This is based on my years of experience of care and cultivating these Tassel Ferns - the Huperzia species.
The ones that I currently care for:
And the one from the nursery: Huperzia goebellii
Here - I share the details:
I use Coconut chuck - chips which I had cut and placed them around the root ball.
Once a Day - Just keeping them lightly moist but not over-watered as it can cause crown rot.
The Medium must be fast draining by the next day.
To be placed in an indirect shaded area.
Too direct Sun can burn the foliage - Too shaded can cause plant stagnation and rot.
I use Osmocote as I find it is the best solution - other fertilizers tend to burn the plant.
Airy and good airy movement is good for the plant.
Huperzia is a sensitive plant and therefore good care is required.
Once it is established it is fairly easy to maintain in a long duration of time.