Blue Clubmoss (Diphasiastrum Tristachyum) is a perennial fern in the Lycopodiaceae family with moderate care difficulty. It requires moderate watering and partial shade or dappled_shade light in USDA hardiness zones 3-7. This plant is safe for cats and dogs.

Diphasiastrum tristachyum is a clubmoss species native to North America, known for its distinctive blue-green branches and preference for dry, sandy soils in coniferous forests.