Sukkot is the
harvest festival.
It is sometimes
referred to as Chag Ha''Asif, the Festival of the Ingathering (harvesting).
On Sukkot, we give thanks for a bountiful harvest.
According to Jewish law, a sukkah must have at least three walls. A sukkah may be any size, so long as it is large enough for you to fulfill the commandment of dwelling in it.
The roof of the sukkah must be made of material
referred to as
sekhakh, which means "covering." Sekhakh must be something that grew from the ground and was cut off, such as tree branches, corn stalks, bamboo reeds, sticks, or two-by-fours.
Sekhakh should be sparse and left loose enough so that the stars can be seen. It is common practice, and great family fun, to decorate the sukkah.