The cultivation of THC seeds in Germany is not permitted. Not yet. So until the government gives home growing the go-ahead, you need to store your THC seeds properly. Otherwise, the germination rate will drop or the seeds will become completely unusable. THC seeds can be stored in a sealable container in the fridge for up to four years. The three most important conditions are cool, dark and dry. Temperatures above 10 °C should be avoided in any case to prevent premature germination of the seeds.