Q.Lavender Plant Has A “baby” A Different Color? How Do I Avoid?
On the left is the existing lavender plant called Violet Intrigue that I have had for about three years. Last year I had an offshoot on the purple flowered plant with a section of white/very pale lavender (similar to this picture). I dug up and transplanted to the right as you can see. This year, it did it again. Am I not getting it all when transplanting or did it have another “baby”? Common? Thanks!

Certified GKH Gardening Expert
This could be a "sport" or a plant mutation. Here is more:
https://www.gardeningknowhow.com/garden-how-to/info/plant-sport-mutations.htm