You should be ok. Check this out.

Here is a link that might be useful: Planting table

I'm in zone 4, but mine won't be going out for at least another month. Waaaay to wet around here. I think I planted mine the last half of May last year and still got a good harvest, so I'd think you would be fine.

It isn't too late. I planted some earlier potatoes, still haven't come up yet. I just planted 40+ pounds last week and I am going to be planting another 60+ pounds this week. We finally have nice weather.

Jay

I'm in 7a most likely south of you and planted my first two weeks ago. My next batch goes in tomorrow...

I haven't planted my potatoes yet, I'm in Indiana, zone 5. I have planted them as late as June 1, of course they did not produce early potatoes, but they did produce after everyone else's new potatoes were gone.

i just did mind Saturday. so i figure they will be ready around July if am right.