During the last Mirai Live on Olive Design, Ryan said that Yamadori Olives do not exist.
I grew up and lived on the island of Cyprus in the East Mediterranean sea. There are no bonsai clubs, no materials, and hardly any practitioners on the island. With a couple of friends, we started collecting Wild Olives. These bear no fruit and they grow wild in arid land. They have very small leaves. They are very similar (if not the same) to the wild olive trees of Mallorca and I have seen trees like these ones in Greece too.
I now live in the UK and i recently brought some of these yamadori wild olives with me. They are just raw material, except for a couple of those that i had since 2 years ago. Almost all of the deadwood is natural.
Please have a look at some examples of these yamadori trees, most in raw form:
And these are the wild Olive leaves compared with the fruit bearing European Olive leaves: