Nothing special actually... just a garden with no explanations, guidance, list of species or anything. It's in a pretty bad shape as well. If there were no GPS directions we could have easily missed it. Not worth the stop.
Both Sego canyon and Sego ghost are amazing and well worth the stop. I suggest visiting Cisco as well, as it's a completely different ghost town experience with a very different atmosphere.
Be careful when driving as water washed away some parts of the dirt track, so the ride can be a bit bumpy.
As someone mentioned earlier, the wooden houses fell over and look like a pile of debris.
There is a very interesting graveyard nearby, you'll see it on the way back.
Cute place worth the stop... it will take you 20 minutes to walk around and read about the history of the place. It was rather crowded when we were there in the middle of the week. very easy to find from the main road.