Butternutsquash (a variety of Cucurbita moschata), known in Australia and New Zealand as butternut pumpkin or gramma, is a type of winter squash that grows on a vine. Butternutsquash shell splitting also results from late harvesting. If the squash of other fruit prone to cracking is left on the vine too long, you may end up with splitting. During the summer and fall, a couple of my butternutsquash developed splits in the them, Most of the splits were around the top near about 2" below the stem... Butternutsquashsplitting. by Bill Goodwin (Mt. Vernon Wash. Usa). My butternutsquash have split and i dont know why. We did have one day of steady rain. Butternutsquashsplit ring. Discussion in 'Edible Gardening' started by Drahcir, .Butternutsquash plants not growing. Heavy rain or over enthusiastic irrigation is the most common reason for butternutsquashsplitting. This extra water signals to the squash that it should grow more. Learn how to make a nutritious ButternutSquash and Split Green Pea Soup with this easy tutorial. ButternutSquashSplitter. The easy-to-use butternutsquashsplitter can increase your production, and it is easy to maintain. Splitting or cracking of squash fruit, particularly butternut types...