No..its not too late.

I do wonder where you are getting them from???

I would wait till the summer and get some Ontario fruit stuff that way you will have a better chance of getting a hardier plant.
make up a marked plot and plant directly into the soil after you have eaten the entire basket and wait for spring to roll around.
glenn

Hey frank..... I got them from superstore a canadian chain of grocery store. They are tree ripe yellow peaches from chile. They are disgusting lol. Just look treated for slow ripening or were frozen. Still going to use the pits.

Glenn... that is always my intention. I unfortunately missed the season last year. They arent supposed to be hardy here so I need as many as I can get for trials.

It would be nice if some others would post some pics and updates on their seedling "stuff". I will post some pics of some other seedling trees I have growing here. I have lots of space so there are various seedlings of peach, plum apricot, apple etc. A good number produce fantastic fruit while others not so fantastic, but in any event they have proven to be hardy here so they get to stay:)
I encourage anyone with the room and patience to grow some seed out.....you may stumble on a real gem!
I posted a link of a thread from a couple of years ago. They produced some fantastic fruit again last year and hoping for some again this year. It was a real test winter this year, really long cold then big warm up then really cold .......still really cold now!
http://forums2.gardenweb.com/forums/load/fruit/msg0820041119336.html