All in aloe mechanics.

Ironman player with only the aloe left for rode drag. I need 2 aloes for drag and analyze but the wiki is super unclear. It says to wait till stage 11 to get 2 but also says that at stage 4 the multiplier is 2x. So do I need to wait till stage 11 or can I harvest at 4? Can anyone who has grown aloe let me know pls.