I would have tend to disagree with the above comment regarding their seeds having a HIGH germination rate ... at least with some. Have been very disappointed with the acer, clematis and hollyhock seeds in which I have recently received. Upon close inspection many appear to have been harvested immature with ever so many NOT containing viable seed! I had soaked in water (for a few hours) and VERY CAREFULLY removed the seed coats from the acer mandschuricum and clematis Lake Baikal only to find they were completely void of any seed! ... and at best contained only a few immature and very shrivled up seed coats. Last year the hollyhocks "Fiesta Time" germinated most poorly BUT, fortunatly did get two plants which when bloomed were totally STUNNING!
I'm a gardener of much experience and can say for certain these seeds in which I have received were definitely duds! ... and shall be contacting them regarding this matter.
On the other hand they do have many interesting and unusal seed varieties! And because of this will be giving them another try and hoping for better things! Terry