Depending on which Superintendent you ask, you'll get 20 different answers regarding the type of divot mix they use on fairways and tees. This includes everything from color to peat moss content and whether or not seed is added to the mix. At Highlands CC, after experimenting with many different types of divot mix, I've found that straight sand (100% sand, no peat) works best for us. The bottles that are on the carts, also do not contain seed. This is mainly to keep bentgrass seed out of the rough. In our temperate rainforest climate (you wouldn't know this year) keeps things damp enough that the additional moisture holding capacity of peat isn't necessary, in my opinion. Straight sand also flows nicer from the bottles that members use. While seed will germinate in divots, I feel most times that it is the lateral growth habit of bentgrasses that will fill most voids. Finally, while I purchase our divot mix a dyed green color, you may notice some white sand mixed in with it. This is sand that we use for topdressing greens. The white sand is delivered in a tanker truck and pumped into a silo at the maintenance facility, keeping it dry and readily accessible. When we fill a cart to topdress greens, we may not use 100% of it and getting it back into the silo is impossible. Rather than get rid of it, we dump it in the divot mix bin. This is why some sand you see used for divots is white. Personally, the green sand is a member preference and has been in the past. I think many times, the green sand will fade to a color that stands out far worse than a brown color sand mix. Also, while I can't prove it, I've always felt that grass doesn't grow as well in the green mix as it does natural colored sand. Perhaps this is more psychological than anything.