My wife got the final say and now all my beds have sea shell as ground cover here in St Augustine. I will admit it looks great and makes the colors pop quite a bit on all her flowers.    what I am looking for direction on is fertilization. I’m theory the granular fertilizer should make its way down to the soil one spread on top of the shells, but I also can see that the natural cup shapes can probably keep plenty of that granular from making its way down to the plants with any regula