time for more sbm?

alabama_lowlifeJune 4, 2007

the only area of my yard that i'm currently concerning myself with is the front. it's a little over 4000 square feet.

i put out a 50 lb bag of sbm as my first fertilization of any sort(ever)about a month ago. i had wanted to do 2 bags since it works out to about 12.5 lbs/1000 with the one bag, but they only had one bag. they finally got another bag 2 weeks later so i put it out too.

i'm finally starting to be able to see the grass darkening so of course i'm pretty fired up and ready to do something else. should i keep pouring the SBM to it or mix it up a little? i know it's got the highest N level of the grains and at $9 a bag, i could put it on every few weeks and not hurt my wallet. i don't want to be overzealous, but none of my neighbors are watering so it makes mine look that much better and i've got little seedlings coming up where the leaves had been laying forever. and i can't wait until saturday morning so i can water! so what do i do now?

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hi alabama,

You lost me when you said "i'm finally starting to be able to see the grass darkening so of course i'm pretty fired up".

I don't understand the darkening part. Can you please explain more?



    Bookmark   June 4, 2007 at 8:18PM
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the grass is starting to turn dark green from actually having some fertilizer.

    Bookmark   June 4, 2007 at 9:22PM
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billhill(z5 MI - KBG)

Hey Bama, Your lawn could probably use another bag of SBM. If you could find some good compost and spread that around, your soil would benefit and all the little microbes would go to work gently feeding your lawn. Most importantly, start cutting your grass long if it is a type that grows well cut long. What kind of grass is it ? Keep reading the posts here in the organic lawn forum and feed your soil. You should have a great lawn in no time all if you can keep it watered. Good luck and welcome to the forum.

    Bookmark   June 5, 2007 at 5:30AM
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You can't overdo it unless you smother the lawn (about 1/4"). It doesn't seem that you're in any danger of that.

12.5 lbs/K ft is definitely reasonable (I tend to shoot for 14 myself). That works out to between 0.75 (at 6%) and 0.875 (at 7%) pounds of nitrogen per thousand square feet.

I don't know what kind of grass you have, so what it actually needs will differ. For bluegrass (that far south I doubt you have it), I'd be adding more and doing it again in mid-August. For bermuda, I'd be adding more and doing it every month during the growing season.

Letting us know what kind of grass you have would really help to put a plan together.

Still, with all that, the microbes can't digest it fast enough to burn the lawn (they'd kill themselves in the nitrates first--and they won't do that).

If this is your first year organic, going toward the high end is probably a good idea. It gets the microbe populations up and running, builds an organic base in your lawn, and the remaining food will either wash out (some) or sit in the soil waiting for bacteria to have time to deal with it (some).

They say that after a few years you can back off somewhat because there's enough organic material built up for the microbes to nibble on. I'm not there yet so I can't confirm that first-hand.

    Bookmark   June 5, 2007 at 7:41AM
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my best guess is that it's centipede, i got 4 or 5 varying opinions the last time i asked so i don't know for sure. i know there is SOME centipede because i seeded some in the very large bare area where the leaves had been. but the little seedlings look alot different than the full grown stuff, but they are pretty small still. i can take as many pics as you need to help identify it!

    Bookmark   June 5, 2007 at 6:33PM
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