I wonder if Ortho makes such a product.

Don't know - ive got the same thing, ive had some small ones mowed down by rabbits, or died to the roots over the winter, and now i have plethora of bayberry suckers. I guess thats how they can control beach erosion, but ive got them in clay soil and they haven't grown very fast.

Thanks for the warning! Myrica pensylvanica is the plant I was planning to use in a difficult shady spot in my backyard. Think I'll go with an oakleaf hydrangea insead.