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White Grass Blades ?

12K views 7 replies 7 participants last post by  jda989  
#1 ·
Happy Thanksgiving Everyone,

I was out in my yard a few days ago and noticed some strong whitening of the grass blades. I would be surprised if it is associated with any pre-emergent applications (sprayed end of August). The only other thing I've put down in Aug/October is heavy applications of Nitrogen but nothing beyond the guidance.

I've attached some photos below. The white portion doesn't scratch off so it is not a residue. I should note, that I've seen this whitening appear before at other times of the year but it is not common and usually doesn't last long.

Typical background:
- location: Michigan
- Issue Appeared: When temperatures started to reach ~40F (though I've seen whitening like this during other time of year)
- Grass: Mixture of KBG, Rye, Red Fescue
- Location: Throughout whole yard with no noticeable patching or variation





 
#3 ·
+1 Cool and cloudy weather combined with poor air circulation in the grass can result in this. Excess Nitrogen can also play a role.

It can be treated with something like propiconazole but this disease doesn't normally have long term effects. In other words, if you left it alone and didn't treat it chemically, it will go away.
 
#5 ·
Harts said:
+1 Cool and cloudy weather combined with poor air circulation in the grass can result in this. Excess Nitrogen can also play a role.

It can be treated with something like propiconazole but this disease doesn't normally have long term effects. In other words, if you left it alone and didn't treat it chemically, it will go away.
I'm in Michigan and have the same thing on the side of my house (more shade and less circulation between houses).