Name: Sandy B. Ford River Twp, Michigan UP (Zone 4b) (Zone 4b-maybe 5a)
Gerry, if you're planting right in the ground I really think you will have no problems with the sunflowers. (I'd do that myself but I'd have to shovel too much snow to get to the ground )
“Think occasionally of the suffering of which you spare yourself the sight." ~ Albert Schweitzer C/F temp conversion