SAXIFRAGA:
 
Pot size 13cm
approx height 8-10cm
 
This plant is often found flowering on rockeries in early spring and is safe to be  added to the tortoise diet or to the enclosure without any harm.  If you are growing it inside your tortoise enclosure, however, steps should be taken to restrict access or the plant will be eaten to the ground!!
Will need protecting from the frost