The flame seedless is a vigorous, heavy-bearing table grape cultivar well in storage. It is a hybrid of Thompson, cardinal and several other vitis vinifera cultivars. It produces large clusters of medium-large red grapes with a sweet flavor. Flame seedless requires a long growing season. As such, the plants fare poorly in cool, damp zones. However, its good qualities, especially seedlessness, Sweetness, and long shelf life, make it one of the most heavily farmed table grapes. The flame seedless was first introduced in the 1970s. For a flame seedless to be called good quality, it must be plump, well colored, and firmly attached to the stem. The grapes are usually picked ripe, as they do not ripen after harvest.