Carissa Holly with impure genetics
I have a batch of Carissa holly bushes planted about 20 years ago. They appeared to have some wild holly bushes with pointed leaves growing among them. I was just cutting them back and discovered that the wild hollies appear to be part of the Carissa plants!!!
I have some other Carissa hollies purchased at a different time that do not have the wild holly. I have noticed here in Atlanta that many Carissa Holly plantings have this same problem.
What is the story here? Is there a better way of phrasing this than "impure genetics"?
If my pic doesn't work, here is a direct link: http://i.imgur.com/mUOpuI3.jpg?1
You can see in the photo the ugly pointed leaves (with spots from spraying Roundup) and the new young leaves are standard Carissa leaves.