Alpine Clubmoss -
Glacial. It is an extremely slow grower; it can take up to 20 years for a new plant to fully mature from spores.
Very High. This is not for the casual gardener. It is notoriously difficult to transplant and extremely sensitive to dry soil. alpine clubmoss
"If you find yourself hiking in the high mountains, definitely keep an eye out for this little marvel. It looks like a cross between a miniature pine tree and a thick moss, hugging the ground to stay out of the wind. Seeing it in its natural habitat—usually moist, subalpine rocky slopes—is a real treat for any amateur botanist. It’s an ancient plant with a lineage going back millions of years, which gives it a legendary feel when you spot it." Gardener’s Performance Review Glacial
Since Alpine clubmoss ( Diphasiastrum alpinum ) is a rare wild plant rather than a commercial product, here are reviews from the perspective of a nature enthusiast, a gardener, and a conservationist. Nature Enthusiast’s Perspective This is not for the casual gardener
“They are low growing, creeping over the mountain soils... Alpine clubmoss, Fir clubmoss and Stag's-horn.” Facebook · Wicklow Mountains National Park