From a fellow grower: So I was harvesting my plants, when cutting it down I noticed, and I have never seen this before, but the big stem all the way at the top it was totally hollow it was like a straw and it was like this in a lot of areas. Any reason why this would happen?
Totally hollow = totally normal.
Some growers get really happy to see this as it may be a sign of a potent harvest. I am not sure how many others have heard this…