The Spring Lawn Care Calendar: Exactly What to Do in March, April & May

TL;DR: The best way to care for your lawn in spring is to follow soil temperature, not the calendar. Most lawns should focus on weed prevention around 50-55°F soil temps, soil health improvements in early spring, and light fertilization once grass begins actively growing.

Why Spring Lawn Temperature Timing Matters More Than the Date

Spring for Floridians starts at an entirely different moment than it does for Minnesotans, and even the experience of “early spring” can differ greatly in temperature, precipitation, and whether there is snow on the ground. Even year to year, ideal timing for spring lawn applications can differ in the same regions as winter extends or warm-ups happen early.

When you think about when to start timing your spring lawn treatments, consider not just the temperature in the air but your soil temperature. These determine your grass (and weed!) growth cycles. 

Soil Temperature	What’s Happening in Your Lawn
45-50°F	Turfgrass dormant, waking up slowly
50-55°F	Weed seeds begin to germinate
55-60°F	Root growth begins
60-65°F	Active grass growth

How do you know what your soil temperature is? You have a few options:

• Buy an inexpensive soil thermometer and take temperature readings weekly.
• Go online to a soil temperature map like Greencast to get your reading.
• Subscribe to a service like Lawnbright, which monitors your soil temps and sends you products when they’re ready to be applied.

The 15-Minute Spring Lawn Calendar

The point of having a healthy lawn isn’t to spend your weekends taking care of it. If you’re smart about timing and what you are applying to your lawn, you execute a series of tasks that rarely take more than 15 minutes, and will pay off for the long-term health of your lawn and soil.

Here’s a simple checklist. Take it one weekend at a time and you’ll be enjoying summer on thick, green grass before you know it.

Timing	15-Minute Task	Why It Matters
Early spring	Rake matted grass and dethatch your lawn	Helps to improve air and nutrient flow to roots, allowing products to be more effective and roots to grow deeper
Soil temps ~55°F	Apply pre-emergent	Stop crabgrass and other weeds before they sprout
Early spring	Aerate compacted soil	Improve nutrient absorption and increase effectiveness of products
Active lawn growth	Apply natural fertilizer	Support deeper roots and healthier soil

 

Spring Lawn Care by Region

As temperatures vary across the nation, so does grass growth. The US is one of the most complex places to provide lawn care advice due to the variety of climate, soil types and grass types. But there are some general rules you can go buy in a normal season in any individual region.

Northeast & Midwest Spring Lawn Calendar

Month	What to Do
March	Light cleanup, rake and dethatch
April	Aerate (liquid or mechanical), apply pre-emergent
May	Apply fertilizer and spot weed control

 

Lawn care in the Northeast and Upper Midwest is shaped by long winters and cool season grasses like Kentucky bluegrass, perennial ryegrass, and tall fescue.

Cool Season Grass Growth

These grasses actually grow best in cooler temperatures, which means spring is one of the most important times to strengthen your lawn. Most lawns in this region are made up of grasses that prefer moderate temperatures between 60-75°F. 

Common lawn grasses include:

• Kentucky bluegrass: Dense, dark green lawn with good cold tolerance
• Perennial ryegrass: Fast germination and strong spring growth
• Tall fescue: Deeper roots and better heat tolerance.

These grasses wake up slowly after winter, but grow aggressively once soil temperatures reach about 55°F. That’s why early spring lawn care in this region focuses on improving soil conditions, preventing weeds before they sprout, and encouraging deeper root growth.

Spring sets the foundation for how well the lawn handles summer heat and drought stress.

Winter Damage & Snow Mold

Another challenge in northern lawns is winter damage. Long periods of snow cover can lead to issues like:

Issue	What Causes It
Snow mold	Fungal growth under melting snow
Matted grass	Snowpack pressing grass flat
Salt damage	Road salt washing into lawns

Most of this damage looks worse than it actually is. Once temperatures warm and the lawn dries out, grass often recovers naturally with light raking and improved airflow.

The goal in early spring is to simply gently wake up the lawn and help it resume normal growth.

Southeast Spring Lawn Calendar

Month	What to Do
Late February / Early March	Apply pre-emergent
March	Aerate, begin light fertilization as grass begins active growing
April	Spot weed control

In the Southeast, most lawns are made up of warm-season grasses like Bermuda, Zoysia, and St. Augustine. These grasses growth best in heat and full sun, which means they behave differently than northern lawns in spring.

Warm Season Grass Dormancy

Warm-season grasses spend winter in a dormant state, where growth stops and the lawn turns tan or brown. Common grasses in this region include:

• Bermuda grass: Extremely durable and heat tolerant
• Zoysia grass: Dense turf with good drought tolerance
• St. Augustine grass: Popular in coastal and humid climates.

These grasses don’t begin actively growing again until soil temperatures reach around 65°F. Until then, the lawn may look brown even though it’s healthy underground. 

Spring lawn care in this region focuses on preventing weeds early, improving soil conditions, and waiting to fertilize until the lawn begins growing and is green again. Applying fertilizer too early can actually encourage weeds instead of grass.

Long Growing Seasons

Another defining feature of southeastern lawns is their long growing season. Warm temperatures and mild winters allow weeds to establish easily, including:

• Crabgrass: Germinates early in warm soil
• Spurge: Loves hot, dry conditions
• Nutsedge: Thrives in moist soils

Because these weeds start early, prevention is the key strategy. Once warm-season lawns are in full growth mode, they grow quickly and naturally crowd out many weeds, but they need a strong start.

Mid-Atlantic & Central US Spring Lawn Calendar

Month	What to Do
March	Apply pre-emergent
Late March / Early April	Aerate and prepare soil through raking and dethatching
May	Fertilize fescue lawns

Spring lawn care can be tricky in the Mid-Atlantic and Central US. Many lawns in states like Virginia, Kentucky, Missouri and Kansas sit in what turf scientists call the “transition zone.” This means that the climate swings between conditions that favor cool-season grasses and conditions that favor warm-season weeds. 

As a result, spring lawn care in this region requires a little more strategy.

Mixed Grass Types

Unlike the Northeast (mostly cool-season lawns) or the deep South (mostly warm-season lawns), many yards in this region contain a mix of grasses.

You might find:

• Tall Fescue: Handles heat better than other cool season grasses.
• Kentucky Bluegrass: Provides density and deep color
• Ryegrass: Helps with fast establishment in overseeding.

These grasses all grow well in spring, but have different tolerances for heat and drought later in the season. So for these regions, Lawnbright plans focus on strengthening root systems early, improving soil health, and avoiding overly aggressive fertilization.

A strong root system helps these grasses survive the region’s hot, stressful summers.

Heavy Weed Pressure

This region also experiences some of the highest weed pressure in the country. Long growing seasons allow for multiple weed cycles, while mild winters mean many weed seeds survive. Hot summers, meanwhile, weaken cool-season grasses, which creates open space for weeds.

Common spring weeds in the Mid-Atlantic and Central US include:

• Crabgrass: Germinates when soil temps reach 55°F
• Chickweed: Thrives in cool spring weather
• Henbit: Often appears after mild winter
• Clover: Moves into thin turf areas.

If weeds aren’t prevented early in the season, they can quickly outcompete grass in the warmer months. Spring lawn care in this region typically focuses on early weed prevention, thickening the lawn canopy, and building healthier soil. A thicker, healthier lawn is the best natural defense against weeds.

Texas & Southwest Spring Lawn Calendar

Month	What to Do
February	Apply pre-emergent
March	Aerate and prepare soil through raking and dethatching
April	Fertilize Bermuda lawns

 

Lawns in Texas and the Southwest face a different challenge than most of the country: heat and water stress. Spring lawn care here is less about recovering from winter and more about preparing for intense summer conditions.

Heat-Adapted Grass Types

Most lawns in this region use grasses that tolerate extreme heat and drought, such as:

• Bermuda grass: Extremely heat and drought tolerant
• St. Augustine grass: Handles southern humidity and shade
• Buffalograss: Very drought resistant and low maintenance

These grasses begin growing earlier than northern lawns, often late February through March. Because growth starts sooner, spring lawn care tasks also happen earlier.

Water and Soil Challenges

Soil in many southwestern areas tends to be dense, alkaline, or compacted, which can make it harder for grass roots to absorb water and nutrients. This creates a few common challenges, such as water runoff and drought stress.

For this reason, spring lawn care focuses heavily on improving soil structure, encouraging deeper roots and helping the lawn retain moisture. A lawn with deeper roots is far more resilient when temperatures climb above 90-100°F later in the season.

The 15-Minute Lawnbright Spring Plan

Spring lawn care doesn’t need to take over your weekends. In fact, most of the tasks that make the biggest difference for your lawn can be done in 15 minutes or less.

At Lawnbright, we focus on a few key steps that support healthy soil, strong roots, and natural weed resistance. Instead of overwhelming your lawn with heavy treatments, the goal is to work with your lawn’s natural growing cycle

Here’s the simple approach we recommend.

Step	Lawnbright Product	What It Does
Improve soil	Aeroflow	Reduces soil compaction and improves nutrient absorption
Prevent weeds	Weed Wipeout	Stops crabgrass and other weeds before they germinate
Feed lawn	Total Lawn, or other appropriate fertilizer	Provides balanced nutrients for healthy growth. Plan subscribers will receive fertilizer tailored to their soil test.
Fix patches	North Star Grass Seed	Repair areas damaged by salt, pets, or winter stress

Step 1: Improve Your Soil First

Healthy lawns start below the surface. If soil is compacted, water and nutrients can’t reach the roots where they’re needed most.

Applying Aeroflow helps loose compacted soil and improves the structure of the soil itself. This allows oxygen, water, and nutrients to move more freely through the root zone. Think of it as preparing the foundation before you build.

This step can take just a few minutes with a hose-end sprayer, but it dramatically improves how well your lawn responds to everything else you apply during the season.

Step 2: Prevent Weeds Before They Start

Many of the most frustrating lawn weeds, especially crabgrass, begin germinating when soil temperatures reach about 55°F. 

Once those weeds appear, they’re much harder to control, which is why prevention is so important in spring.

Applying Weed Wipeout early in the season creates a natural barrier that prevents weed seeds from successfully establishing in your lawn. A thick, healthy lawn combined with early prevention is one of the most effective ways to reduce weeds all season long.

Step 3: Feed the Lawn as Growth Begins

As soil temperatures warm and grass begins actively growing, your lawn needs nutrients to support deeper roots and healthy blades.

Fertilizers such as Total Lawn provide a balanced blend of natural nutrients designed to support steady, sustainable growth without pushing the lawn too aggressively.

The goal isn’t to force fast growth. Instead, the focus is on building long-term health, which helps your grass handle summer heat and stress more effectively.

Step 4: Repair Winter Damage and Bare Spots

Many lawns come out of winter with a few thin or damaged areas. Salt from winter roads, pet spots, and snow mold can all leave dead patches behind.

North Star tall fescue helps restore those areas with new grass growth designed to be heat and drought tolerant. Addressing small problems early in the season helps your lawn fill in naturally as spring growth accelerates.

Why This System Works

A healthy lawn doesn’t come from one product, it comes from working with your lawn’s natural cycle. By focusing on soil health, weed prevention, balanced nutrition, and targeted repairs, you’re giving your lawn exactly what it needs at the right time.

Because Lawnbright products attach directly to your hose, most of these steps take just 15 minutes to apply.

Common Spring Lawn Mistakes

There are a number of mistakes we often see with spring lawn maintenance, no matter where you are. But, they’re easily avoided. Here are some of the most common ones.

Fertilizing too early.

Wait until grass is starting to grow before you fertilize. If you’re pushing grass to grow before its growth cycle, you’re actually feeding weeds, and you’re potentially stressing the turf.

Skipping soil health.

Ensuring your soil is not compacted is important to get nutrients into the plant. Dethatch and aerate to allow nutrients to flow and reduce wasted fertilizer.

Waiting too long for weed prevention.

Once crabgrass sprouts and soil temps rise much over 55°F, pre-emergent is less effective. (One important note: you can see some early spring weeds that are left over from fall plants - it can be helpful to lay down some pre-emergent in the fall to prevent these. Don’t despair if you see them: apply pre-emergent based on soil temperatures to help reduce the weeds all through the season.

Frequently Asked Questions

When should I start spring lawn care?

It’s temperature, not time. Start your spring lawn care routine when soil temperatures reach 50-55°F.

Is March too early to fertilize?

In most northern climates, yes! It depends on your grass growth cycle - start fertilizing when you start seeing growth.

Should I aerate in spring?

If your soil is compacted, early spring aeration can help nutrients reach the roots. 

Ask Wilson

Not sure when your lawn wakes up where you live? Ask Wilson and get a customized spring lawn plan based on your location.