Slow Release Lawn Fertilizers
Shop slow release lawn fertilizers to feed your grass gradually over time. Compare options by nutrient blend, coverage area, and application directions to find a fit for your lawn size and grass type. Check the label for when to apply and whether watering is needed after spreading.
Best Of FAQ
Slow release means some or all of the fertilizer’s nutrients become available gradually rather than all at once. The release process can depend on soil temperature, moisture and microbial activity.
Those numbers show the percentages by weight of nitrogen, phosphate and potash, in that order. They describe the fertilizer’s nutrient analysis, not how quickly those nutrients are released.
The terms are often grouped together, but they describe different release mechanisms. Slow release generally refers to nutrients that become available through gradual breakdown or limited solubility. Controlled release typically involves a coating that regulates nutrient release. Check the label for the fertilizer’s specific description.
Check the guaranteed analysis and any nearby footnotes for terms such as slowly available nitrogen or water-insoluble nitrogen. Read the percentages carefully: a percentage of the whole fertilizer is different from a percentage of its total nitrogen.
Start with your grass type and its active growing season. Cool-season lawn feeding schedules commonly emphasize fall, while warm-season schedules generally center on late spring and summer. Follow the fertilizer label and local extension guidance to plan around conditions in your area.