Hibiscus: new here, 1 by Leeuwtje

Leeuwtje wrote:
Hello,

My name is Jori and I am from the Netherlands. I am new here.
I love al those different kinds of hibiscus. I only have a very licht yellow one which goes into my heated greenhouse in the winter or maybe in my living room when it is still flowering.
Then I also have some coccineus and some palustris. And also something we call a newbiscus here. It's also hardy. But I don't know a scientific name for this plant. I put in an image of this one.

I would like to have more plants for my greenhouse with those magnific colors you all have.
Can some of you help me to get some seeds? I can give you some seeds in return but I still have to finish my list here. The most of them are hardy plants but I also have a nice collection of tropical plants. I fancy collecting them.

I hope you forgive when my typing is not right but as you understand this is not my spoken language.