Servicing the Mpls/St. Paul metro through 5 area offices:    Eden Prairie (952) 941-2900 | Burnsville (952) 890-6655
Woodbury (651) 735-4422 | Plymouth (763) 383-7655
New Brighton (651) 633-9892



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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.

Nitrogen (N)
  • Nitrogen is a part of all living cells and is a necessary part of all proteins, enzymes and metabolic processes involved in the synthesis and transfer of energy. 
  • Nitrogen is a part of chlorophyll, the green pigment of the plant that is responsible for photosynthesis.  
  • Nitrogen helps plants with rapid growth, increasing seed and fruit production and improving the quality of leaf and forage crops.  
Nitrogen often comes from fertilizer application and from the air (legumes get their nitrogen from the atmosphere, water or rainfall contributes very little nitrogen).

Phosphorus (P)
  • Like nitrogen, phosphorus is an essential part of the process of photosynthesis.  
  • Phosphorus is involved in the formation of all oils, sugars, starches, etc. 
  • Phosphorus helps with the transformation of solar energy into chemical energy; proper plant maturation; withstanding stress. 
  • Phosphorus effects rapid growth. 
  • Phosphorus encourages blooming and root growth. 
Phosphorus often comes from fertilizer, bone meal, and superphosphate. 

Potassium (K)
  • Potassium is absorbed by plants in larger amounts than any other mineral element except nitrogen and, in some cases, calcium.  
  • Potassium helps in the building of protein, photosynthesis, fruit quality and reduction of diseases. 
  • Potassium is supplied to plants by soil minerals, organic materials, and fertilizer.
Calcium (Ca)
  • Calcium, an essential part of plant cell wall structure, provides for normal transport and retention of other elements as well as strength in the plant. It is also thought to counteract the effect of alkali salts and organic acids within a plant.  
  • Sources of calcium are dolomitic lime, gypsum, and superphosphate.
Magnesium (Mg)
  • Magnesium is part of the chlorophyll in all green plants and essential for photosynthesis. It also helps activate many plant enzymes needed for growth. 
Soil minerals, organic material, fertilizers, and dolomitic limestone are sources of magnesium for plants.

Sulfur (S)
  • Sulfur is essential plant food for production of protein. 
  • Sulfur promotes activity and development of enzymes and vitamins. 
  • Sulfur helps in chlorophyll formation. 
  • Sulfur improves root growth and seed production. 
  • Sulfur helps with vigorous plant growth and resistance to cold. 
Sulfur may be supplied to the soil from rainwater. It is also added in some fertilizers as an impurity, especially the lower grade fertilizers. The use of gypsum also increases soil sulfur levels. 

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