Cucurbita maxima 90 days. Discus Bush Buttercup is the best full-sized buttercup on the market that is produced on a true bush. The plants are only about 3 feet across and bear up to four 3-pound, dark green/chocolatey fruit each. A great choice for small gardens. These squash have very small seed cavities and are chock-full of thick golden flesh that cooks up moderately dry and oh-so-sweet.