You can find most strains in a feminized version or if you want to make your own feminized seeds you can. All it is is a colloidal silver spray that causes the female plant area you spray to grow pollen sacks. So say you got 1 female "OG pussy waffle" and you like the pheno, and want to keep it, spray a few branches with the spray and only those branches will get pollen sacks and you can develop seeds from their. So don't let regular seeds fool you. Also with regular seeds you can get male genetics, which in many cases can be good if you want to breed... But if not I would say just pick any seeds you want and if they happen to be regular, get the colloidal silver spray so you can make feminised seeds of it and never have to look back.