Growing Cloudberries

[jcguarneri]

@steveb4 @ZinHead
I believe Rubus need an acid scarification as well as cold.

Rubus Breeding

I use 30% sulfuric acid and had them germinate at 15 minutes. I may increase that to 20 minutes, but 3 hours seems way excessive. It has been my experience that most Rubus seeds only last a short time. I store mine in the berry itself i.e. I don’t clean the fruit of seeds till I’m ready to start them. You can store Rubus long term by freezing, must be dry! So most seeds you buy will be dead. The best way to practice is take some fresh brambles and remove seed, use those right away. If you do…