Due to a wide variety of reasons such as growing methods and gardeners knowledge levels and the care provided when it comes to growing we are unable to offer such guarantees. Some seeds that we carry are relatively easy to grow while others can be more challenging and extra steps are required to germinate the seeds successfully. What we suggest is before sowing your seeds please do some research on them, on the best ways to germinate the specific seeds you have purchased.  We do however guarantee that our seeds are viable at the time of purchase and we do provide growing instructions with every order.  Most of our seeds have a 85-90% germination rate, if not higher, some near 100%. We also put extra seeds in with every order for our customers. If customers want to learn more about germinating specific seeds and garden plants and the care required we urge you to some more research on the Internet. In today's age we have a ton of information readily available on the Internet using Google that will have everything you're looking for. Whether you like reading or watching videos, they'll be tons of gardening topics for you to learn from for all seeds. Please do some research before planting. In the future we will be doing more gardening topics and frequently asked questions on our blog to provide you more information that you may be looking for.