I picked up 13-13-13 today, questions inside

Discussion in 'Fertilizer Application' started by Southern Pride, Mar 9, 2011.

  1. Southern Pride

    Southern Pride LawnSite Bronze Member
    from Memphis
    Messages: 1,382

    Picked this stuff up at lowes today. Got a small 33lb. bag and doing my home. It is 10,000 sq ft. It is grainular.

    When is the best time to apply this stuff. Bout to bower my buddys spreader and it has been off and on rainy this month, 50's & 60's temps here in Memphis. Cuts start in April and my lawn is mostly weeds and sparse with dirt areas, etc. I'm hoping to spread some of this triple 13 to green it up a little more.

    When should I spread it? When's the best time?
    Is this 33lb. bag enough for 10,000 sq ft?

    I know nothing about fertilizing so just need some SIMPLE responses, don't care to do anything else to the lawn other than put this down and water. It's my own yard so I don't care if it's a perfect lawn.
  2. fredmullegun

    fredmullegun LawnSite Senior Member
    Messages: 317

    Next time buy fert made for turf.

    13-13-13 might give you too much P and K but since you don't care put it down when the lawn is growing well. Probably an all mineral, no slow release fert so it should be put down when the turf is actively growing.
    Last edited: Mar 9, 2011
  3. Turf Dawg

    Turf Dawg LawnSite Gold Member
    Messages: 3,719

    Most of the time how much a bag will cover is based on what % nitrogen which is useally about one pound per thousand. To find out you would take .13X33 [%n X's bag weight] so this will treat 4.29 thousand SQ FT. However with the 13%P and 13%K that would be too much for most areas so I would say it should be used on about 8 thousand SQ FT.
  4. fredmullegun

    fredmullegun LawnSite Senior Member
    Messages: 317

    I think just use the one bag for the entire lawn. Wait until it is growing a little then spread it. Next time buy some 39-0-0 with slow release N and spread 20 pounds of it over the whole yard.
  5. Southern Pride

    Southern Pride LawnSite Bronze Member
    from Memphis
    Messages: 1,382

    Like I said I know knowing about fertilizer. Seems pretty complicated actually. I'll probably wait until it starts growing and spread as much of the one bag as I can and hope for the best.

    See the weird thing is I've heard 13-13-13 recommended a couple times but on the bag it says "For quick green up" but says nothing about grass and only desbribes tree trunks, gardens, and flower beds? It's like even the bag is contradicting itself. I don't get it, but F it I'll throw it down once we start gettin some green.
  6. fredmullegun

    fredmullegun LawnSite Senior Member
    Messages: 317

    Just throw it all down. Try to get it as even as possible. Most turf fertilizer is high nitrogen like 39-0-0. Next time buy fert made for turf and spread as directed.
  7. Southern Pride

    Southern Pride LawnSite Bronze Member
    from Memphis
    Messages: 1,382

    Okay well what's the best fert for turf that they sell at Lowe's or Home Depot.
  8. Ric

    Ric LawnSite Fanatic
    Messages: 11,969


    I am afraid you are a victim here of the BLIND LEADING THE BLIND. Go ahead and apply the whole 33 pound bag to your 10,000 sq ft now and water it in. Triple 13 or 13-13-13 has been a popular pasture fertilizer for years and should really Thicken up your turf. Triple 6 or 6-6-6 was a standard turf fertilizer for years and the only difference between 6-6-6 and 13-13-13 was 6-6-6 was applied twice as heavy.

    Assume the 13-13-13 is all fast release Fertilizer, you are still only applying less than 1/2 pound per thousand of Nitrogen and the fast release will help with spring Green up.

    Most turf Fertilizer are a 4-1-2 Ratio of N-P-K because university studies show that to be the economical use of Fertilizer by turf grass. In the future I suggest you stay with that ratio and not follow the 39-0-0 or any other xx-0-0 blends. 24-2-11 is close enough to the 4-1-2 ratio but 16-4-8 is a 4-1-2 ratio.
  9. JB1

    JB1 LawnSite Fanatic
    Messages: 5,904

    the 39-0-0 would be good if you like to mow every other day in the spring.
  10. Kiril

    Kiril LawnSite Fanatic
    Messages: 18,334

    If I may borrow a quote ................


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