Ummm could be as soon as week 3. I donât know why youâre wanting to risk it if youâre gonna cut it down anyway? Or are you waiting to harvest pollen? If so Iâd just move it to a different area or outside for a few days..
Once you have sacs like that, you can kill it off and they will open as the plant dies and release that pollen too.
This is all assuming youâre trying to harvest pollen. If not, Iâd kill it off asap