The short answer: Start by identifying what grass you have (Bermuda, fescue, or Zoysia), then build your routine around that grass type’s specific needs. The four pillars of any lawn care routine are mowing (weekly at the correct height), watering (deep and infrequent, morning only), fertilization (timed to your grass type’s growth cycle), and weed control (prevention beats treatment). Oklahoma’s clay soil and extreme weather swings make timing especially important here. You don’t need to do everything at once—start with the basics, get those right, and add complexity as you go. Complete Lawn Care has been helping Tulsa-area homeowners build effective lawn care routines for over 25 years, whether they want to DIY or have us handle it.
Step 1: Figure Out What Grass You Have
This is the most important first step, and skipping it is where most beginners go wrong. Bermuda and fescue have opposite needs—what helps one can hurt the other. If you don’t know what you’re working with, you’ll waste time and money doing the wrong things at the wrong times.
Bermuda grass (most common in Tulsa):
Fine to medium blade texture. Gray-green to dark green color. Spreads aggressively via runners (you’ll see it creeping into flower beds). Goes completely brown/tan in winter (November through April). Thrives in full sun and heat. If your lawn is brown right now (winter) and was green in summer, you probably have Bermuda.
Fescue grass:
Wider, coarser blades than Bermuda. Medium to dark green. Grows in clumps (doesn’t spread via runners). Stays green in winter. Struggles and thins out during hot summers. Common in shaded areas where Bermuda won’t survive. If your lawn is green right now (winter), you likely have fescue.
Zoysia grass:
Dense, carpet-like texture. Feels thick underfoot. Spreads slowly via runners. Goes brown in winter (longer dormancy than Bermuda). Handles some shade better than Bermuda. Less common than Bermuda but gaining popularity.
Many Tulsa lawns have a mix—Bermuda in sunny areas and fescue in shaded spots. That’s fine, but you’ll need to care for each area according to its grass type.
Step 2: Understand the Four Pillars of Lawn Care
Every lawn care routine comes down to four things: mowing, watering, fertilization, and weed control. Get these four right, and you’ll have a healthy lawn. Neglect any one of them, and the others won’t matter much.
Pillar 1: Mowing
Mowing is the most frequent lawn care task, and it’s the one most people get wrong. The two critical factors are height and frequency.
Mowing height by grass type:
Grass Type
Recommended Height
Why It Matters
Bermuda
1.5 to 2.5 inches
Bermuda tolerates shorter cuts; too tall gets leggy.
Fescue
3.5 to 4 inches
Taller grass shades roots, reducing heat stress.
Zoysia
1 to 2 inches
Dense growth looks best at lower heights.
The biggest mowing mistake: Cutting fescue at Bermuda height. If you mow fescue at 2 inches, you’re scalping it and causing serious stress. This is extremely common when homeowners don’t know what grass they have.
Mowing frequency: Mow often enough that you never remove more than 1/3 of the blade height at once. During peak growing season (summer for Bermuda, fall for fescue), this usually means weekly mowing. Letting grass get too tall and then cutting it short shocks the plant.
Other mowing tips: Keep blades sharp (dull blades tear grass and invite disease). Vary your mowing pattern to prevent ruts and soil compaction. Leave clippings on the lawn—they decompose and return nutrients to the soil.
Pillar 2: Watering
Watering mistakes cause more lawn problems in Oklahoma than almost anything else. The key principles are simple: water deeply, water infrequently, and water in the morning.
How much water:
Bermuda: 1 to 1.25 inches per week during summer (including rainfall). Fescue: 1.5 to 2 inches per week during summer. Zoysia: About 1 inch per week. These amounts decrease in spring/fall and stop entirely for dormant warm-season grasses in winter.
How often:
Water 2-3 times per week maximum, applying enough each time to soak the soil 4-6 inches deep. Do NOT water daily with light sprinklings—this keeps the surface wet (promoting disease) while roots stay shallow (making grass drought-vulnerable). The screwdriver test: after watering, you should be able to push a screwdriver into the soil easily to a depth of 4-6 inches. If you can’t, you haven’t watered deeply enough.
When to water:
Morning only (before 10 AM). This allows grass to dry during the day. Evening watering leaves grass wet all night, which promotes fungal disease—especially brown patch in fescue. If your irrigation system runs at night, change the schedule immediately.
Pillar 3: Fertilization
Fertilization provides the nutrients grass needs to grow thick and healthy. Timing is everything—fertilize when your grass is actively growing, not when it’s dormant or stressed.
Bermuda fertilization schedule:
Fertilize from late spring through summer (May through August) when Bermuda is actively growing. Apply 3-4 times during this period. Do not fertilize dormant Bermuda in winter—it can’t use the nutrients, and you’re just feeding weeds.
Fescue fertilization schedule:
Fertilize in fall (September through November) and early spring (March-April). Fall is the most important time—this is when fescue grows best. Do NOT fertilize fescue in summer. It’s already heat-stressed, and nitrogen fertilizer promotes disease and pushes growth the grass can’t sustain.
Soil testing:
Before you start a fertilization program, consider getting your soil tested. Oklahoma’s clay soil often has pH issues or nutrient imbalances that affect how well grass can absorb fertilizer. Complete Lawn Care offers soil testing to identify what your lawn actually needs—sometimes the problem isn’t a lack of fertilizer but a soil issue preventing nutrient uptake.
Pillar 4: Weed Control
Weed control has two components: preventing weeds before they appear (pre-emergent) and killing weeds after they appear (post-emergent). Prevention is far more effective than treatment.
Pre-emergent herbicides:
These create a barrier in the soil that prevents weed seeds from germinating. Timing is critical—apply too late and weeds have already sprouted. In Oklahoma, spring pre-emergent (for crabgrass and summer annuals) should go down in late February to early March when soil temperatures reach 55°F. Fall pre-emergent (for winter weeds like henbit and chickweed) should be applied in September. Pre-emergent is the single most effective thing you can do to prevent weeds.
Post-emergent herbicides:
These kill weeds that are already growing. Different products target different weeds—broadleaf herbicides kill dandelions and clover but not grass, while specialty products are needed for grassy weeds like crabgrass or nutsedge. Always read labels carefully and make sure the product is safe for your grass type.
The best weed control: a thick, healthy lawn. Dense grass crowds out weeds naturally. If you’re constantly battling weeds, focus on building healthier turf—the weeds are a symptom, not the root problem.
Step 3: Build Your Lawn Care Calendar
Now that you understand the basics, here’s what a year of lawn care looks like in Oklahoma. This assumes a Bermuda lawn—adjust if you have fescue (remember, fescue’s active seasons are opposite).
Late February / Early March
Apply spring pre-emergent when soil temperatures reach 55°F. This prevents crabgrass and other summer annual weeds. Don’t wait until you see weeds—by then it’s too late for pre-emergent to work.
April
Watch for Bermuda green-up. As temperatures warm, your lawn will start showing green. Shady areas green up last. Begin mowing once grass is actively growing. Apply broadleaf weed control for any winter weeds that slipped through.
May
First fertilizer application for Bermuda once it’s fully green. Begin regular watering schedule. Mowing frequency increases as growth accelerates. Second pre-emergent application (optional but recommended for crabgrass-prone lawns).
June / July / August
Peak growing season for Bermuda. Mow weekly (sometimes twice weekly). Continue fertilization every 6-8 weeks. Maintain consistent watering—deep and infrequent. Spot-treat any breakthrough weeds. This is also the best time for Bermuda aeration (June-July).
September
Apply fall pre-emergent for winter weed prevention. Bermuda growth is slowing. Fescue owners: this is your prime month—fertilize, aerate, and overseed fescue now.
October
Final Bermuda fertilizer application while grass is still somewhat active. Mowing frequency is decreasing. Watch for Bermuda starting to go dormant late in the month.
November / December / January
Bermuda is dormant. No mowing, no watering, no fertilizing. Treat any winter weeds that emerge. This is a good time to service your mower, plan next year’s approach, and give your lawn (and yourself) a break.
Step 4: Start Simple, Build From There
If all of this feels overwhelming, here’s the good news: you don’t have to do everything perfectly from day one. Start with the basics and add complexity as you get comfortable.
If you do nothing else, do these three things:
1. Mow at the correct height for your grass type. This single change makes a bigger difference than most people realize. Bermuda at 2 inches, fescue at 3.5-4 inches.
2. Water deeply and infrequently, morning only. 2-3 times per week maximum, enough to soak the soil 4-6 inches deep. No evening watering.
3. Apply pre-emergent twice a year. Late February/early March and September. This prevents most weed problems before they start.
Get these three things right, and you’ll be ahead of most homeowners. You can add fertilization, aeration, overseeding, and other practices as you learn more about your lawn’s specific needs.
Common Beginner Mistakes to Avoid
Mowing fescue too short. This is probably the most common mistake in Oklahoma. Fescue needs to be tall (3.5-4 inches) to survive our summers. Cutting it at 2 inches causes severe stress.
Watering every day with light sprinklings. This promotes shallow roots and fungal disease. Water deeply but less often.
Fertilizing at the wrong time. Fertilizing fescue in summer or Bermuda in winter does no good and can cause harm.
Applying pre-emergent too late. Once you see crabgrass, pre-emergent won’t help. Timing is based on soil temperature, not calendar date.
Overseeding Bermuda in fall. Bermuda needs warm soil to germinate. Fall-seeded Bermuda won’t survive winter. (Fescue is the opposite—fall is the only time to overseed fescue.)
Expecting instant results. A neglected lawn won’t transform in a month. Real improvement takes a full growing season—sometimes longer. Be patient.
Treating symptoms instead of causes. Weeds, disease, and thin grass are usually symptoms of underlying problems—compaction, poor soil, and incorrect watering. Address the root cause, not just the visible issue.
DIY vs. Hiring a Professional: When Each Makes Sense
You can absolutely maintain a healthy lawn yourself if you’re willing to learn and stay consistent. But there are situations where professional help makes sense.
DIY makes sense if:
You enjoy yard work and have time for it. You’re willing to learn about your specific grass type and local conditions. You have a relatively small lawn. You want to save money and don’t mind the learning curve. You’re patient and okay with making some mistakes along the way.
Professional help makes sense if:
You’re busy, and lawn care isn’t how you want to spend your weekends. You’ve tried DIY and aren’t getting the results you want. You have persistent problems (weeds, disease, thin areas) that won’t resolve. You want someone else to handle timing, product selection, and application. You’d rather pay for expertise than learn everything yourself.
Complete Lawn Care’s 7-step program handles fertilization, weed control, and monitoring throughout the year—timed specifically for Oklahoma conditions and your grass type. We also offer soil testing to identify underlying issues, and our technicians spot problems early when they’re easiest to fix. That said, we’re happy to answer questions and help DIY homeowners succeed too—an educated customer is always better than a frustrated one.
The Bottom Line
Know your grass. Bermuda and fescue have opposite needs. Everything else depends on getting this right.
Master the four pillars. Mowing (correct height), watering (deep and infrequent, morning only), fertilization (timed to growth cycle), and weed control (prevention beats treatment).
Start simple. Correct mowing height, proper watering, and twice-yearly pre-emergent will get you most of the way there.
Be patient. Lawn improvement takes time. A full growing season is realistic for noticeable results.
Need Help Getting Started?
Whether you want to DIY or have us handle it, Complete Lawn Care is here to help Tulsa-area homeowners build healthy lawns. Our 7-step program takes the guesswork out of fertilization and weed control, with applications timed specifically for Oklahoma conditions. We also offer soil testing to identify what your lawn actually needs.
Not sure what you need? Give us a call. We’re happy to take a look at your lawn, help you identify your grass type, and give you honest advice—whether that means hiring us or pointing you in the right direction to do it yourself.
We’ve been helping Tulsa-area homeowners with their lawns for over 25 years. We know Oklahoma conditions, and we know what works here.
Phone: (918) 605-4646
Email: [email protected]
Online: completelawncaretulsa.com/get-a-quote
Proudly serving Tulsa, Broken Arrow, Owasso, Jenks, Bixby, Sand Springs, and surrounding Oklahoma communities since 2000.