Is it grown by planting seed? How tall can it get?
Snow on the Mountain
Certified GKH Gardening Expert
These typically propagate by rhizome. the best way is to dig some of the roots up and plant portions of it. Dividing them will give you the best success with propagating these. They will grow roughly ankle-high. Here is an article with more information: https://www.gardeningknowhow.com/ornamental/groundcover/snow-on-the-mountain/snow-on-the-mountain-plant.htm