What is canavan disease? Canavan deteriorates the white matter (myelin) in the brain. White  matter is responsible for forming a protective coating around every  nerve in the brain and spinal cord tâ¦o ensure that nerve impulses  are properly transmitted from one part of the body to another.
Pruning Knock OutÂ® Roses. June 12th, 2013. Prune your rose bush in early spring, never in the fall and never in the winter. Check your rose bush from time to time as spring moves along and when you start to see new shoots growing from the canes on your rose bush, thatâs a good sign that it is time to prune.
Winter takes its toll on Colorado roses. The canes die back, leaving dead growth to prune in the spring. Untimely pruning can leave roses vulnerable to killing frosts. Wait until two weeks before the last average hard frost to prune. The last average frost date in Denver is May 10.