I'm in zone 4 and our last frost date is listed as May 15th.

When should I put my cannas I started in pots in the house in the =
ground?

I've put them out in full sun on the porch during the day when it's been =
+60 and sunny. Do I need to do anything else to break them in to =
outdoor exposure? =20

They're about 6" tall and have two leafs open.

I also have some dormant roots that I have not started yet. Could these =
be put in the ground at this time?

Thanks,

Bob