
These images caught my eye as I was perusing the ol' Coroflot member gallery the other day, a table that is perhaps more art than design.

According to the designer, Ori Mishkal (liberally copyedited by yours truly):
l wanted to design an object which suggested a way to bring nature into the living space in an intimate way. ["Soil Table" is] constructed from a ready-made table, soil, [chickenwire] and ferns—I chose fern as it is known for its love of shade. [This inversion allows] one to see the 'underground growth' of the plants by placing them upside-down to grow.Unlike how we usually see plants, here, I [have] hidden the ferns and instead made the soil the most visible component. Not quite a table or a flowerpot, the "Soil table" is a bit of a disturbing object, [which might elicit] the strange feeling of plants on [one's lap] when sitting at the table.

Still, I seriously wonder whether it actually works—as in, if the fern can live like that.

Comments
I know people grow tomato plants upside down (search google for "upside down tomato plant" for lots of results, I guess it's supposed to improve your yield. So I presume other plants, perhaps ferns, could do the same. I'm thinking you might want something a little more than chicken wire to keep dirt of the floor.
I think it'd be quite interesting to see plants growing out of both sides.