Certified GKH Gardening Expert
They need to go through a stratification period first, or simulated cold period. Here is how:
https://www.gardeningknowhow.com/ornamental/flowers/roses/growing-roses-from-seed.htm
See this article please = https://www.gardeningknowhow.com/ornamental/flowers/roses/growing-roses-from-seed.htm
Let me know if you have more questions.
Check out this article please: https://www.gardeningknowhow.com/ornamental/flowers/roses/growing-roses-from-seed.htm
Here is a link to an article on this subject for you: https://www.gardeningknowhow.com/ornamental/flowers/roses/growing-roses-from-seed.htm
Here is a link to an article I wrote on this subject for you: https://www.gardeningknowhow.com/ornamental/flowers/roses/growing-roses-from-seed.htm