By Kyle Caldwell, Owner & Agronomist, Century Outdoor Services | Austin, TX
If there’s one question I hear more than any other as the owner and agronomist of Century Outdoor Services, it’s, “When should I fertilize my lawn?” The answer isn’t as simple as picking a month on the calendar. Here in Austin, our long growing season, high pH soils, summer heat, and periodic drought all affect how and when your lawn can use nutrients.
One of the biggest mistakes homeowners make is applying fertilizer based solely on the calendar or using the same fertilizer year-round. Warm-season grasses like Bermuda, St. Augustine, and Zoysia all have different growth habits, but they share one important characteristic—they should be fertilized when they are actively growing, not while they are dormant.
At Century Outdoor Services, we’ve built our 9-round fertilization program around how lawns actually grow in Central Texas. Instead of making a few heavy fertilizer applications each year, we make seasonal adjustments that provide the nutrients your lawn needs at each stage of its growth cycle. This approach produces healthier turf, stronger roots, better color, and more consistent results throughout the year.
Many homeowners spend a lot of time deciding which fertilizer to buy but overlook something even more important: timing.
Even the best fertilizer won’t deliver good results if it’s applied at the wrong time. Fertilizing too early can encourage weeds and waste nutrients before the grass is actively growing. Fertilizing too late in the season may stimulate unnecessary growth when the lawn is preparing for dormancy.
The goal is to apply nutrients when the grass can use them most efficiently. That means adjusting your fertilization schedule based on the season, soil temperatures, and the natural growth cycle of your lawn.
Spring is when many homeowners get excited to fertilize, but patience is important.
Although temperatures begin warming in March, most lawns in Austin are still coming out of dormancy. Bermuda grass often greens up earlier than St. Augustine or Zoysia, depending on weather conditions.
Rather than rushing to fertilize, wait until your lawn has greened up and is actively growing. Once the grass begins producing new leaves consistently, it can effectively use the nutrients you’re applying.
Early spring fertilization helps:
Applying fertilizer before active growth begins often results in wasted nutrients and inconsistent results.
This is typically the most important fertilization period of the year for Central Texas lawns.
During late spring, warm-season grasses enter their most active growth phase. Temperatures are ideal, roots are expanding rapidly, and the lawn is capable of using nutrients efficiently.
Proper fertilization during this period helps produce:
This is also when maintaining a consistent fertilization schedule becomes important. Instead of one large fertilizer application, smaller seasonal applications provide more consistent growth while reducing stress on the lawn.
Austin summers are demanding on every lawn.
Extended periods of high temperatures, watering restrictions, and drought stress make nutrient management especially important.
Many homeowners assume they should stop fertilizing completely during the summer. In reality, healthy lawns continue to benefit from proper nutrition, but the program should be adjusted for seasonal conditions.
At Century Outdoor Services, we make seasonal adjustments throughout the summer rather than applying the exact same fertilizer used earlier in the year. This helps maintain color and overall plant health while avoiding excessive growth that can increase stress during extreme heat.
Summer fertilization should always be paired with proper irrigation and mowing practices to maximize results.
As temperatures begin to cool, lawns recover from the stress of summer.
Fall fertilization focuses less on producing rapid top growth and more on helping the lawn rebuild energy reserves before winter dormancy.
Benefits of fall fertilization include:
Many homeowners mistakenly stop thinking about lawn care after summer ends, but fall is actually one of the most valuable times to strengthen your lawn for the seasons ahead.
Warm-season grasses become dormant during the winter months in Central Texas.
Because the lawn is no longer actively growing, routine nitrogen fertilization is generally unnecessary. Instead, winter is an excellent time to prepare for the following growing season through proper cultural practices and planning.
Allowing the lawn to rest during dormancy helps it emerge healthier when spring arrives.
Although Bermuda, St. Augustine, and Zoysia all thrive in Central Texas, they don’t all require the same fertility program.
Bermuda has the highest nutrient demand of the three common lawn grasses found in Austin.
Its aggressive growth habit allows it to recover quickly from mowing, traffic, and summer stress, but that performance depends on maintaining adequate fertility throughout the growing season.
A properly fertilized Bermuda lawn develops excellent density, vibrant green color, and outstanding recovery.
St. Augustine requires a more balanced fertilization approach.
Too much fertilizer can produce excessive top growth that increases mowing requirements and may place unnecessary stress on the lawn during periods of heat and humidity.
A consistent fertilization program helps maintain color and density without encouraging excessive growth.
Zoysia is naturally slower growing than Bermuda and generally requires less fertilizer to maintain an attractive appearance.
Many homeowners appreciate Zoysia because it maintains excellent density and color with fewer growth flushes throughout the season.
While it still benefits from regular fertilization, the focus should be on maintaining steady, healthy growth rather than encouraging rapid expansion.
| Grass Type | Fertility Requirement | Growth Rate | Fertilization Approach |
|---|---|---|---|
Bermuda | High | Fast | Regular applications throughout the growing season |
St. Augustine | Moderate | Moderate | Balanced seasonal nutrition |
Zoysia | Moderate to Low | Slow | Consistent nutrition without excessive growth |
One of the biggest differences between professional lawn care and occasional DIY fertilization is consistency.
Many homeowners fertilize once or twice each year and expect season-long results. In reality, your lawn’s nutritional needs change throughout the growing season.
That’s why our 9-round program is built around seasonal adjustments instead of repeating the same application every visit. As weather conditions change, so do your lawn’s nutrient requirements.
This approach allows us to support healthy growth in the spring, maintain turf quality during the heat of summer, and prepare the lawn for recovery in the fall. Rather than chasing problems after they appear, we’re continually managing the lawn’s health throughout the year.
A beautiful lawn doesn’t come from applying more fertilizer—it comes from applying the right nutrients at the right time.
Whether you have Bermuda, St. Augustine, or Zoysia, following a consistent fertilization schedule tailored to Austin’s climate will produce healthier roots, improved color, and stronger turf throughout the year.
At Century Outdoor Services, we’ve designed our fertilization program around the unique growing conditions of Central Texas. By making seasonal adjustments instead of relying on a one-size-fits-all approach, we’re able to help homeowners achieve healthier lawns while taking the guesswork out of lawn care.
If you’re looking for a healthier, greener lawn without wondering when or what to fertilize next, our team is here to help.
For Weed Control and Fertilization, Aeration, and Moisture Manager, the price is calculated by every 1,000 ft². Click here to see how we determine our prices.
If you’d like to receive an estimate, you can call us at (512) 786-1694 or send us a quick message.
No, Century does not require contracts for residential services. We set up a Service Agreement for your property based on the services accepted. This agreement requests at least a 24-hour notice of cancellation of service.
We’ve provided the most reliable weed control & fertilization to customers in Austin, Bee Cave, Dripping Springs, and nearby areas in Texas since 2013.
