grows all year round in south fl, getting pretty big, how do I thin
Run your fingers through the fountain grass like you run your hands through hair. As you do that, prune the blades close to the ground (about 6 to 8") to thin out the plant in the spring.
Our fountain grass is taking over the garden. How do I split it to give to friends?
These article should help:
https://www.gardeningknowhow.com/ornamental/foliage/ornamental-grass/dividing-ornamental-grass.htm