Hydroseeding & erosion control FAQ
33 questions we actually get asked, covering hydroseeding, cost, timing, aftercare, soil and the rest of what we do. If yours isn’t here, call (919) 884-9772 — we’d rather answer it than have you guess.
Hydroseeding basics
How does hydroseeding actually work?
A tank mixes seed, wood or paper mulch, starter fertilizer, tackifier and water into a slurry, and an operator sprays it through a hose in an even coat. The mulch acts as a moisture reservoir sitting directly against the seed, and the tackifier binds the whole layer to the soil so it doesn’t move. Seed germinates in that damp mulch layer rather than on bare exposed ground, which is the entire advantage.
Why is the slurry green?
A non-toxic dye is mixed into the tank. It has nothing to do with growing grass — it lets the operator see exactly what has and hasn’t been covered, so you get an even coat rather than missed strips. The colour fades within a couple of weeks.
What is tackifier and why does it matter?
Tackifier is a natural or synthetic binder that glues the mulch and seed to the soil surface. On a slope or in a Piedmont thunderstorm it’s the difference between seed staying where you put it and seed ending up in the street.
What grass seed do you use?
Turf-type tall fescue for most Triangle lawns, often a blend of several cultivars for disease resistance. Shade-rated blends with a higher fine fescue fraction under mature canopy. Bermuda or Zoysia on full sun and sandy ground, mostly east of Smithfield. We pick after seeing the site, not before.
Can you hydroseed a slope?
Yes, and it’s one of the main reasons to choose it. A hose reaches anywhere, and with a heavier mulch load or a bonded fiber matrix the material holds on grades where sod would slide before it rooted.
Cost
How much does hydroseeding cost?
$0.08 to $0.30 per square foot across our service area. A typical quarter-acre yard lands between roughly $900 and $3,300, a half acre between $1,700 and $6,500, and a full acre between $3,500 and $13,000. Estimates are free and measured on site.
Why is there such a wide range in the price?
Prep. A lot that’s already graded, level and reachable by truck sits at the bottom of the range. One that needs the clay pan broken, topsoil brought in, rocks removed and hose run a long way sits at the top. The seed is the cheap part.
Is hydroseeding cheaper than sod?
Substantially — roughly a third the price on most residential lots. Sod runs $0.60 to $1.50 per square foot installed. The trade is time: sod is a lawn in two weeks, hydroseeding is a lawn in a season.
Do you charge for the estimate or for travel?
No. Estimates are free anywhere in the service area and travel is built into the quoted price rather than added as a line. At the far edges — Warren, Vance, Person — we do look for around an acre or more to make the trip work.
Do you offer per-lot pricing for builders?
Yes. We schedule against your closing calendar, spray in phases as lots come available, and invoice per lot rather than per visit. Send the plat and the target dates.
Timing
How long does hydroseed take to grow?
Tall fescue germinates in 7 to 14 days in Triangle conditions. You’ll see a thin green haze at about two weeks, mow for the first time around week four to six, and have a lawn that reads as filled in after one full growing season.
When is the best time of year to hydroseed in North Carolina?
Mid-September through late October is the strongest window in the Piedmont — warm soil, cooler air and reliable fall rain. March into early April is second best. Bermuda and Zoysia go down May through July.
Can you seed in summer?
For cool-season grass we’d rather not, and we’ll say so. July seeding on fescue needs near-perfect irrigation and often fails anyway. For erosion control we spray year round using a fast cover crop, then come back for permanent turf in the right window.
How soon can you start?
Most residential jobs are scheduled within one to two weeks of the estimate. Bare sites at genuine risk of washing get priority — tell us when you call if a storm is coming.
How long before I can walk on it?
Stay off entirely for the first three weeks, then light foot traffic only until after the second mow. Roots need to knit before the surface can take use.
After the spray
How often do I water new hydroseed?
Keep the mulch damp, never soaked. Two to three short cycles a day for the first two to three weeks, then once daily, then deep watering twice a week once the grass is a couple of inches tall. We leave a printed schedule after every job.
What if it rains right after you spray?
Normal rain is fine and helps. The tackifier sets within a few hours. A severe storm in the first day can move material on a steep grade, and if that happens we come back and touch up the affected area.
When do I mow for the first time?
Around week four to six, once the grass is about three to four inches tall. Take no more than a third of the blade, use a sharp mower, and avoid turning tightly on young turf.
Why are there thin patches?
Usually water. Sprinkler coverage is rarely as even as people think, and the dry corners show up first. Occasionally it’s a washout or a dog run. We check back after germination and touch up what needs it.
When should I fertilize?
The starter fertilizer in the slurry covers the first six weeks or so. After that, follow a normal fescue programme. In the Falls Lake and Jordan Lake watersheds there are limits on what can be applied and when — worth checking before you buy a bag.
What about weeds?
Some are normal in a new stand and many disappear once the grass thickens. Don’t apply broadleaf herbicide until after the third or fourth mow, and never use a pre-emergent in the first season — it stops your grass germinating too.
Soil and site conditions
Do I need to bring in topsoil, or can you seed straight onto clay?
Often straight onto clay. Undisturbed lots usually still have enough topsoil to work with once the surface is broken. Where the grading contractor scraped everything off and left bare subsoil, we do recommend bringing soil back in — seed will germinate on raw clay but the lawn stays thin and struggles in its second summer. We’ll tell you which you have.
Do I need a soil test?
On acreage and on ground coming out of long farming, yes — it’s usually worth the small cost. On a standard suburban lot we can often read the site well enough without one. NC State runs low-cost testing through the Cooperative Extension.
My yard holds water. Will seeding fix it?
No, and anyone who says otherwise is taking your money. Standing water rots seed. Drainage is a separate job — French drain, curtain drain, swale or regrading — and it has to happen first. We do that work too and will tell you at the estimate if that’s what you’re facing.
Do you remove the old lawn first?
Depends. Above roughly 25 percent existing coverage, renovation usually beats replacement: aerate, amend, overseed, keep the root mass you already have. Below that, starting clean is generally better value.
Our other services
Do I need a retaining wall or drainage?
They solve different problems and get confused often. Soil moving downhill is a grade problem and a wall is the answer. Water sitting or running across the yard is a drainage problem and a wall won’t fix it. Sometimes it’s both, sometimes neither.
Can you install silt fence for my permitted site?
Yes. We work from your approved erosion control plan, trench and compact the fabric rather than surface stapling it, and handle inlet and outlet protection. We maintain the run through construction and remove and dispose of it at close-out, along with the permanent seeding that usually goes in at the same stage.
Can you seed over a new septic drain field?
Yes, and it’s a common job in Chatham and the outer counties. A drain field can’t take heavy equipment or deep tillage. A hydroseeder sprays from the hose with nothing crossing the field, so cover establishes without risking the system.
Do you build retaining walls over a certain height?
We build segmental block, boulder and timber walls with proper base prep, drainage stone and geogrid where height requires it. Above the height where North Carolina requires engineered drawings, you’ll need a stamped design and we’ll build to it.
Working with us
Which counties do you serve?
Eleven, from our Raleigh base: Wake, Johnston, Alamance, Orange, Person, Durham, Chatham, Franklin, Granville, Warren and Vance. Wake, Durham, Orange, Chatham, Johnston, Franklin and Granville are routine weekly territory. Alamance, Person, Vance and Warren are further out and we batch those trips together.
Is there a minimum job size?
Close to Raleigh, no — we’ll quote a small city lot. Out at the edges of the service area the drive has to be worth making, so we look for about an acre or a slope or shoreline job of similar scale.
Are you licensed and insured?
Yes, in the state of North Carolina. We’re happy to provide a certificate of insurance for commercial and builder work before we mobilise.
Do you guarantee the results?
We guarantee the work and the materials, and we come back after germination to touch up thin spots from a washout or our own coverage. We can’t guarantee a lawn that wasn’t watered — that’s the one variable entirely in your hands, which is why we leave a schedule.
Still have a question?
Call (919) 884-9772 and ask. We’d rather spend five minutes on the phone than have you book the wrong job.