How-To Guides

Everything you need to start feeding well and make smart feed decisions — written for real beginners and improving homeowners.

Anyone standing over an open bag of fertilizer trying to work out how much of it their lawn actually takes.9 min read

How Much Fertilizer Per 1,000 Sq Ft: Bag Analysis to Pounds on the Ground

Divide 100 by the first number on the bag and you get the pounds of product that deliver 1 lb of nitrogen per 1,000 sq ft. A 21-7-14 bag needs 4.8 lbs per 1,000; a 46-0-0 bag needs 2.2. Multiply by your lawn area in thousands of square feet and you have the whole answer.

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Anyone whose spreader dial does not have the number the fertilizer bag told them to use.10 min read

Spreader Settings Conversion: Why the Number on the Bag Is Wrong for Your Hopper

Bag settings are written against two or three named spreaders, almost always Scotts and Earthway, and mean nothing on a different hopper. The fix is a single weighed test pass over a measured strip: weigh in, spread, weigh out, divide. Twelve minutes gets you a dial number that is actually yours.

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Anyone comparing two bags with different NPK analyses and unsure which one is the better buy for turf.8 min read

What the Three Numbers on a Lawn Fertilizer Bag Actually Buy You

The three numbers are percentages by weight of nitrogen, phosphate and potash. Only the first drives leaf colour and growth; the second is regulated out of most homeowner bags; the third matters more in autumn than in spring. Divide 100 by the first number to convert any analysis into pounds of product.

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Anyone who wants to know how many pounds of nitrogen their particular grass needs in a year, and how to split them.9 min read

Annual Nitrogen Requirement by Turf Species

Annual nitrogen demand runs from about 1 lb per 1,000 sq ft for centipede to 5 or 6 for hard-run bermuda, a fivefold spread. Cool-season grasses take most of that total in autumn; warm-season grasses take it in mid-summer and should get none late. Match the species first, then the rate.

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Anyone deciding whether this weekend is the right time for the autumn lawn feed where they actually live.10 min read

Fall Feed Timing Runs on Soil Temperature, Not the Calendar

The primary fall feed for cool-season grass goes down when the 4-inch soil temperature is falling through 65 to 55 degrees, which lands anywhere from late August to mid-October depending on where you live. The late feed follows when top growth stops and soil is still above 45. Below 40 degrees, stop.

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Anyone reading the guaranteed analysis panel and trying to work out whether the nitrogen in the bag will burn, and how long it will last.10 min read

Urea, Ammonium Sulfate, SCU or Biosolids? Nitrogen Carriers Compared

Burn risk and feed duration belong to the nitrogen carrier, not the brand. Urea is cheap, 46 percent nitrogen and gone in three weeks. Polymer-coated urea costs several times more and meters out over three months. Sulfur-coated sits between them, and everything microbial stops working below about 55 degree soil.

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Homeowners standing in the aisle deciding between a 40 lb bag and a hose-end jug, who want to know which one actually feeds the lawn longer.9 min read

Granular vs Liquid: Where the Nitrogen Actually Ends Up

Liquid wins on speed and loses on duration. A foliar-fed lawn darkens in 1 to 3 days and is finished by week 3; polymer-coated granular takes 7 to 14 days to show and is still releasing nitrogen at week 12. For a fall feed, coated granular carries the application and liquid is a color patch, not a program.

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Anyone who wants a darker lawn without adding a second mowing every week, and needs to know which product buys colour and which one buys clippings.9 min read

Color Without Growth: What Iron Does That Nitrogen Cannot

Iron darkens turf in 24 to 48 hours and adds almost nothing to clipping yield. Nitrogen at 0.75 lb per 1,000 sq ft takes 3 to 5 days and raises clipping yield 35 to 60 percent for the next month. If the complaint is colour and not thinness, the answer is iron, and the correct iron depends entirely on your soil pH.

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Dog owners and parents who have just fertilized and need an actual number of hours, not a shrug.8 min read

How Long Before the Dogs Can Go Back on the Grass?

For plain granular fertilizer with no pesticide in it, the gate is watered in and fully dry, which in practice means 24 hours. Weed-and-feed and any pre-emergent combination product runs 24 to 48 hours minimum. Bone meal and blood meal are the outlier: keep dogs off until every visible granule is gone, because the hazard there is eating it, not touching it.

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Homeowners who want a whole year of applications planned in one go, with the conflicts against seeding and pre-emergent already flagged.10 min read

The Twelve-Month Feeding Calendar, Cool-Season and Warm-Season

Cool-season turf takes roughly 3 to 4 lb of nitrogen per 1,000 sq ft a year with more than half of it landing between late August and November. Warm-season turf takes 3 to 5 lb spread across the growing season and none after about six weeks before first frost. The grids below place every application and flag the months where a feed collides with pre-emergent, seeding or aeration.

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Anyone looking at a yellowing lawn who wants to identify the missing nutrient before buying a bag of the wrong thing.9 min read

Yellow Grass: A Symptom-to-Nutrient Decision Tree

Which leaves are yellow tells you which nutrient is missing. Old leaves fading first points to nitrogen, magnesium or potassium; new growth yellowing while the old leaves stay green points to iron, sulfur or manganese. Applying nitrogen to an iron problem darkens nothing and costs you a season.

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Someone looking at a lawn that went tan or striped within days of fertilizing, who needs to know how much water to put down and whether the grass is coming back.9 min read

Fertilizer Burn Triage: Water, Wait, or Reseed

Water is the treatment and volume is the dose. Light tip scorch needs 0.5 in and recovers in a week or two with no crown loss. Full-area scorch needs about 3 in over five days and takes a month to a month and a half. Sharp-edged spill spots almost never come back, and above roughly 50 percent crown loss reseeding beats waiting.

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