Stratification of teas or noisette roses

Technique Stratification & Germination
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http://bulbnrose.x10.mx/Roses/breeding/RisleySprout1958.html
Risley (1958) reported on seedlings from Skinner’s Rambler pollinated by a wide range of pollen parents. Seedlings from ‘Max Graf’ pollen began germinating in 83 days, while those from ‘Queen of the Lakes’ waited 173.
I think that part of the differences involved cold-tolerance. Some roses grow happily in cold weather, while others need heat to get going.

In fact, that’s one of the reasons that early Pernetianas can suffer from frost damage. They are so quick to sprout in the Spring that they get zapped by early frosts.
Karl

1 Like
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Thank you Karl. That’s rather unexpected. And requires a lot more thought than just shoving everybody in the fridge, and saying “Have a nice nap, I’ll see you in 3 months” :face_with_hand_over_mouth:

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Thanks everyone for information. My update: this year I did not have any germinations from my tea rose (seed parent), but in past years I had some germinations using my ordinary scheme with a fridge (like all others non-teas), but just not too many.