Scotts Spreader Setting for Lesco 20-0-10 (Chart)
There is no dependable universal Scotts dial number for LESCO 20-0-10. The correct setting depends on your exact Scotts spreader model, the fertilizer’s granules, and the label rate. Use a matching product-and-model chart if available. If not, weigh and apply a measured test amount, then adjust and repeat until output matches the label rate.
Remember figuring out a spreader dial before the first spring feeding? A familiar number can feel like a shortcut, but one setting may not work across different spreaders or fertilizer blends. I use the product label and a measured calibration test instead. That takes a little longer up front and helps prevent thin coverage, wasted product, and turf damage.
What setting should I use for LESCO 20-0-10?
A spreader setting controls how wide the gate opens and how much fertilizer flows out. There is no verified dial number that fits every Scotts spreader and every LESCO 20-0-10 product. Use a number only when it matches your exact spreader model and product, or calibrate your spreader to the label rate.
| Your situation | Best next step | What not to assume |
|---|---|---|
| The LESCO label lists your exact Scotts model | Use the listed setting and label directions | That the same setting fits other Scotts models |
| A Scotts chart lists the exact LESCO product | Confirm the product formulation and model before using the number | That a setting for a different fertilizer is equivalent |
| Neither source lists a match | Calibrate over a measured area by product weight | That a guessed dial number is accurate |
| You have a Scotts drop spreader | Calibrate it separately using its manual and a measured test | That a rotary spreader setting transfers |
A number found for another Scotts model is not a confirmed setting for yours. The same is true of a number for another fertilizer. If you cannot confirm a match, use calibration rather than borrowing a dial setting.
Understand the 20-0-10 grade and calculate the product rate
The numbers on a fertilizer bag show nutrient percentages by weight, not the amount to spread or the size of the granules. A 20-0-10 grade contains 20% nitrogen, 0% phosphate, and 10% soluble potash. The product label—not the grade alone—sets the permitted use and application rate.
To calculate how much product supplies a chosen nitrogen rate, divide the nitrogen target by 0.20. For example, a target of 1.0 pound of nitrogen per 1,000 square feet requires 5.0 pounds of product per 1,000 square feet. Use that rate only if it is allowed by the product label and fits your turf plan.
| Desired nitrogen rate | Product needed per 1,000 sq ft | Product needed for 500 sq ft |
|---|---|---|
| 0.5 lb N | 2.5 lb | 1.25 lb |
| 0.75 lb N | 3.75 lb | 1.875 lb |
| 1.0 lb N | 5.0 lb | 2.5 lb |
These are rate calculations, not recommendations for how much nitrogen your lawn needs. Follow the label’s rate, timing, and use directions. If its instructions do not support a rate in the table, do not use that rate.
Measure only the area you intend to treat. For a rectangular lawn, multiply length by width. Leave out planting beds, pavement, and any other untreated areas. For an irregular lawn, divide it into smaller rectangles, calculate each one, then add their areas.
Spreader setup, product label, and safety preparation
Preparation means checking that the product, spreader, lawn area, and application conditions are suitable before fertilizer enters the hopper. Read the product label and safety data sheet (SDS), then inspect the spreader and measure the target area. This helps prevent a wrong rate, uneven output, or fertilizer reaching places you did not intend to treat.
Before setting the dial, confirm the label is for the product in your bag. A shared 20-0-10 grade does not prove that two products have the same granule size or spreading behavior. Check that the label permits use on your turf and review its rate, timing, and weather restrictions.
Wear any protective gear required by the label. Check the spreader for residue, moisture, damage, or a gate that sticks. Make sure the hopper is clean and dry, and that the controls, agitator, and tires work as intended. A blocked opening or uneven movement can change the flow.
I treat the rate and the dial as separate checks. The label tells me how much product is permitted for the area; the spreader setting controls how product leaves the hopper. A dial number alone cannot confirm that the lawn will receive the correct amount.
Calibrate a Scotts spreader to the label rate
Calibration is a measured test that compares the amount of fertilizer dispensed with the amount required for a known area. Use a setting from an exact product-and-model chart when one is available. If there is no confirmed match, calibrate the spreader instead of treating a suggested dial number as verified.
Start with a test area you can measure. Work out the product target using the label rate and the area. For example, at a label rate of 5 pounds per 1,000 square feet, a 500-square-foot test area needs 2.5 pounds of product.
- Weigh the amount of fertilizer you plan to use for the test. A suitable scale helps you measure product by weight rather than judging the amount by volume.
- Set the gate to the matching chart setting, if you have one. Without a match, choose a conservative starting point on the dial; do not treat it as the final setting.
- Use a steady walking pace over the measured area. Keep the spreader moving before opening the gate, and close it before stopping or turning.
- Weigh the product left in the hopper. Compare the amount used with the target for that test area.
- If output is too high or low, adjust the gate and repeat on a measured area. Do not guess based on how full the lawn looks.
Use the spreader’s manual and the fertilizer label for any specific setup or pattern directions. A calibration test is only useful when the area, walking pace, and product weights are measured consistently. If the spread pattern or flow is erratic, stop and check the spreader before continuing.
Worked calibration examples
These examples show the math and process. They are not reports of particular homeowners, and they do not establish a Scotts dial setting.
| Example | Test area | Assumed label rate | Target product | Calibration check |
|---|---|---|---|---|
| Small front lawn | 500 sq ft | 5 lb per 1,000 sq ft | 2.5 lb | Weigh product before and after the test |
| Larger lawn section | 1,000 sq ft | 3.75 lb per 1,000 sq ft | 3.75 lb | Compare actual use with the target |
| Drop spreader | 500 sq ft | 5 lb per 1,000 sq ft | 2.5 lb | Calibrate separately; do not transfer rotary settings |
In the first example, the 5-pound rate is used only to show the calculation. Check that your own product label permits it. For the drop spreader, the target amount comes from the same area-and-rate math, but the spreader needs its own calibration.
Apply the fertilizer evenly and avoid overlap
Application means distributing the measured product over the treated area at a steady pace without doubling coverage or spreading beyond the lawn. Follow the label and any matching chart for the spread pattern. Keep the gate closed while stopped, and keep granules off pavement, water, and plants that are not part of the treatment area.
Before starting, divide the lawn into clear passes or sections so you can track where you have spread. Use the overlap pattern specified by the label or chart; do not add extra overlap to make coverage “safer.” A doubled pass can raise the rate above the intended amount and may damage turf.
Keep moving before opening the gate, and close it before you stop, turn, or cross an area already treated. Maintain a steady walking pace. If the flow changes, the gate sticks, or the spread pattern looks uneven, stop and inspect the equipment rather than carrying on with an uncertain rate.
Sweep granules from pavement back onto the lawn where appropriate, following label directions. Do not leave fertilizer where it can wash toward a drain or water. If you cannot tell whether an area received a full pass, avoid blindly applying another full pass over it.
Spreader cleaning, inspection, and calibration checks
Cleaning removes fertilizer residue that can affect the spreader later or contribute to corrosion. After application, close the gate, empty the hopper, and clean the spreader as directed by its manual and the product label. Check the gate and other working parts before storing the equipment.
A useful calibration check begins before each job, especially if you change products, spreader models, or application rates. Even the same fertilizer grade may not have the same granules as another product. If you switch from a rotary to a drop spreader, calibrate the new spreader separately.
After spreading, look over the gate, agitator, hopper, wheels, and controls for residue or damage. If fertilizer flow was uneven, do not assume the dial is correct next time. Clean or repair the spreader as needed, then repeat the measured test.
Fertilizer and equipment storage
Storage means keeping the remaining product and spreader in the condition directed by their labels and manuals. Close the fertilizer package as directed and store it in a suitable place. Leave the spreader clean and dry after use, and follow its manual for storage steps.
Do not put leftover product back into a bag unless the label allows it. Keep product in its original labeled package, and follow its storage and handling instructions. Store it where children and pets cannot reach it, as directed by the label.
Conclusion: use a verified chart or measure the output
The useful answer is not a dial number copied from another Scotts spreader. It is the setting listed for your exact model and product, when available, or a setting confirmed by weighing product over a measured test area. Calculate the target from the label rate, keep the application even, and stop if output becomes inconsistent.
FAQs
What setting should I use on a Scotts spreader for LESCO 20-0-10?
Use a chart setting only if it names your exact Scotts model and product. Otherwise, calibrate the spreader to the product label rate by weighing the fertilizer used over a measured area.
Does every Scotts rotary spreader use the same setting?
No. Settings can vary by spreader model, fertilizer formulation, and application rate. A setting from another model is not a verified match.
Can I use a Scotts rotary-spreader setting on a drop spreader?
No. A drop spreader needs separate calibration. Do not transfer a rotary-spreader dial number to it.
What does 20-0-10 mean?
It means the fertilizer contains 20% nitrogen, 0% phosphate, and 10% soluble potash by weight. The grade does not tell you the product’s application rate or granule size.
How much 20-0-10 supplies 1 pound of nitrogen?
Five pounds of a 20-0-10 product supply 1 pound of nitrogen because nitrogen makes up 20% of the product by weight. Apply that amount only if the product label permits the rate.
How do I calculate the product needed for a small test area?
Multiply the label rate per 1,000 square feet by the test area, then divide by 1,000. At 5 pounds per 1,000 square feet, a 500-square-foot test needs 2.5 pounds.
What if I cannot find a chart for my exact spreader and product?
Use a measured calibration test. Weigh the target amount, spread over a known area at a steady pace, weigh what remains, then adjust and repeat.
Can I use a setting listed for another 20-0-10 fertilizer?
Not as though it were exact. A matching grade does not confirm matching granules or spreading behavior. Check for a chart that identifies your product and model, or calibrate.
Can overlapping passes damage the lawn?
Yes. Extra coverage can push the actual fertilizer rate above the label rate and may damage turf. Follow the stated spread pattern and avoid covering a section twice.
What should I do if the spreader flow is uneven?
Stop. Check for residue, a blocked opening, a sticking gate, or another equipment problem. Resume only after the spreader works consistently and you can confirm the rate.
(This article was written by one of our staff writers, Victor Dempsey. Visit our Meet the Team page.)
