Calculate grass seed, fertilizer, watering, mowing height, and seasonal care needs for your Georgia lawn — customized for Bermuda, Centipede, Zoysia, St. Augustine, Tall Fescue, and Kentucky Bluegrass. Includes a 2026 regional care calendar, soil pH guidance, pre-emergent timing, cost estimates, and problem-solving notes for North Georgia, Metro Atlanta, Piedmont, Coastal Plain, and South Georgia lawns.
Month-by-month tasks timed to Georgia's climate zones and grass growth cycles.
Active Growth Transition Dormant
Mowing heights, watering, fertilizer timing, and ideal pH for every major Georgia grass type.
| Grass Type | Mow Height | Water/Week | Fertilizer | pH |
|---|---|---|---|---|
| Bermuda | 1–2" | 1" weekly | May, Jun, Jul, Aug (4×) | 5.5–6.5 |
| Centipede | 1.5–2" | 0.75–1" weekly | Late Apr + mid-Jul (2× only) | 5.0–6.0 |
| Zoysia | 1–2" | 0.75–1" weekly | May, Jul, Sep (3×) | 6.0–7.0 |
| St. Augustine | 2–3" | 1–1.25" weekly | Apr, Jun, Aug | 5.5–6.5 |
| Tall Fescue | 3–4" | 1–1.5" weekly | Oct, Nov, Mar | 5.5–6.5 |
| Kentucky Bluegrass | 3–4" | 1–1.5" weekly | Oct, Mar, Apr | 5.5–6.5 |
Georgia is not a one-grass state. A lawn in the North Georgia mountains behaves very differently from a lawn in Savannah, Macon, Albany, or Valdosta. This guide explains how to use the calculator results in real life so the seed, fertilizer, and water numbers are not just math — they become a practical plan.
The most common Georgia lawn mistake is choosing a grass because it looks good in a neighbor’s yard, then managing it with the wrong seasonal calendar. Warm-season grasses such as bermudagrass, zoysiagrass, centipedegrass, and St. Augustinegrass wake up when soil warms, grow hardest in summer, and slow down when nights cool. Cool-season grasses such as tall fescue and Kentucky bluegrass do the opposite: they build most of their strength in fall and spring, then struggle through hot, humid summers.
That difference controls almost everything on this page: when you fertilize, when you seed, when you aerate, when you apply pre-emergent, and when you should avoid pushing growth. A bermudagrass lawn in Middle Georgia can handle regular nitrogen through summer. A tall fescue lawn in Atlanta should not be pushed with heavy nitrogen in June or July because the grass is already under heat stress and disease pressure. A centipede lawn can decline if treated like bermuda because centipede needs very little nitrogen and prefers a more acidic soil.
The calculator starts with lawn size because every meaningful lawn-care input is area based. Seed is priced by pounds per 1,000 square feet, fertilizer by pounds of nitrogen per 1,000 square feet, and irrigation by inches of water over the lawn surface. Once you know the square footage, you can stop guessing and start buying the right amount. For irregular lawns, measure the yard in rectangles: front left, front right, side strip, backyard, and any island or slope sections. Add the sections together and subtract patios, driveways, beds, pools, and sheds.
Calendar windows are helpful, but Georgia springs can be early or late. Warm-season fertilizer should wait until the lawn has greened up and soil is warm. Pre-emergent should go down before summer annual weeds germinate, not after crabgrass is visible. Fall fescue seeding should happen while soil is warm enough for germination but air is cooling enough to reduce summer stress.
| Region | Best Fits | Watch-outs |
|---|---|---|
| North GA / Mountains | Tall Fescue, Zoysia, Bermuda in sun | Winter injury on aggressive warm-season sites; summer disease on fescue |
| Atlanta Metro | Tall Fescue shade, Bermuda/Zoysia sun | Clay compaction, heat stress, shade transitions |
| Piedmont / Macon | Bermuda, Zoysia, Centipede | Soil pH and compaction management |
| Augusta / East GA | Bermuda, Zoysia, Centipede | Hot summers; careful irrigation needed |
| Coastal / Savannah | St. Augustine, Bermuda, Centipede, Zoysia | Humidity, disease, sandy soils, salt influence |
| South GA | Bermuda, Centipede, St. Augustine | Long growing season, insects, and drought cycles |
| Input | Default Used | Adjust When |
|---|---|---|
| Water | About 1 inch weekly | Rainfall already supplies water, soil is sandy, or restrictions apply |
| Bermuda seed | 1–2 lb/1,000 sq ft | Use higher end for bare soil or poor seedbed |
| Centipede seed | Low rate, slow fill-in | Use sod/plugs when fast cover is needed |
| Tall fescue seed | 6–8 lb/1,000 sq ft | Use higher end for bare soil and fall renovation |
| Fertilizer | Based on grass type | Soil test recommends different N, P, K, or lime |
Fertilizer timing matters more than brand name. Georgia’s warm-season grasses should be fed during active growth, while tall fescue should receive most of its nitrogen in fall.
Bermuda is Georgia’s most aggressive full-sun turf. It can handle heavier summer feeding because it spreads through stolons and rhizomes, recovers quickly, and grows fastest from late spring through summer. A typical home program uses several light nitrogen applications from late spring through August. Do not start too early. Fertilizing before real green-up wastes product and may encourage weeds more than turf.
Centipede is the grass most likely to be damaged by “too much care.” It has low nitrogen needs, prefers acidic soil, and can decline when over-limed or over-fertilized. If a Georgia centipede lawn is pale, thin, or patchy, do not automatically add more fertilizer. First check pH, compaction, drought stress, thatch, and soil-test results. The calculator intentionally keeps centipede fertilizer expectations conservative.
Zoysia is dense, attractive, and slower to repair than bermuda. It usually needs less nitrogen than bermuda but more careful mowing and thatch management. Apply fertilizer after spring green-up and during summer active growth. Avoid late-season nitrogen that pushes tender growth before cool nights. Zoysia also benefits from sharp mower blades because dull blades leave a tan cast across the lawn.
St. Augustine is best suited to South and coastal Georgia where winter temperatures are milder. It tolerates more shade than bermuda, but it is not a seed-and-fill grass for most homeowners. Sod or plugs are the normal establishment method. Manage it with moderate nitrogen, correct mowing height, and pest monitoring because chinch bugs and disease can cause fast decline when the lawn is stressed.
Tall fescue is the cool-season option for North Georgia, shaded Atlanta lawns, and transition-zone yards where homeowners want green color in winter. Its most important fertilizer period is fall. October and November feeding help roots, density, and spring color. Summer nitrogen is risky because heat, humidity, and brown patch pressure are high. Annual or regular fall overseeding is normal because tall fescue is a bunch-type grass and does not aggressively spread into thin spots.
| Grass | Main Feeding Window | Important Note |
|---|---|---|
| Bermuda | May–August | Best response in full sun and active growth |
| Centipede | Late spring + midsummer only | Keep nitrogen low; watch pH |
| Zoysia | May–August | Moderate feeding; avoid late push |
| St. Augustine | Late spring–summer | Best in coastal/south GA; monitor pests |
| Tall Fescue | October–November + light spring | Fall is the key feeding season |
A bermuda fertilizer calendar can damage centipede. A fescue calendar can stress bermuda. A St. Augustine mowing height is too tall for manicured bermuda. Always match the calendar to the actual grass species in the yard.
Watering is where many Georgia lawns lose money. Too little water causes summer dormancy and thinning; too much water encourages shallow roots, disease, and runoff.
Established Georgia lawns generally perform best with deep, infrequent irrigation. The practical target is about 1 inch of water per week during the growing season, including rainfall. That can be delivered as two half-inch watering sessions instead of daily shallow watering. A rain gauge or tuna-can test is more reliable than guessing from sprinkler runtime because every irrigation system applies water at a different rate.
Georgia’s statewide non-drought outdoor water schedule allows landscape watering only outside the heat of the day for most permitted water-system users. This means the best practical irrigation window is early morning. Morning watering also reduces disease risk because grass blades dry after sunrise. Evening watering can keep foliage wet through the night, which is not ideal for tall fescue, St. Augustine, or any lawn under fungal disease pressure.
New seed and sod are exceptions. Newly planted turf needs more frequent light watering until roots establish, and Georgia rules allow additional watering for new plantings for a limited establishment window. Once the lawn is rooted, transition back to deep, infrequent irrigation. Keeping mature turf on a daily watering habit is one of the fastest ways to build a shallow-rooted lawn.
One inch of water over 1,000 square feet equals about 623 gallons. For a 5,000 square foot lawn, that is roughly 3,115 gallons per week if rainfall supplies none of it. If your county receives half an inch of rain, the irrigation requirement drops by about half. That is why the calculator’s water result should be treated as a target, not an automatic command to run sprinklers every week.
| Lawn Size | 0.5 inch | 1 inch |
|---|---|---|
| 2,500 sq ft | 779 gal | 1,558 gal |
| 5,000 sq ft | 1,558 gal | 3,115 gal |
| 7,500 sq ft | 2,336 gal | 4,673 gal |
| 10,000 sq ft | 3,115 gal | 6,230 gal |
| 1 acre | 13,577 gal | 27,154 gal |
Many Georgia yards have compacted red clay. If water runs off before half an inch soaks in, use cycle-and-soak irrigation: run a short cycle, pause 30–60 minutes, then run another short cycle. This gives the same total water with less runoff.
The calculator provides seed pounds when seed is realistic, but some Georgia lawn choices are usually established by sod, plugs, or sprigs instead of seed.
Bermudagrass can be seeded, sodded, sprigged, or plugged. Seed is cheaper but slower and more variable. Sod gives instant cover and is useful for slopes, erosion areas, and front-yard curb appeal. Hybrid bermudagrass types used on premium lawns are usually vegetative, meaning sod or sprigs rather than seed. Common bermuda seed can work well on sunny sites when planted in late spring or early summer after soil warms.
Centipede can be seeded, but it is slow. It may take a full growing season or more to reach full density, especially if soil pH, moisture, or fertility are not ideal. Many homeowners use centipede sod for quicker coverage. Zoysia seed exists for some varieties, but sod or plugs are still common because the grass establishes slowly from seed and weeds can invade before coverage is complete.
St. Augustine is normally not established from seed in Georgia. Use sod or plugs. Tall fescue, on the other hand, is usually seeded in fall. If a tall fescue lawn thins after summer, that does not mean the species has failed; it often means the lawn needs the normal fall overseeding cycle used in Georgia’s transition climate.
| Grass | Best Method | Why |
|---|---|---|
| Bermuda | Seed, sod, sprigs | Fast spread in full sun |
| Centipede | Seed or sod | Low maintenance but slow to fill |
| Zoysia | Sod or plugs | Dense but slow establishment |
| St. Augustine | Sod or plugs | Seed not practical for homeowners |
| Tall Fescue | Seed | Best renovated in fall |
| Project | DIY Materials | Pro Context |
|---|---|---|
| Seed renovation | Seed + starter fertilizer + straw | Often priced with aeration or soil prep |
| Sod repair | Sod pallets, delivery, soil prep | Labor rises on slopes or removal jobs |
| Fertilizer program | 2–5 applications depending grass | Usually bundled with weed control |
| Weed program | Pre + post-emergent products | Requires correct timing and calibration |
| Aeration | Rental + seed if needed | Higher value on clay and compacted soil |
Many lawn problems start with wrong timing or wrong quantities. Use the calculator numbers with these diagnosis notes before buying more products.
Use these examples as a quick check against your own results.
The calculator gives a strong planning number, but a good lawn plan still needs field checks before product goes in the spreader.
Before buying seed or fertilizer, walk the lawn and separate actual turf from non-lawn space. A 10,000 square foot lot rarely has 10,000 square feet of grass because the house, driveway, beds, patios, and shaded natural areas reduce the treated area. Measuring only the treated turf keeps fertilizer rates legal, avoids seed waste, and makes professional quotes easier to compare.
Second, match the result to the season. If the calculator says a bermuda lawn needs fertilizer but it is February and the grass is still tan, save the product until green-up. If the calculator says a tall fescue lawn needs seed but it is May, wait for the fall window unless the repair area is small and irrigated. Correct timing often saves more money than buying a cheaper product.
Third, calibrate the spreader or sprayer. Two homeowners can use the same bag and get different results if one walks faster, overlaps more, or uses a worn spreader setting. Make one practice pass on a driveway or tarp with dry product to confirm pattern width, then apply half-rate in two directions for better coverage.
| Step | Why it matters |
|---|---|
| Confirm grass type | Prevents wrong fertilizer, seed, and mowing height |
| Measure turf area | Prevents overbuying and over-application |
| Check soil test | Guides pH, phosphorus, potassium, and lime |
| Check weather | Avoids wash-off, burn, and weak germination |
| Follow label | Products differ by formulation and legal rate |
Most searched Georgia lawn questions — sourced from UGA Cooperative Extension, LawnLove Georgia Calendar, Weed Pro Georgia, Georgia Turf Solutions, Carolina Fresh Farms, AgroPro Lawn Care and 20+ professional sources.
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