Rust Fungus Problem on Lawn

  • 2
  • Question
  • Updated 3 years ago
  • Answered
EGO Community, I know we normally talk EGO products but today, I have one question for everyone on this forum about "lawn fungus" problems.  I have lived in my house for over 10 years and have never had any issue with "rust fungus" problem on my lawn.  The last two weeks, I have noticed "orange powder" on my lawn mower after I finished cutting my grass.  I always "mulch" cut my lawn, fertilize and water it regularly.  Overall, I would say that my lawn is pretty healthy (see picture below).





From a "first glance" at my lawn, you don't see any yellow and/or brown spots anywhere.  But when you get down low and "zoom in" on a particular area, then you will notice some orange rust blotches on the grass blades (see picture below).  I have done some "research" online to see how to treat this and which product works best.  Thus far, I have found "positive" reviews on Spectracide Immunox Disease & Insect Control and have applied it to my lawn today.




My questions to those who experience this type of fungus are listed below:
  1. How did you treat your "rust" problem?
  2. If you use a "fungicide" then which product did you use?
  3. How long before you start seeing "positive" results after treatment?
  4. Did you "treat" your lawn once or multiple times, to eradicate the "rust" problem?
As stated from above, this is the "first time" I have ever encountered this "rust" issue.  When I talked to a Home Depot guy in the Lawn Department today, he said that more people this year have had similar issues with the "rust" fungus.  I live in Chicago and my area is considered a "cool climate" grass zone, and my grass is the Kentucky Bluegrass.  Look forward to your feedback and thanks in advance! 
Photo of David HD

David HD, Champion

  • 34,956 Points 20k badge 2x thumb

Posted 3 years ago

  • 2
Photo of Wrog

Wrog

  • 2,832 Points 2k badge 2x thumb
I use Bonide Copper Fungicide for all my fungus-control needs. Works great, use as directed. ;)
Photo of Wrog

Wrog

  • 2,832 Points 2k badge 2x thumb
Also, I've used the Bonide for the rust in the lawn as well as for downy and powdery mildews in my trees. I also have Kentucky bluegrass so I know it works well for that.
Photo of David HD

David HD, Champion

  • 34,956 Points 20k badge 2x thumb
Thanks Wrog, do you use the "sprayer" or spread it like fertilizer?
Photo of Wrog

Wrog

  • 2,832 Points 2k badge 2x thumb
I use the liquid concentrate in a sprayer. I also spread a granular systemic disease control for prevention now.
Photo of Blue Angel

Blue Angel, Champion

  • 179,788 Points 100k badge 2x thumb
Shoulda kept the Ego mower, David. Gas mowers are terrible with lawn infections, they're just too dirty. I've heard Hondas are particularly bad, especially with those imported non-native infections.

I couldn't type hat with a straight face. :-P
Photo of David HD

David HD, Champion

  • 34,956 Points 20k badge 2x thumb
"Never say Never" Blue, as I am eagerly awaiting for EGO next version of their lawn mower.  Then, I will "pull the trigger" and sell my gas Honda mower.  Here is what I think EGO will make:

  1. 35" Cutting Path - less time cutting your grass
  2. All Wheel Drive - make pushing much easier
  3. Xenoy Deck - virtually indestructible deck
  4. New magnesium blade - strong yet light which will last forever
  5. 10 Ah battery - will run for 2 hours on 1 full charge
  6. 4 in 1 mode - mulch, bag, rear discharge and leaf shred
All this for $599.00 retail at Home Depot or other "authorized dealers" EGO decided to partner with.  This would be a mower worth "saving" your hard earned $$$$$ for .... : )

Photo of Blue Angel

Blue Angel, Champion

  • 179,768 Points 100k badge 2x thumb
Talk about aiming high! :-)
Photo of David HD

David HD, Champion

  • 34,956 Points 20k badge 2x thumb
If you can imagine it, then you can build it - just trying to help EGO with their next "awesome" power tool ...

Photo of Wrog

Wrog

  • 2,832 Points 2k badge 2x thumb

I checked which granular fungicide I used and it's also Bonide:

Bonide Infuse Lawn & Landscape, 7.5lb Granular

There's also a liquid sprayer version which I've seen my neighbor use.  Seems like this is the time of year that the rust rears its ugly head.  My neighbor told me about it the first time and I didn't know what he was talking about until I ran my fingers across the grass and they came back orange.  I get downy mildew on my maple tree in the spring so I use these a few times throughout the season.

Photo of David HD

David HD, Champion

  • 34,956 Points 20k badge 2x thumb
Yeah, I saw the 7.5 lb granular option yesterday after you told me about it - which I plan to use.  Apparently, the weather this year is the main cause of this "rust" fungus problem.  Based on many articles I have read, this usually happens in late summer or early fall, during periods of dry weather or when the grass is low on nitrogen.  So if you want to treat it "naturally," then fertilize the lawn so the grass can grow quickly, and mow twice a week.  Since I already "fertilized" and have been cutting "twice" a week, my only option is to use a "fungicide" product.
Photo of DJDDay

DJDDay

  • 9,440 Points 5k badge 2x thumb
I've had rust fungus in my grass before.  I got rid of it two-fold.. for starters, you have to correct the cause (which is almost always either low nitrogen levels and/or extended drought).  If you correct the environmental conditions, then you have to stop the spread of the spores.  Almost all fungicide should be effective, though I'm a fan of the sprays.  Make sure you spray your mower off away from the lawn, as the red powder is mostly spores.

Now, fun science fact:  fungi are more closely related to humans, genetically, than they are to plants!  In fact, many fungi cell walls contain chitan (which can be found in the exoskeletons of insects and crustaceans).
(Edited)
Photo of Blue Angel

Blue Angel, Champion

  • 179,788 Points 100k badge 2x thumb
Hmmm... I'll take your word for it! :-P
Photo of David HD

David HD, Champion

  • 34,956 Points 20k badge 2x thumb
A great idea about spraying the mower, thanks DJ. That said, did you spray your mower the day before or day off cutting grass?
Photo of DJDDay

DJDDay

  • 9,430 Points 5k badge 2x thumb
I sprayed the top and bottom deck off, before and after each cut.  I sprayed it off in the street away from my lawn (and away from my neighbor's lawn).  EGO's mowers are rated IPX4, so I wasn't too worried about a little spray.  No issues as of yet (crosses fingers LOL)!
Photo of Wrog

Wrog

  • 2,832 Points 2k badge 2x thumb
I've heard you should always disinfect the underside of the deck to prevent spread of disease.  Hearing and doing are very different things.  :)
Photo of Blue Angel

Blue Angel, Champion

  • 179,788 Points 100k badge 2x thumb
Our pal LCN has just posted a video with some rust disease care tips:
https://youtu.be/2t1A-_xVivA

What timing!
Photo of David HD

David HD, Champion

  • 34,956 Points 20k badge 2x thumb
He read my mind, thanks Blue!