They are called kokedamak or moss balls..
They are actually moss wrap around a ball of earth and we just need to keep them damp so that the moss will growinto the earth balls.
Then in the center of the moss ball there is a small hold where you can plant in any type of small flowers plant or any green plants,then you just need to add abit of soil into that small hole to cover it up.
You can place the moss ball on a small garden plate and water them as to keep them moist.I bought several of them and place them in various parts of my home.
They are very beautiful as you can see from them the second photo above..
By looking at them,I feel they make us have a cooling feeling..against the summer heat...
Don't you thing so??? Hehehehe...

The leaves are a bit round shape compare wit our 
