[Stonehenge]

We recently transplanted a couple larger Arborvitae, and last night we had lots of rain and wind, and I heard from the client that both were no longer vertical. They each had a meaty rootball, but it wasn't enough to keep them upright.

I'm at a bit of a loss as to how to stake these two, as each has about 5-7 stems.

How would you hort pros go about staking something like this?