Matt from Richmond, Va writes
I used Prime Source Meso 4SC Select in two applications before fescue seeding with the last application being about 5 days prior to seeding. I’m noticing one small patch of seedlings turning white about 2.5 weeks after the tenacity application and 1.5 weeks after seeding. Could this be a residual impact of Meso or do I have other potential issues? The white seedlings are very localized to a spot the size of my hand. I have been watering several times per day but this isn’t the wettest part of my yard (although it is relatively shady).
Prime Source Meso 4SC Select also has pre-emergent activity up to 30 days so it can cause whitening on new seedlings when applied as a broadcast application. You can try to eliminate the whitening with a Chelated Iron product.
Answer last updated on: 09/30/2019