Fragaria vesca (both yellow wonder and Fresca are this type) , Sow at Max. 5ºC (41ºF), germination irregular, often several months

Thanks Morz, I planted the seeds on Jan 9 and some of them germinated within a week. I had finally given up on the rest so I planted tomato seeds in those cells and ordered more strawberry seeds. Well, after I posted this today I was admiring my newly sprouted tomato seedlings and noticed some cells have other seedlings growing in them. I do believe that I might get a few more strawberry plants after all.

I'll give the newly planted seeds more time before I give up on them. Patience.

Try sowing them in sphagnum peat. Just surface sow them & keep the media moist. I am involved in a strawberry study, & have germinated over 26 varieties in sphagnum. Most varieties germinated without stratification.