Ways to Propagate Sweet Gum Trees Gather the gumballs in early tumble prior to they open up. Put them inside of a tray and await them to open up and release their seeds, which normally requires a couple of 7 days. Fernanda B. - La Mirada, CA I love my https://masseyfergusonparts12357.blogsmine.com/33670921/how-much-you-need-to-expect-you-ll-pay-for-a-good-gum-tree