Look like dahlia tubers. Lucky you.

Don't dahlia tubers grow in connected clumps though? These were all on their own in different spots...

Sorry, yes there should be a group together. Maybe 4 O"Clocks.

I second the 4 o clocks.
Grown as annuals in colder climates.

They are charming and funny and brightly colored.

Unless you happen to be a white-only or no- yellow- person you will have fun with those resilient plants.

Bye, Lin

Here is a link that might be useful: About Mirabilis

or possibly incarvillea.