Female Seeds, as the brand name may suggest, focus predominately on feminised seeds. They have been working tirelessly since 2003 to ensure the stability and reliability of all of their plants and, since when the feminised seed hit the market not long before they were rather unreliable, this is definitely a brand that you can trust with your feminised seeds.
The feminised seed is a marvel of genetic engineering since, put basically, these seeds will only grow female plants. This is useful to anyone growing privately or in bulk as it saves a lot of time and space in your crop, generally just making your life a whole lot easier.
Since no male plants are produced there is no need to buy twice as many seeds as the number of desired plants, since usually roughly half of them would end up being male. They can be left to their own devices without you constantly having to watch for male plants popping up and consequently the efficiency of your cop will sky rocket.
If you wish to use feminised plants but are desperate to cultivate your own seeds in the future then fear not. If persuaded correctly the female plant can grow a couple of male pods which contain the necessary pollen for fertilizing the females and create your own feminised seeds. Even though this can be a simpler process with regular seeds the uniformity and maintained quality of your crop will be higher and certainly worth the tiny bit of extra effort.
If you are going to go to any brand for feminised seeds I would certainly recommend Female Seeds. Feminised seeds are their bread and butter; it's what they do. They focus almost all of their extremely experienced breeding energy on their feminised plants so if you are picky about your seeds and their quality Female Seeds are the company to go to. Excellent quality at reasonable prices.