Road salt can damage lawns, concrete and sidewalks. The Handyguys answer a question about rock salt and lawns then discuss different types of de-icers.

De-icing salts and your lawn

The Handyguys answer the following question from Mike:

I live in Michigan and the snow plows push the snow (AND SALT) up on my yard. what can I do to negate the effects the salt will have on my newly planted grass, once the snow leaves?

http://www.flickr.com/photos/izik/ CC BY 2.0

Great question Mike. The bottom line is that road salt raises the PH in the soil. You need to neutralize it. Neutralize the damage with an application of dolopril style limestone or granular gypsum. Spread thinly and water. Follow the instructions and safety precautions on the package.

De-icing salt and concrete

There is a lot more research on the effects of de-icers and their effects on concrete. Brian and Paul make reference to a study performed by Iowa State University. The article has a lot of techno jargon in it that chemists may like. We gleaned that different types of de-icers had differing effects on the deterioration of concrete.

We will list the different de-icers used in the study and summarize the results

NaCl – also known as rock salt or sodium chloride. This is the most common de-icer. Its effectiveness is good to about 15 or 20 degrees Fahrenheit.  Its also usually the least expensive.

CaCl₂ - also known as calcium chloride. Its effectiveness is good for below 0 degrees Fahrenheit. Calcium chloride was the second most destructive de-icer in the Iowa State University tests.

MgCl₂ – also known as magnesium chloride. Magnesium chloride will cut through ice at sub zero temperatures, will not damage lawns as much, reduces steel corrosion and groundwater chloride contamination. The downside is that magnesium chloride was found to be the MOST destructive to concrete, especially low quality concrete.

The Iowa State University concludes:

There is considerable interest in new deicers, especially magnesium chloride because of its anti-icing properties and its effectiveness at lower temperatures than rock salt, and calcium magnesium acetate (CMA) because it reduces steel corrosion and groundwater chloride contamination. Our experiments document that the substitution of magnesium and/or calcium deicers for rock salt may have unintended consequences in accelerating concrete deterioration. Long-term, carefully controlled field experiments with magnesium and calcium deicers are essential in order to fully determine the effects of long-term use of these deicers under highway conditions and to determine if they are suitable substitutes for rock salt.

The Handyguys conclusions

Related shows:

1. Hardscaping Options – Concrete, pavers or stamped concrete
2. Installing Wood Floors On Concrete, Dripping Faucets And Finding Stains
3. Using Leaf Blowers Vs Rakes And Repairing Leaky Showers

The Handyguys talk home improvement and keeping a green and weed free lawn.

Now that you have your mower ready for the new season (after listening to show #14), it is time to discuss proper lawn care. Anyone can hire a lawn service, but the Handyguys prefer the DIY method. Get down to the home center, buy your weed and feed, and start fertilizing before the summer heat strikes. Listen to the podcast for all of the details.

Before beginning your lawn care program (or even if you have already started), it is good to conduct a soil test to determine that status of your soil. The results from a soil test will reveal what nutrients your lawn requires and whether you need to add lime or sulfur to achieve the proper pH.

You can add specific ingredients in your fertilizer plan or just follow a seasonal plan from a company like Scotts or Vigoro. These products should be designed for your region of the country.

Some folks prefer more organic methods of lawn care. More information on organic products can be found here:

Dirt Doctor

Richsoil

The fertilizer programs will only address weeds and nutrients. You may also have specific pests or disease. A healthy lawn is the best defense against lawn disease. Lawn pests include moles, grubs and even mold. Controlling grubs will eliminate a food source for the moles. Watering properly will prevent mold and fungus.

Both Handyguy Brian and Handyguy Paul recommend a broadcast spreader for DIY fertilizer applications.

So, how much should you water? The Handyguys, and their expert advisers, recommend about 1” of water per week. This means watering the entire inch at one time in early AM or late afternoon. Do not water at night as this can promote fungus. How do you determine you have applied 1” of water? You can use a rain gauge, a fancy timer, or you can just put out a soup can when you water and when it has an inch of water in it you are done. The rain gauge in the picture is only $1.99 in our store and comes with a separate sprinkler gauge. Just click here for the rain gauge. Don’t forget to factor in the water from the rain. A deep soak like this will help promote deep root growth.

What is the proper height to mow for a health lawn? It depends on the type of grass. Generally speaking you want to mow at 3” and never cut more than a third of the blade at one time.

But if you really want to get lawn care right… listen to our podcast.

Please note an error in the podcast: Paul incorrectly states that your second fertilizer application should occur before “Labor Day”. He meant to say “Memorial Day” and that is what he thought he said… but I guess recordings don’t lie!

Related shows:

1. Labor Day Lawn Care Do’s and Don’ts
2. What Is A Certificate Of Use And Green Lawn Tools
3. Fall Lawn Care Tips