We haven't heard of a commercially available zucchini/spaghetti squash combination--is there a variety name? As to when to harvest, if you don't have a seed packet/seed catalog to refer to, then perhaps look for signs in which both zucchinis and spaghetti squashes are ready to pick.
Zucchinis are best picked at the immature stage. Pick elongated types when they are about 6 to 8 inches long and about 1-1/2 to 3 inches wide. The larger they are, the tougher they get; picking zucchinis will encourage more to develop. Round zucchini types, such as 'Eight Ball', should be harvested when they are the size of a baseball, or a little smaller.
There are also other squashes that appear like a cross between a zucchini and spaghetti squash. Example is 'Tatume', also called Mexican zucchini. It is green with spots, and is best picked when it is about the size of a baseball and treated as a summer squash. It can grow larger, however, and picked later as a winter squash.
Spaghetti squash is harvested when mature, like a winter squash. The color will change and deepen; color varies with variety, but many turn to a deep yellow. Look for a rich color, and a hard rind. Your fingernail should not be able to make a dent in the rind.
If you think that your squash is a summer-type squash, then we'd suggest harvesting it when it is small/immature, like zucchini. If, however, you think it is a winter squash, allow it to grow fully and the rind to harden.
We haven't heard of a commercially available zucchini/spaghetti squash combination--is there a variety name? As to when to harvest, if you don't have a seed packet/seed catalog to refer to, then perhaps look for signs in which both zucchinis and spaghetti squashes are ready to pick.
Zucchinis are best picked at the immature stage. Pick elongated types when they are about 6 to 8 inches long and about 1-1/2 to 3 inches wide. The larger they are, the tougher they get; picking zucchinis will encourage more to develop. Round zucchini types, such as 'Eight Ball', should be harvested when they are the size of a baseball, or a little smaller.
There are also other squashes that appear like a cross between a zucchini and spaghetti squash. Example is 'Tatume', also called Mexican zucchini. It is green with spots, and is best picked when it is about the size of a baseball and treated as a summer squash. It can grow larger, however, and picked later as a winter squash.
Spaghetti squash is harvested when mature, like a winter squash. The color will change and deepen; color varies with variety, but many turn to a deep yellow. Look for a rich color, and a hard rind. Your fingernail should not be able to make a dent in the rind.
If you think that your squash is a summer-type squash, then we'd suggest harvesting it when it is small/immature, like zucchini. If, however, you think it is a winter squash, allow it to grow fully and the rind to harden.