'Elite' and 'Super-Elite' Sitka spruce (Picea sitchensis) have been specifically developed at Christie-Elite to grow high-quality timber, fast.

Selective breeding, over multiple generations, has enhanced particular genetic traits, growth rate, stem straightness and density. A genetically improved crop will result in a better yield class.

The seed is produced in a seed-orchard composed of parent trees chosen for their genetic superiority. Due to natural cross-pollination, this, in turn, increases the genetic variation in the seeds, resulting in better genetic traits such as less branching.