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Joan from New Brighton says:

05/02/11 06:10 PM

I have used Guaranteed since the early 90's and I have enjoyed watching there company grow without compromising the service they have provided to us! we love supporting our local companies


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Refer a Neighbor... or a Friend

Receive one free Fertilizer and Weed control application on your next service when you refer a neighbor or a friend to Guaranteed Turf Care and they sign up for our Nature Green or Weekender Mowing program.

Snow molds are fungal diseases that flourish under snow, especially when the ground is not thoroughly frozen before the first snow and when snow cover is present for extended periods. Snow molds are named for the webby material or mycelium that grows over circular patches of matted grass.
Gray snow mold is caused by the fungus Typhula incarnata and other Typhula species. Susceptible turf species are bluegrass, fescues, ryegrass and mainly bentgrass. Yellow to white circular patches of damaged turf are visible right after snow melt. Patches vary in size and may overlap to infect large areas of turf.  The fungus produces yellow/orange structures called sclerotia that when mature are dark-brown to black in color, are easily visible,  and persist through the summer and in late fall. These structures start colonizing grass leaves again 30-45 days after permanent snow cover has left.  Gray snow mold damage occurs in winter and early spring. The best thing you can do for grey snow mold, aside from improving your soil aeration and bioactivity is to lightly fluff up the dead grass with a rake. This will allow it to dry more completely and will also allow the sunlight to reach the soil and promote new grass growth. This disease rarely kills the grass and fungicidal treatment is not warranted. If lawns are being reseeded consider planting resistance turfgrass cultivars. 
Pink snow mold is smaller in size but can be more problematic.  Pink snow mold remains active much longer than grey snow mold and can kill your grass. It can continue to go until temperatures get into the low 60’s. Pink snow mold is caused by the fungus Microdochium nivale that produces roughly circular bleached patches ranging in size from 1-8 inches in diameter. Susceptible turf species are bluegrass, fescues, ryegrass and mainly bentgrass. The patch will appear red-brown and water-soaked at first then later turn pinkish white with red-brown border. You can see this easily in the morning when there is dew on the ground. As with the grey snow mold, you should lightly rake or fluff up the pink snow mold to allow air and sunlight to the soil. With this type of fungus you should be careful to not spread the disease by using the rake on the rest of the lawn.  After you rake the pink snow mold you should clean your rake with some alcohol or an anti-bacterial soap.
The following steps can be taken to minimize damage in future years: 
  • Avoid excessive applications of nitrogen fertilizer in the fall. 
  • Continue to mow the lawn at the recommended height until it is no longer actively growing. The taller the grass, the more likely it will mat down and encourage snow mold development. 
  • Rake up leaves in the fall. 
  • Manage the thatch layer to avoid accumulations of more than ½ inch. 
  • Spread out large snow piles to encourage rapid melting. Use snow fencing to minimize snow accumulation in problem spots

Grey Snow Mold

Pink Snow Mold

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