Stop Right There!

While the golf course greens are dominated by Poa Annua, we have been able to keep the fairways virtually 100% Bentgrass for over 25 years through the use of a selective post-emergent herbicide (which is not labeled for use on putting greens). 

This year we are using an aggressive plant growth regulator (PGR) on the fairways, which gives Bentgrass a competitive edge over Poa.  This is a different product than the PGR we use on the greens.

In the interface where the greens and fairways meet, we may experience some overlap of fairway and green spray applications.  As you can see in the picture below, the Poa is not a fan of this combination, and will not be able to expand outward from the green complex.

Weakened Poa can be seen in yellow patches.