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.

Proper identification of grassy weeds is a vital skill that turfgrass managers must possess and continually improve. Grassy weed identification depends heavily on the vegetative characteristics of the plant and time of year. The first step in turf weed control is a turf management program that produces a dense and healthy turf. This can be accomplished by growing an adapted turfgrass variety to your conditions and by properly fertilizing, mowing, aerating, overseeding, and watering.
Two ways of categorizing grassy weeds for weed control purposes are by their growth cycle and season. Annual weedy grasses are those that germinate in the spring, grow actively through the summer, produce seed and die all within the same growing season. Examples of these weeds are crabgrass, barnyard grass, foxtail and sandbur. Perennial weedy grasses are those that survive year to year through plant structures such as crowns, roots, rhizomes and stolons. Common examples include tall fescue and quackgrass. A second way of grouping grassy weeds is to consider their season of optimum growth. Those grasses such as quackgrass that have peak periods of growth during the spring and fall with a somewhat inactive period during the hot summer months are called cool-season grasses. Those grasses such as crabgrass that have a peak growth period during the summer months with little activity during the cool spring and fall months are known as warm-season grasses. 

Pre-emergent herbicides are the best way to control summer annual grassy weeds like crabgrass. Pre-emergent herbicides are active in the first ¼ inch of soil and remain active for up to 6 weeks. They will destroy the newly germinating seedlings before it emerges from the ground. Pre-emergents are time sensitive and are best put down the first part of May thru the first part of June because germination of seeds happens after the soil temperature is above 58 degrees for 4 to 5 days. This will usually be around the middle to end of May depending on soil type and exposure. Pre-emergent’s must be watered in to be affective.  Post-emergent herbicides should also be used to control summer annual grassy weeds. Post-emergent treatments are done after the plant has emerged from the soil and before they go to seed not allowing any additional grassy weeds seed to enter the turf.

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