Roses
Q.

Rose seeds

Zone Richmond, Ky. | Anonymous added on September 26, 2018 | Answered

How cold should rose seeds get for stratification?

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MichiganDot
Answered on September 27, 2018

Rose seeds need 10-12 weeks (or 6-10 depending on your source) at 40 degrees or colder before they will germinate. Here are two links for preparing seed and growing roses from seed.
https://www.gardeningknowhow.com/ornamental/flowers/roses/growing-roses-from-seed.htm
https://blog.thompson-morgan.com/how-to-grow-roses-from-seed/

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