Susan's Garden Cake

I brought this chocolate mayonnaise cake to the potluck which took place after our exercise class, to say goodbye until next fall when the classes resume. As it happens, it's also our exercise teacher Susan's birthday, so we had a little celebration.
Susan is an avid gardener so I made her a garden cake. The veggies are of marzipan, the dirt out of chocolate cookie crumbs, and the sunflower is a chocolate lollipop.