Give them more time than this to germinate. Just because you sowed all the seeds at the same time doesn't mean that they will germinate at the same time.
The seeds have "minds of their own" and will germinate when they are ready to.

It never fails with my tomato seeds that some of them will germinate very quickly and the rest will just take their "sweet time" and germinate when they want. I've had some of the same variety germinate 6 weeks after the first ones did.

Why you wonder? Good question, only one I got is it decided to be a "late one and come along when it felt like it."

All my tomato seeds are from tomatoes that I grew and saved seeds from, each variety saved from the same tomato at the same time.

Only mother nature has the answers and after 9 years of WS, she still isn't talking to me about why she does the things she does.

Be patient, crazy weather all over the country, those seed will germinate when they are ready,

Fran

Don't lose hope people. I was concerned but found out yesterday, most of them are sprouting.