Big Max is a large variety of pumpkin of the species Cucurbita maxima that can exceed 100 pounds (45 kg) and 20 in (510 mm) in diameter under ideal growing conditions. They are often bright orange in color, with fine-grained, yellow-orange flesh. The skin, deeply ribbed and slightly roughened, can grow to be 3 to 4 in (76 to 102 mm) thick, making them favorable for storage.The flesh has been described as good for canning and freezing. However, their size often makes utilizing them for culinary uses cumbersome, and they lack the flavor and texture present in smaller pumpkin varieties.
The variety was hybridized for its size during the early 1960s. Specimens as large as 300 pounds have been grown. Individual fruits are round to slightly flattened.