Whether you’re new to growing marijuana or have been cultivating for years, it’s important for you to accurately determine the sex of your plant. Sexing marijuana seeds can sound daunting if you’ve never done it before, so for new growers, let’s start with some basic information and we can familiarize you with the topic.
Cannabis plants grown from non-feminized seeds will grow to be either a male or female plant. In a pack of 10 seeds, you can expect to have five females and five males, as seeds tend to germinate in a 50-50 male-to-female ratio.
Typically, you’d want to cultivate female plants as they are the ones that produce the kind of flowers we smoke. Male plants are used by growers who wish to crossbreed different strains.
Early sexing of cannabis plants can be done by visual inspection. If you’ve been growing the same strain and all of the seeds are from one pack, then you may have noticed that some plants start growing taller than others. The smaller plants in this case are more likely to be female, and the taller ones more likely to be male. Male plants also tend to pre-flower before females, so if you have taller plants that are flowering before the smaller ones, then you have a pretty good indication which plants are male and which ones are female. These are good methods of how to tell if your plant is male or female early on in your growing stage.
A foolproof method to get clearer answers to your question of how to sex marijuana plants is through light manipulation. Plants are quick to reveal their sex when exposed to a long night light cycle of 12 on, 12 off for about a week. However, before trying this light manipulation method, keep in mind that indica dominant plants may not return to their vegetative phase. This method is best reserved for grow rooms, as plants will need to be covered or brought indoors if you are trying this outside.
If you have more questions on how to sex pot plants, don’t be afraid to let us know your questions in the comments. We’ll do our best to help you out and guide you down the path to some beautiful flowers!