I've had a couple. Can be a good thing. The Most Common Cannabis Mutations - RQS Blog Sent from my XT1093 using Tapatalk
The whorled trait "disappears" when the plant begins to mature.By harvest time, you can only tell the whorled plants from their normal sisters is by looking at the bottom branches. Your best bet for a larger harvest would be to keep it in veg as long as possible. Some folks claim that whorled plants tend to be male, but I have had both sexes show up.