Michigan State University Turfgrass Scienceturf.msu.edu

Pearlwort in Putting Greens

Jun 23, 2010 at 12:24pm  —  Kevin Frank

During a recent golf course visit I came across birdseye pearlwort (Sagina procumbens L.) on a putting green. As described in the book Weeds of the Northeast, “pearlwort is a small stoloniferous perennial that forms dense turf like mats with erect stems.” When mowed at putting green heights the patches of pearlwort look very similar to Poa annua until you get down to ground level and notice the pearlwort flowers enclosed in a capsule. When mowing putting greens every day it would seem these would be constantly cut off. However the patches I observed did have these fruit capsules present that must have either flexed below the mower or had sprung up since mowing. In most cases it would seem manual plug removal from the green would probably be the best option. Although I know this is not a complete list, a quick search found herbicide control options include MCPP, Quicksilver (a.i. carfentrazone), and Rubigan. As always, please remember to read and follow all label directions when applying a herbicide.