How can I get the white color back in my snow on the mountain

Question

My garden area gets morning sun with afternoon shade it’s beside our home.

Answer 1

There are a couple of plants referred to as snow on the mountain and I've included information on both. If you have the euphorbia, it is an annual that reseeds and the new plants next year will probably look normal.

The one also called Bishop's Weed is hardy to zone 3 and is a groundcover. You can pinch out the green ones, which will take over if you don't.

http://www.missouribotanicalgarden.org/PlantFinder/PlantFinderDetails.aspx?taxonid=280105
https://www.gardeningknowhow.com/ornamental/groundcover/snow-on-the-mountain/bishops-weed-reversion.htm