The How to Grow More Vegetables book by John Jeavons has a very extensive chart of how many seeds there are in an ounce for many different crops. A number of neighbors will get me to come and id something odd in their yard. I am happy to do it and even to dig it up if it's something interesting and they don't want it. Great way to get wildflowers that would be otherwise mowed. But the saddest id I have made to date was for new neighbors who wanted to remove nearly all of the previous owners gardening and landscaping(most plants went to good homes). They wanted to know what the very strange plant with the green seed pods on it was. Envisioning a new to me wild flower, I go to the yard and look at their strange plant. I could identify it immediately, but how to tell them... their strange plant was a tomato with green tomatoes hanging off of it. Sharon firstname.lastname@example.org PS My email has been arriving/not arriving in no pattern that I can figure out. So if you email me and don't get an answer within two days, please send the post again.