Begonia strigillosa is a beautiful Central American rhizomatous species that makes for a nice 8-10" mound of highly patterned foliage. This one seems easy but some growers report that it requires high humidity. If that's the case, it would make this another one that's a good for terrariums. Mine's been growing as a greenhouse subject and in that sense it has been doing just fine - so its not a plant requiring a closed super-humid type environment.
These are strong, cutting-grown plants, currently in 2 1/2" pots. Fairly easy but is probably prefers reasonably high humidity.
View Terrarium / Begonia Culture Sheet
|Int - Warm
|Low - Medium