Bumping this up, i got a 10ft heritage back in march that never came to life. Went this past week and picked up two 8 footers. They are grafted bur/english hybrids, looks like bur root stock to me. Anyways they have a lot of acorns and have put on 2ft of growth this season already with 1-1.5" trunks. One of the "prettiest" oak leaves i've ever seen. Very excited to see how these work out on my high ph ground, suppose to be good for it.