If they are not green or yellowish/green they are not Kadota.

This is why I don't buy trees from Lowe's or Home Depot. I almost bought a tree at HD last month. I thought better of it though when I saw a grape vine in a citrus container.

Some Lowe's and Home Depots stock trees from major wholesale nurseries that are reputable like Dave Wilson Nursery. If my local stores ever carried trees from DWN I would trust them. But alas they do not stock them in any of our local stores.