CRAB GRASS PREVENTION

Discussion in 'Organic Lawn Care' started by mattymax, Jul 12, 2018.

  1. mattymax

    mattymax LawnSite Senior Member
    from NJ
    Messages: 268

    Is there any ORGANIC pre emergent products out there for Crab grass>>?

    I let my chickens out in my back yard and I want to stay away from regular LESCO products around them

    Thanks
    matt
     
  2. That Guy Gary

    That Guy Gary LawnSite Silver Member
    Messages: 2,839

    Walker56 likes this.
  3. OP
    OP
    mattymax

    mattymax LawnSite Senior Member
    from NJ
    Messages: 268

    Anyone know any other ?
     
  4. RigglePLC

    RigglePLC LawnSite Fanatic
    Messages: 15,915

    For crabgrass crowd-out--you might try a heavy overseeding with one of the new super-dense Kentucky bluegrass varieties: Arcadia, Limousine, Bluenote, Midnight. For small amounts--Scotts all Bluegrass Blend: (Gaelic, Jumpstart, Abbey, Avalanche).

    Cut short or power rake or both. Then sow double seed to be sure of a dense establishment of bluegrass, because when overseeding, the percent germination is less. Once the bluegrass is dense--let it get a bit taller to shade-out the crabgrass. Keep it extra dense, by frequently adding plenty of fertilizer (chicken manure or whatever), plus plenty of water.
     
  5. Gatto

    Gatto LawnSite Member
    Male
    Messages: 58

    you are better off over seeding like riggle said because I think its too late for corn gluten meal applications in nj. Mid april would have been better with all the rain we got. Drown out the weeds with grass seed and over seed and aerate twice a year then only once a year in the fall if you want. Another option is to pull them manually and re seed.
     
  6. RigglePLC

    RigglePLC LawnSite Fanatic
    Messages: 15,915

    Another option--if you don't mid some hand labor--is to hand remove the larger crabgrass plants. Possibly limit it to 10 minutes each time you are on the property. Charge for your time of course. I find it is easy to remove the big crabgrass plants in mid-summer--you just cut them off at the soil level using a folding tree saw, knife or whatever you have.
     
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  7. phasthound

    phasthound LawnSite Fanatic
    Messages: 5,755

    As mentioned a dense lawn is your best defense against crabgrass. In NJ a mix of turf type tall fescue http://american-lawns.com/grasses/turf-type_tall_fescue.html and Kentucky Blue Grass http://american-lawns.com/grasses/bluegrass_ky.html and disease resistant Ryegrass http://american-lawns.com/grasses/rye_pere.html are your best option. The best time of year to seed is fall, but if you have irrigation you have a good chance of succeeding in the spring.
    Granular Corn Glutton is not a good option for you as your chickens will most likely eat it. Liquid corn gluten would work better for you, but it is expensive and a little too late to apply as someone mentioned.
     
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  8. BigJlittleC

    BigJlittleC LawnSite Fanatic
    from Chicago
    Messages: 6,053

    Corn gluten meal liquid form is your best bet outside of a dense healthy stand of turf.
     
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  9. RigglePLC

    RigglePLC LawnSite Fanatic
    Messages: 15,915

    Tall fescue and perennial rye do not creep--not much. If the seed does not take hold well--or if they thin out over the summer--they remain thin. Be sure to use grass varieties that show high density in the NTEP trials.
    Compass, Quatro, and Spartan II are exceptionally dense, they are fine fescues.
    Ruddy is a new fine fescue and forms a very dense stand. It has less weed invasion than other fine fescues.

    http://www.sroseed.com/Files/Files/SRO_USA/Tech_Sheets/Turfgrass/Fine_Fescue/Ruddy_ts.pdf

    Kentucky bluegrass NTEP density ratings, 2018. Try to find varieties in the top 30 percent.
    https://ntep.org/ntep/data/kb17/kb17_19-1/kb1719t18.txt
     
    Last edited: May 2, 2019
  10. RigglePLC

    RigglePLC LawnSite Fanatic
    Messages: 15,915

    Last edited: May 2, 2019

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