How is the leaf structure between a young mulberry tree and Rose of Sharon different !! We have so many mulberry trees near by and the seeds are always sprouting in our gardens...around our Rose of Sharon trees...don't want to pull up the Rose of Sharon- but oh me... those mulberry...thank you.

They are very difficult to tell apart.
I 'think' I can tell in person, in my yard, but don't know technically any hints for you. Rose of Sharon self seeds a lot under itself, around here. I pull all my rose of sharon seedlings, it is so common and not my favortie, so I let someone else worry about sharing them with other gardeners.
I don't find mulberry seedlings under that tree, but do have them also under shrubs- where birds sit.
So- under Rose of sharon= think same
everywhere else= think mulberry

sally-outstanding analogy-thank you very much...we will use your idea...again-thank you for your help.

Hope it helps
Also, mulberry can have many different leaf shapes on the same stem, so look for other leaf shapes on the stem.
https://www.flickr.com/photos/...

I looked closely today and have a clue for you-
Mulberry leaves are toothed (serrated) all along the edge.
Scroll down here
http://www.missouribotanicalga...
Rose of sharon leaf edges are smooth at the base and about 1/3 to 1/2 way along the sides, then toothed. I think you can see it here The thread "My one in a million Rose of Sharon" in Variegated Foliage forum

Good morning Sally, thank you again for your most worthy information -deed we do have MULBERRY trees so - thanks to you-will rid them out of the yard and gardens today...you are very informative and we appreciate you-thank you again.

happy to help! it was a good question