Hardy plants that are so easy to grow are Sansevieras, a family of succulents that are not only almost fail-proof but will actually even tolerate neglect. Given the right spot in the landscape or potted in a proportionate container, sansevieras are very useful to fit into any garden or interior.
On the right is the Sanseviera trifasciata, nicknamed the Snake plant or sometimes even more sinister, the Mother-in-law's Tongue. Not many people know that with enough space, this will grow waist
high or even a little more, making it a useful border plant.
There is a variegated version, equally if not even more popular (left). It has yellow borders that define the leaves' shapes, and gives it a flaming look. Recently, we've tried mixing both the plain and the striped into the same pot but it is taking quite some time to make it look natural and casual.
There are also dwarf versions of both, pictured below.