Winter Vine.Also known as Japanese Pumpkin, the Kabocha squash is a popular Japanese winter squash that is very productive. It produces a hard dark-green exterior skin with a bright yellowish orange flesh with small seeds and is high in the antioxidant beta-carotene. This squash is known for its excellent sweet and nutty flavoring, making it perfect for roasting, steaming, stuffing, or pureeing.