Q.What Is This ??
I have an abundant of these beautiful greens, down slope of the compost bin.Please advise on whether its edible, toxic or ???THANKS

Certified GKH Gardening Expert
That is a type of Rumex, or Sorrel
There are many types, and most are edible when young, though some are not palatable.
Here are some articels that will help:
https://www.gardeningknowhow.com/edible/herbs/sorrel/sorrel-herb.htm
https://www.gardeningknowhow.com/edible/herbs/yellow-dock/curly-dock-control.htm
https://www.gardeningknowhow.com/edible/herbs/sorrel/different-types-of-sorrel.htm
https://www.gardeningknowhow.com/edible/herbs/sorrel/how-to-prepare-sorrel-plants.htm
https://www.gardeningknowhow.com/plant-problems/weeds/controlling-sorrel-weeds.htm