why would my creeping myrtle die
Was full of blooms 1 week then dried up. Was watered.
Creeping myrtle -- also known as periwinkle and vinca minor -- is an extremely tough plant, one of those that will grow where nothing else will. One thing that will bring it down is too much water. Here's some growing information: https://www.gardeningknowhow.com/ornamental/groundcover/periwinkle/growing-periwinkle.htm
It is susceptible to some disease, which is probably what got yours: http://www.clemson.edu/extension/hgic/pests/plant_pests/flowers/hgic2108.html