of straight, 6-12"L, smooth, mottled medium green-gray fruits with silvery speckles. Best harvested at 5-7"L. Fine quality flesh, delicious flavor, small seeds. Very heat resistant, adaptive and thrive in dry arid regions.