Kenly Cifers

Does anyone know how to become certified to perform percolation tests?

Thanks for the reply, friends. We have had a lot of interest in them even without advertising. I'm planning on digging them up after Christmas, putting them in landscaping cloth containers, and replanting them. My thinking is this will make it easier to remove them when selling.
Unfortunately, there is no tags on them yet identifying color. So I think it will still be a little while before I can sell.
What are your thoughts on selling them next summer? What should I sell them for?

My father had planned on selling crepe myrtles a few years back. Unfortunately, he found out later that year that he had arthritis and is currently unable to do much at all.
I have pondered the idea of taking over where he left off but there are some concerns. There are about 500-600 three year old Crepe Myrtles planted in a small area. They are all well over 7 feet. I'm not sure of the spacing but it is tight. Should I count them out as sellers and keep them as seed producers? If I can sell them, how would I market them?