It can happen that some seeds require longer time to germinate or do not germinate at all as there are many factors which are responsible for germination and the biological processes that occur are complex and cannot be fully controlled. We test our seeds for germination and quality regularly.When germinating seeds, we recommend to use the transparent germination caps to simulate a higher humidity.Some seeds require light to germinate, others require darkness to germinate. When a plant type requires light to germinate, use the transparent germination caps to simulate a higher humidity, when a plant type requires darkness, use the intransparent caps to block light from shining on the seed.If the seeds have not germinated after 5 weeks, we recommend to dispose of the seeds on the biodegradable sponge, wash the sponge and sow new seeds on the sponge again to start a new germination process.