The recommended frequency for fertilizing your lawn generally ranges from twice to four times per year, depending on grass type, climate, soil condition, and fertilizer type.
- A common guideline is to fertilize about three times annually: in spring, summer, and autumn, with spring being the most important if only one application is done
- For cool-season grasses (common in northern climates like Canada), fertilizing twice a year—in spring and fall—is usually sufficient and easier to manage
. Over-fertilizing cool-season lawns in spring and summer can encourage weeds and fungus.
- Warm-season grasses may benefit from fertilizing about once a month during their growing season
- Some lawn care experts recommend fertilizing at least four times per growing season with about 1 pound of nitrogen per 1,000 square feet each time for optimal growth
- Slow-release fertilizers should be applied every 6-8 weeks, while immediate-release types may need applications every 4-6 weeks
- Over-fertilizing can harm grass roots and cause scorching, so it’s important not to exceed recommended amounts and timing
- Minimum fertilizing frequency to maintain a healthy lawn is at least twice yearly, according to landscape designers
In summary, a typical fertilizing schedule for most lawns is:
- Early spring (to promote growth after winter dormancy)
- Late spring or early summer (mainly for warm-season grasses)
- Late summer or early fall (to help recovery and prepare for winter)
- Possibly an additional application in summer for warm-season grass or if lawn use is heavy
Adjust frequency based on your grass type, soil test results, and local climate conditions. Always follow fertilizer package instructions and consider soil testing for precise nutrient needs. This balanced approach ensures healthy, green lawns without the risks of over-fertilization.
