they look alike and if you grow what they call regulars (non feminized) you will get a 50/50 chance of males and females. There is a process using C.S. that they spray on the female plant to change it to male then the pollen off of that plant is used to pollinate a female those seeds off that plant will be what they call feminized which will grow female plants almost all of the time. If you are able to purchase seeds from here (I.L.G.M.) they will replace seeds that don’t. Here is a thread that is about this subject.