Eryngium (Sea Holly) Seeds

Good Morning all
I hope you have all had a lovely Christmas.
I have some Sea Holly Seeds which I am wanting to plant. I have been looking online at the best ways to do this and found a general idea. However, there is some conflicting information. I get that they need cold to germinate but some say cycles of cold heat, cold and heat others saying cold then heat. Is it that these are a faff to grow?
Have any of you grown Sea Holly from seed? If so have you got any ideas, methods or tips that have worked for you?
Thank you 😁
I hope you have all had a lovely Christmas.
I have some Sea Holly Seeds which I am wanting to plant. I have been looking online at the best ways to do this and found a general idea. However, there is some conflicting information. I get that they need cold to germinate but some say cycles of cold heat, cold and heat others saying cold then heat. Is it that these are a faff to grow?
Have any of you grown Sea Holly from seed? If so have you got any ideas, methods or tips that have worked for you?
Thank you 😁
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I sowed some 2 yrs ago around october - covered the seed with grit and left them in a sheltered spot outside.
Around March/April I saw the first seedlings, they started slowly, but grew well as it warmed up and flowered this year.
Wisdom is not putting it in a fruit salad.