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Lawn disease and fungus control in Illinois

Brown patch, dollar spot, red thread and rust all show up in Illinois summers. Humid nights and warm days set the conditions, and the way a lawn gets watered decides whether the disease takes hold.

EKKO Lawns mascot

Short answer

Lawn disease is fungal and needs three things at once: the pathogen, a susceptible grass and the right weather. You cannot change the weather, but you can change watering, mowing and nitrogen timing, which is where most cases get solved. EKKO Lawns identifies the disease first and applies fungicide when the pressure justifies it.

What lawn disease looks like here

Each disease leaves a different signature. Brown patch throws irregular tan circles with a darker smoke ring at the edge in humid heat. Dollar spot leaves silver dollar sized bleached spots that run together. Red thread shows pink threads on the blade tips in cool damp weather. Rust puts orange powder on your shoes when you walk the lawn in late summer.

  • Brown patch circles that expand through humid nights
  • Dollar spot bleached spots merging across the lawn
  • Red thread pink webbing on blade tips in cool damp spells
  • Rust leaving orange dust on shoes and mower wheels
  • Snow mold matted gray or pink patches after the thaw

How we approach a disease call

Most disease calls get fixed with cultural changes. Fungicide is the tool for active outbreaks that will not wait.

1

Identify the disease

Pattern, lesion shape and weather history narrow it down. The treatment changes depending on which one is active.

2

Fix the watering

Water deep and early in the morning. Evening watering leaves blades wet all night, which is exactly what fungus needs.

3

Check the nitrogen

Brown patch feeds on lush growth from heavy summer nitrogen. Dollar spot shows up when the lawn is underfed. The fix runs opposite directions.

4

Raise the mowing height

Taller grass handles stress better and dries faster after dew. Sharp blades matter too, since torn tips open the door for infection.

5

Apply fungicide if needed

Where an outbreak is active and spreading, a curative application stops it. Preventive programs make sense on lawns with a history.

6

Repair after

Fungicide stops the spread. Thin areas left behind need seed in the fall to close back up.

Healthy Illinois lawn maintained to resist fungal disease

Watering habits cause most of what we see

Evening watering is the single most common cause of disease pressure on the lawns we service. Grass goes into the night wet, dew keeps it wet until morning and the fungus gets ten hours of ideal conditions every night.

Move irrigation to between four and eight in the morning. Water deep, two or three times a week rather than a little every day. The lawn dries by midday and disease pressure drops without a single application.

  • Disease identified before any fungicide goes down
  • Watering and mowing plan written out for you
  • Nitrogen timing adjusted to the specific disease
  • Preventive programs for lawns with a repeat history

Pairs well with

Fertilization

Nitrogen timing either feeds a disease or starves it, depending on which one is active.

See fertilization

Lawn aeration

Compacted soil holds water at the surface and keeps the crown damp longer than it should be.

See aeration

Lawn overseeding

Newer grass varieties carry better disease resistance than what is in an older lawn.

See overseeding

Lawn disease questions we get

Often yes, once the weather changes. The trouble is what it leaves behind, since thinned areas fill with weeds before the grass recovers.

Between four and eight in the morning. Deep and infrequent beats light and daily, and evening watering keeps blades wet all night.

It stops the disease from spreading. It does not regrow grass that already died, so those areas usually need seed in fall.

Some lawns sit in conditions that favor it: heavy shade, poor air movement, older susceptible grass varieties or high summer nitrogen. Those properties benefit from a preventive program.

Yes at label rates. Stay off treated areas until dry, usually one to two hours.

It depends on lawn size and whether the application is curative or preventive. Call (815) 521-6356 and we will look at the lawn first.

Get the disease identified before you treat it

Call and we will look at the pattern and tell you what is actually happening.

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