Your Southern Lawn is Waking from Dormancy – Do These 4 Things Now for Greener, Thicker Grass in Spring

Now spring is here and temperatures are rising across the southern United States, many of us are turning our attention to bringing our lawns back to life after winter. But, while the urge to jump-start spring growth is understandable, turf professionals say many well-intentioned lawn care routines can actually work against warm-season grasses.

Bermuda, St. Augustine and Zoysia – the grasses that dominate southern lawns – operate on a different seasonal rhythm than cool-season grasses grown in the North. Before proceeding with lawn care, it's key to understand what warm-season grass needs to avoid common Southern lawn care mistakes in spring. Failing to provide the right care now can slow down recovery and weaken turf before the heat of summer arrives.

So, if you're a newly settled northern transplant, just upgraded from a condo to your own property, or simply want to have the most enviable lawn on your block, keep reading to find out what southern lawn care experts say are the top four mistakes to avoid this season.

Understanding Warm-Season Lawn Timing

Ultimately, most common Southern lawn care mistakes in spring stem from misunderstanding how warm-season grasses grow.

‘The biggest difference is timing,’ Jason Keeley, a turf expert with Mowing Magic, says.

‘Cool-season grasses such as Fescue start actively growing early in spring, but warm-season grasses stay dormant longer and really begin growing once soil temperatures consistently reach about 65°F.’

You can get an accurate account of your soil’s temperature with the Luster Leaf Rapitest Digital Soil Thermometer available on Amazon.

1. Rushing Spring Lawn Care

One of the biggest issues experts see is homeowners starting spring lawn care too early. A few warm days can make it feel like spring has arrived, but warm-season grasses are often still dormant beneath the soil.

Fred Trejo, owner of lawncare company Tierra Viva LLC, says impatience is a common problem.

‘The biggest mistake I see is people trying to rush spring. In the South, homeowners get a warm week in February or March (known as false spring) and assume the lawn is ready to wake up.

'They start fertilizing, watering heavily, and sometimes even treating weeds aggressively before the grass is actively growing,' he describes.

Warm-season turf responds primarily to soil temperature rather than air temperature, which means it wakes up more slowly than many people expect.

‘Warm season grasses like Bermuda, St. Augustine and Zoysia need consistent soil temperatures before they really come out of dormancy,’ Fred adds. ‘If you push them too early, you can actually weaken the turf and encourage weeds instead.’

Jason says the same misunderstanding often leads to unnecessary interventions.

‘One of the biggest mistakes is treating warm-season lawns like they’re already in full growth mode the moment temperatures warm up,’ Jason says.

‘If homeowners fertilize or push growth too early, the lawn isn’t ready to use those nutrients yet,' he adds.

That visual mismatch can confuse homeowners.

‘Many homeowners get tripped up because a lawn can look brown or thin while it’s still dormant, and they assume something is wrong,’ Jason explains. ‘In reality, that’s just the natural cycle of warm-season turf.’

You can use a soil thermometer (from Amazon) to monitor for consistent soil temperatures over 3-5 consecutive days before jumping in with spring lawn care.

One thing that doesn’t need to wait is managing weeds, according to Fred.

‘Don’t skip pre-emergent weed control,’ he advises. ‘Many of the weeds that frustrate homeowners all summer actually start germinating in early spring.’

While fertilizing can wait, get a jump on controlling summer weeds with a pre-emergent herbicide such as Scotts WeedEx available at Lowe’s.

Fred Trejo

Fred Trejo is the owner of Tierra Viva Landscapes, a Dallas-Fort Worth landscaping company specializing in residential and commercial landscape care.

Jason Keeley

Jason Keeley is a seasoned lawn care professional and robotic mower expert with a passion for innovation in outdoor maintenance. He launched Mowing Magic in 2019 to help homeowners and businesses to achieve perfectly manicured lawns with less effort.

2. Fertilizing Too Early

Early fertilizing is one of the biggest Southern lawn care mistakes in spring.

While fertilizing your lawn seems like an easy way to encourage growth, professionals warn that doing so before the lawn is ready can create problems.

Jason explains why timing matters. ‘Applying fertilizer before the lawn has fully come out of dormancy can encourage weak top growth before the root system is ready. In some cases, it can also make lawns more susceptible to disease or late cold snaps,' he says.

Valerie Smith from Sod Solutions agrees:

‘One major mistake is fertilizing before the final freeze of the season. Early warm weather can make it seem like spring has arrived, but late winter cold snaps can still occur.

'If fertilizer is applied too early, it can encourage new growth before the lawn is ready. When freezing temperatures return, that growth can be damaged,' she explains.

Fred says the nutrients often benefit weeds more than the turf itself.

‘When warm season grass is still dormant, fertilizer does not help the lawn nearly as much as people expect. What it often does instead is feed weeds,' he explains.

A practical visual signal can help determine when it’s safe to fertilize.

‘I usually tell homeowners to wait until the lawn has clearly greened up and has been mowed at least once or twice before applying fertilizer,’ Fred suggests. ‘That tells you the grass is actively growing and can actually use those nutrients.’

Once the grass is ready to be fed, apply a slow-release lawn fertilizer such as Milorganite Nitrogen Fertilizer available at Ace Hardware to provide steady nutrient availability without forcing early growth.

Valerie Smith

Valerie Smith is a Content Strategist at Sod Solutions, where she develops homeowner-focused turfgrass education through Sod University. She collaborates closely with industry experts to translate technical turfgrass knowledge into clear, accessible lawn care guidance.

3. Watering Too Frequently

Watering habits are another major source of lawn trouble in the South, especially early in the season when natural rainfall is often sufficient.

Valerie says frequent irrigation actually weakens turf by limiting root growth.

‘Light daily watering encourages shallow roots because the grass doesn’t have to grow deeply to access moisture,’ she says. ‘Instead, lawns should be watered deeply and less often so roots grow further into the soil. Deeper roots help grass tolerate summer heat and drought stress.’

Fred says irrigation often starts far earlier than necessary.

‘The biggest lawn watering mistake is starting irrigation too early and watering too frequently. Spring weather in the South usually brings periodic rain and cooler nights so lawns often don’t need much supplemental irrigation yet,' he explains.

Valerie notes that most lawns need surprisingly little water in spring. ‘For most lawns, about 1" of water per week including rainfall is sufficient.

‘Watering grass during early morning hours allows water to soak into the soil efficiently while minimizing evaporation and disease risk,' she explains.

Get an accurate measurement of how much rainfall your yard receives using the AcuRite 5-in. Rain Gauge available at Amazon.

She also cautions against watering late in the day. ‘Watering at night leaves grass wet for long periods, which can encourage fungal diseases.’

4. Mowing Too Low

Another one of the common Southern lawn care mistakes is cutting grass too short when it first begins greening up. While you may want the lawn to look tidy after winter, aggressive mowing can stress turf that is still recovering.

‘The biggest problem I see is mowing too low after winter,’ says Joseph Haynes from Down to Earth Landscape & Irrigation. ‘It’s really easy to feel the need to drop the mower deck in an effort to ‘show’ visual improvement.

'In reality it stresses the turf which encourages weeds and slows down the overall spring recovery period,' he says.

He also recommends keeping mower height higher than many homeowners expect.

‘If you have a push-type mower, I would suggest keeping the deck on the highest setting year round, especially for St. Augustine. The grass is going to grow to the same height regardless. If the grass is not long enough to cut at the highest setting, it doesn’t need to be cut,' Joseph advises.

Joseph adds that blade maintenance also matters for lawn health.

'Avoid mowing with dull blades. Dull mower blades tear grass instead of cutting it cleanly, which creates openings for disease and stress in the turf. Keeping blades sharp helps maintain healthier gras,' he says.

The Arnold Universal Lawn Mower Blade Sharpening Kit available at Home Depot is an easy way to keep your mower blades in sharp condition.

For more information, check out our guide to when to start mowing your lawn in spring.

Joseph Haynes

Joseph Haynes is Regional Business Development Manager - Golf Division for Down To Earth Landscape & Irrigation. He advises on a wide range of lawn care issues.

FAQs

Does Warm-Season Grass Go Brown in Winter?

Yes, warm-season grasses typically go brown in winter as they enter a dormancy period. It's a normal stage in their lifecycle and they tend to bounce back with warmth and rain in spring.

In southern lawns, where summer heat places heavy stress on turf, giving grass the right start in spring can make all the difference. Once the heat hits, the care you took in spring goes a long way in protecting your lawn in a heatwave.

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