The Australian Sword Fern has lush, lacy foliage with bright green fronds. It looks great planted in a terrarium as it adds height and gives off rainforest vibes. Its also an Australian native plant.
It loves humidity and needs to be kept moist so this is a perfect choice for closed terrariums.
Add a statement fern to your glass!
Bonus points - It's also nontoxic to pets so it's a great choice if you have furbabies.