Sugar Cane (Sometimes called Reeds, Papyrus or Bamboo) is a Vanilla plant that can be found on grass, dirt, and Sand as long as it is adjacent to Water on at least one side (Not including top and bottom). Sugar cane may grow to a maximum height of three blocks, but is occasionally found in new world generation up to seven blocks tall. Sugar Cane can be grown higher than the usual 3 blocks by using a Harvest Goddess Band. The player can place sugar cane on a block or on existing sugar cane blocks to make sugar cane of any height. In Tekkit, Sugar Cane is primarily used to craft Paper, Plantballs, and Blowguns. It is also used to make Sugar, a Vanilla item that is also used in some Tekkit recipes. Sugarcane may also be used in making Rum.
In Cross Breeding Sugar Canes are essential since they're the basis for a great many of other plants. Cross breeding them with each other and other plants can give you Wheat, Flowers, Melon, Pumpkins, Stickreed, Cocoa, more sugarcane and many other things.
In addition to being grown, Sugar Cane can also be crafted using UU-Matter.