Pros:
Osage Grove is an amazing course set in the mostly wooded portion of the small Kathryn Stagge-Marr Park. Other than the playground near the parking lot of the course, this park is almost all disc golf. There is a trail that goes along the course, but it doesn't interfere with play and I did not see anybody using it while I was playing.
This course has an absolute abundance of layouts. Every hole has two concrete tee pads, a Red and a Blue. I believe every hole as multiple pin placements, some as many as four. And, if that isn't enough, nine holes have multiple baskets! Even though there are many courses nearby, I could see playing here mostly everyday just because of the multiple layouts.
On top of the layout variety, there was a huge variety in shots needed. There were a lot of tight wooded fairways, but also some fun open holes. These came in a large range of distances, with shots ranging from under 300 feet, to a whopping 1180 feet! The course does a great job of mixing it up, so you don't play all the wooded holes in one cluster, and then the open holes in the other.
Concrete tee pads are dyed the color of the tee, so the blue tees are blue, and the reds are red! That was really cool. The tee signs also had matching colors. The tee signs were quite nice too, with a detailed map, as well as a pindicator, and a note if the hole had multiple baskets.
There were a lot of navigational signs leading you to the next hole, and the online map was also very helpful. I never got lost.
Cons:
Osage Grove is a very solid course, and it is definitely a step above your average course. However, there are a few things keeping it from being the absolute best of the best.
With so many layouts, it can be a little overwhelming for a new player, and the drive-by player. There were a few times I had to walk the fairway to make sure I was going to the right place. The tee signs were a huge help here. If you were to play a tournament here, I would strongly recommend a practice round.
This course does not have a huge amount of elevation, and other than the occasional creek, does not have a true water shot. This means, by my standards, there isn't a true signature hole. While a lot of the holes were very fun, they don't make my "Dream 18" that I am still yet to complete.
The fairways are all very fair, but the rough is very thick in some spots. While this was not a huge problem for me, because I always land in the fairway (sarcasm), the less experienced player may have trouble navigating the thorn bushes and thick foliage.
I played on a 60 degree day in February, which is quite rare for the area. It happened to melt all of the snow on the course in under 24 hours, making the low lying areas, and a lot of other places, a soupy mess. This is definitely an extreme case, but I don't believe that the course usually drains well.
While no fairways cross each other, and nothing plays extremely close together, the course is definitely on the more compact side. This course, even though it's mostly wooded, does not play like a private course. On the plus side, here isn't a lot of unnecessary walks to the next hole, so I was not passing out after the round, which would be possible after playing three courses that day.
Other Thoughts:
All in all, Osage Grove was an extremely fun course, that matched my expectations. It was a whole lot of fun, and reminded me a little bit of my home course, Knob Hill in Pittsburgh, in a few ways.
While this course wasn't the most punishing I have ever played, or the course that gave me the most enjoyment, it was a nice balance between the two, which I think can make any course great. It was like if Idlewild, Lincoln Ridge, and Mt. Airy had a baby, if that makes sense.
I would definitely recommend this as a course to play in the Cincinnati area, and along with the other three courses mentioned, makes for a weekend of fun disc golf!