Q.Low growing ground cover
Looking for low growing ground cover for patio perimeter.

Certified GKH Gardening Expert
There are plenty to choose from. Some examples of low growing ground covers are Alyssum, ornamental Oxalis, Lamium species, and herbs like thyme. Here are some more ideas:
https://www.gardeningknowhow.com/special/xeriscape/drought-tolerant-ground-covers.htm
https://www.gardeningknowhow.com/special/shade/ground-covers-for-shade.htm
https://www.gardeningknowhow.com/ornamental/flowers/alyssum/growing-sweet-alyssum.htm