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Cornell Cooperative Extension

Nassau County

  • Horticulture
  • Natural Resources
  • Energy & Environment
  • 4-H Youth Development
  • DPF 4-H Camp
  • Nutrition, Health & Wellness
  • Food Systems
Fertilizer spreader
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  • Fact Sheets >
  • Turf Problems
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Turf Problems


Anthracnose on Turfgrass
Chinch Bugs 
Control of Mushrooms & Toadstools on Lawns 
Control of Yellow Nutsedge in Turf 
Controlling Bentgrass Patches 
Controlling Moss & Algae in the Lawn 
Crabgrass Control 
Dollar Spot on Turfgrass
How to Select a Sample for Lawn Diagnosis 
Mugwort
Necrotic Ring Spot & Summer Patch
Poa Annua 
Pythium Blight and Root Rot 
Rhizoctonia Disease (Brown Patch)
Recognizing Broadleaf Weeds in the Lawn 
Red Thread Disease 
Slime Mold in Lawns 
Snow Mold 
Sod Webworms 
Turfgrass Grubs
Wild Onion and Garlic

Last updated March 3, 2015

Fact Sheets

  • Annuals, Perennials, Bulbs & Ferns
  • Diseases of Trees & Shrubs
  • Fruits & Vegetables
  • Home Horticulture
  • House Plants
  • Household Pests
  • Insects on Trees & Shrubs
  • Turf Culture
  • Turf Problems

Events

    closed for Memorial Day holiday
  • Offices Closed - Memorial Day
    Monday, May 26
    12:00 PM - 12:00 PM
  • ​30 Hour Pesticide Training Course - June 2025
    Wednesday, June 4
    8:00 AM - 5:00 PM
  • Offices Closed - Juneteenth
    Thursday, June 19
    12:00 PM - 12:00 PM
  • Offices Closed - Fourth of July
    Friday, July 4
    12:00 PM - 12:00 PM
  • Offices Closed - Labor Day
    Monday, September 1
    12:00 PM - 12:00 PM

See more

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Cornell Cooperative Extension
Nassau County

CCE-Nassau Main Office
Eisenhower Park, Special Activities Center, Parking Field 8
PO Box 148
East Meadow, New York 11554
TEL: 516-832-2591
FAX: 516-832-2597
nassau@cornell.edu

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