Triple 13 fertilizer, also labeled 13-13-13, typically costs $18-$35 for a 40-pound bag, with an average price near $26. The final price depends on bag size, fertilizer type, retailer, region, and whether delivery or spreading is included.
| Item | Low | Average | High | Notes |
|---|---|---|---|---|
| 40-pound bag | $18 | $26 | $35 | Common granular retail size |
| Per pound | $0.45 | $0.65 | $0.88 | Based on 40-pound bags |
| 50-pound bag | $22 | $31 | $42 | Price and availability vary |
| Bulk purchase | $0.35/lb | $0.55/lb | $0.80/lb | Usually requires larger quantities |
What a 13-13-13 Fertilizer Bag Usually Costs
A standard granular 40-pound bag commonly runs $18-$35, while a 50-pound bag is often $22-$42. Prices near the low end are more likely for basic, uncoated products or sale-priced bags; specialty blends, branded products, and small-store purchases can cost more.
At about $0.45-$0.88 per pound, a 40-pound bag contains 5.2 pounds each of nitrogen, phosphate, and potash, based on its 13-13-13 analysis. It is a general-purpose fertilizer, but the right application rate depends on the crop, lawn, or soil-test recommendation. Assumptions: standard granular product, retail purchase, and no delivery or application charge. For many household projects, budgeting about $26 per 40-pound bag is a reasonable starting point.
How Bag Size, Delivery, and Spreading Shape the Bill
The product is only part of the expense when a project needs several bags or paid application. Retailers may offer a lower per-pound price on larger quantities, but delivery, spreading labor, or equipment rental can offset the savings.
| Quote item | Typical price | What changes it | Example basis |
|---|---|---|---|
| Granular fertilizer | $0.45-$0.88/lb | Brand, bag size, formulation | 40-pound bag |
| Delivery | $10-$60 | Distance and order size | Local drop-off |
| Professional spreading | $50-$150 | Area, access, service minimum | Small residential job |
| Spreader rental | $15-$40/day | Store and equipment type | Push spreader |
| Soil test | $15-$50 | Lab and sample package | Basic nutrient analysis |
Labor estimates often reflect a minimum service charge rather than a simple acreage rate. For a small yard, the minimum may cost more than the fertilizer itself. Compare the delivered and applied total, not just the bag price.
How 13-13-13 Analysis and Project Size Affect Price
Bag size affects checkout cost and unit value: a 10-pound package may cost $8-$15, while a 40-pound bag generally offers a lower price per pound. Bulk pricing can fall to roughly $0.35-$0.80 per pound when the supplier sells by the ton or pallet, but minimum orders and freight may apply.
Application quantity also changes the budget. A 40-pound bag covers 4,000 square feet at 1 pound per 100 square feet, but that rate is not a universal recommendation. Soil tests, crop needs, and label directions should determine the actual rate; applying excess fertilizer can waste money and harm plants or waterways. Calculate the needed pounds from the label rate before buying a large bag or bulk load.
When Does Regional Availability Raise the Bag Price?
Local prices can differ by roughly 5%-15% between markets because of freight, retailer competition, and agricultural supply access. Rural areas near farm suppliers may offer better bulk rates, while urban garden centers may charge more per bag but stock smaller quantities and specialty brands.
Freight matters most for heavy purchases. A 40-pound bag may be easy to collect locally, but pallet or ton orders can incur delivery charges that erase a bulk discount. Ask whether the quote includes unloading, minimum-order fees, and taxes. For a few bags, nearby pickup may beat bulk pricing once delivery is added.
How Much Does Spreading 13-13-13 Add?
DIY spreading usually adds $15-$40 for a one-day push-spreader rental if the homeowner does not own equipment. A professional visit may add $50-$150 for a small property, with larger or difficult-to-access areas priced higher. Contractors may also charge extra for measuring irregular beds or handling multiple application zones.
For example, one 40-pound bag at $26 plus a $20 rental totals about $46 before tax. A two-bag, 8,000-square-foot project could total $52 for fertilizer plus the same rental, assuming the label rate calls for that amount. Spreading costs are often driven by the service minimum, not by how many bags are used.
How to Lower the Cost Without Overapplying
Use a soil test and the product label to avoid buying fertilizer that the site does not need. Measure the treatment area, check the recommended application rate, and compare the price per pound across bag sizes. A larger bag is economical only if the remaining product can be stored properly and used before its quality or condition becomes a concern.
Pickup, seasonal promotions, and combining orders with a neighbor can reduce delivery costs. Avoid paying for professional spreading on a simple, accessible lawn if a suitable spreader is already available. Do not reduce the application rate blindly to save money; match it to the intended use and label directions. The safest savings usually come from accurate quantities and avoiding unnecessary delivery or labor.
Is Triple 13 Cheaper Than Buying Separate Nutrients?
For small general-purpose jobs, one balanced 13-13-13 bag is often simpler and less expensive than buying separate nitrogen, phosphorus, and potassium products. Separate nutrients can make sense when a soil test calls for an uneven nutrient mix, since applying a balanced fertilizer could add more of one nutrient than the site needs.
Prices vary by product and package, but specialty single-nutrient fertilizers may cost about $0.50-$1.50 per pound. That price alone does not determine value: the required nutrient amount and application rate matter. Choose by the soil or crop requirement, not by the lowest price printed on the bag.
When Bulk 13-13-13 Orders Make Financial Sense
Bulk or pallet purchases can lower the per-pound price by about 10%-25% compared with buying individual retail bags, depending on supplier and quantity. A ton at $0.35-$0.80 per pound would cost $700-$1,600 before freight, taxes, or any handling charge, so it is generally practical only when the full quantity will be used.
Before ordering, confirm the analysis, granule type, minimum quantity, delivery access, and whether the quoted rate includes freight. Keep fertilizer dry and in its original labeled packaging. A bulk discount is worthwhile only when delivery and storage costs do not exceed the savings.