I posted this link on the 'using a grinder' thread, and just now, looking at it again, thought it worth posting on its own. It gives the per cent water content of many fruits and vegetables. This list surprises me to the point where I'm actually a bit skeptical (hard to imagine broccoli is 91% water). Did they compare the fresh weight with the weight of the ash?

In general, though, and taking into account that peels, cores and seeds would have less % water, this info is a good reminder that produce will rot and disappear in a pile without effort on our part besides balancing them with carbons/browns.

Odd that beans are missing from the list.

Here is a link that might be useful: water content fruits vegetables