Oh, we all forgot to add the
@elukai to bring the poster's attention to our replies.
In my book of maps there are 7 states with a Cottonwood listed.
(If I haven't made any errors) Our ATP calendar says to set out sweet potatoes:
AL - Mar 21 - Apr11
AZ - Apr 24 - May 15
CA - - Feb 22 - Mar 14
ID - Jun 9 - Jun 30
MN- May 13 - Jun 3
SD - May 16 - Jun 6
TX - Apr - Apr 22
Gosh, now I am hungry for sweet potato fries!