<iframe width="580" height="385" src="https://www.youtube.com/embed/WdRvnlGzu0A?rel=0&modestbranding=1" frameborder="0" allowfullscreen></iframe> <br>Haven't you heard it for years...that coffee grounds and eggshells are beneficial to the soil in your garden? We asked P. Allen Smith for his thoughts on this age ... <br><a href="https://www.youtube.com/watch?v=WdRvnlGzu0A">source</a>