The Techny cedar is actually a clone made from the White cedar, originally found in Techny, Illinois – hence the name. This evergreen tree is a medium-growing tree that has dark green foliage. Each fall the Techny cedar will lose all of its growth from the previous year creating a nice mulch under the base of the tree. Over time, they can grow to be up to 30 ft tall and 15 ft wide. The Techny cedar is best used as a wind break, and is one of the hardier cedar varieties. For optimal growth, plant trees 10 ft apart due to their shallow root system.