Opium is available in California usuaally moreso in october and november,but opium poppys can be legally grown "for ornamental purpose" and US companies will sell legally opium poppy seeds of variuos types to a person for a cheap price, and they are seeds that will grow,not treated with some chemical like store poppt seeds which are mostly all chemically treated to keep them from growing , plus theey are not always opium producing poppys anyway.However there are reliable legal good vendors online from the USA who sell a variety of opium poppys from Chinese opium poppy to persian blue opium poppy to afghan opium opppy seed that vary in color and size and yield but all have opium in them after they have grown and it is legal to grow opium poppys , in most all states as far as I know, for "ornamental purposes" aka to grow them for the nice beautiful flowers of varying colors that surround the poppy buld or pod , but it is illegal to harvest opium from the oppys , but if you have a place to grow them with some plants and flowers as well you can grow the poppys easily and harvest them easily without dtection,,you only have to "score" or cut grooves into the poppy pod or buld whatver you wanna call it, with a knife, vertical cuts,no too deep but deep enough to go through the outer layer of the poppy pod/buld so that it lets the opium latex/sap/whatver you wish to call it to drain out and harden on the outside of the poppy bulb.This cutting takes a very small amount of time for each poppy bulb ,and is done in late afternoon,when there is no chance of rain during the night ,the poppy is left overnight to let the opium liquid ooze out and it will be semi hardened by the next morning enough that it is a gummy resiny substanc ean dnot a liquid resiny substance.After the night pases and the next day after the sun has been up a hour of 2 or so, you go and take a blade or metal spoon or something and scarpe the opium resin/latex off that has hardended up to a semi solid or soft gummy resin and collect it from each poppt bulb that was scored(cut) the night before and take it and let it dry more (it will be a large % of water still at this point an dfrom there you can clean the opium resin/gum and dry it in an oven on very low heat or boil it in a big pot of water and add some slaked lime,the non opium alkaloids will seperate from the vegetable material in the resin which drops to the bottom of the pot og water,and the opium alkaloids float on the top of the water,you scoop these out and allow them to dry ,the longer the better(longer it drys the less water % in the opium = more potent opium by weight because of the water being less of a % of the opium the weight off the water is that has been died aka evaporated from the opium mean that water weight is gone leaving a smaller % of water and thereby the opium gum by weight has more weight that is the opium alkaloids and less that is water making it more potent by weight...