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purple fruitNot being able to see the fruit, we can not identify it, and therefore would advise not eating it. We haven't heard of yellow squash turning purple later in the season (although we suppose it is possible if it had a cultural or pest/disease problem). It might be that you have an heirloom type that exhibits this trait, although a particular cultivar doesn't come to mind at the moment. Could it be possible that the original plant has died back and a volunteer is now growing in its place? It could be an edible vegetable, such as eggplant, but it may also be an inedible weed. To be safe--don't eat it! You might want to bring a sample to your local Cooperative Extension (if in the USA) for identification. To find your Extension, go to: http://www.almanac.com/content/cooperative-extension-services Hope this helps!

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