Broadcast seeding works for native seed, but it costs you more seed and gives you a less predictable stand. Published guidance has you add 25 percent over drilled rates in Illinois, around 50 percent for CRP plantings per Pheasants Forever, and up to double in Utah range seedings. On a 10-acre Iowa pollinator mix at current prices, that is roughly $470 to $950 in extra seed. Timing matters more than either method alone. A nine-site study from Iowa to Minnesota found that broadcasting during the growing season was never the best option anywhere. A dormant-season broadcast favored wildflowers. Spring drilling favored warm-season grasses. Broadcast in the dormant season, for forb-heavy mixes, or on ground no drill can reach. Drill everything else.
Key Takeaways
- Guidance for broadcast seeding native mixes calls for 25 percent more seed in Illinois and about 50 percent more for CRP work. Arid Western seedings can call for double.
- On a 10-acre pollinator mix priced at $189 an acre, that is about $470 to $950 more seed.
- Season matters more than method. Spring broadcasting was never the best choice in a nine-site Iowa and Minnesota study.
- Drilling tends to favor warm-season grasses. A dormant broadcast tends to favor forbs.
- If you broadcast, firm the seedbed, use a carrier, split seed by size, and roll afterward.
What is the real difference between drilling and broadcasting?
Where the seed ends up, and how sure you can be about it.
A broadcast puts seed on top of the ground. From there it is up to a cultipacker, a roller, rain, or a winter of freezing and thawing to press it into soil, and in the meantime you are hoping. A drill does the whole thing in one pass. Open the ground, meter seed in, cover it. The seed starts in contact with soil, not on top of it, not waiting for something else to press it down.
Minnesota’s Board of Water and Soil Resources sums up the trade in its upland seeding guidance. Drilling gives predictable results with proper calibration, and gets high germination with less seed. Broadcasting is less predictable. It also avoids the row effect a drill leaves, works with rough wild-harvested seed that would plug a drill, and can go on in winter when a drill cannot.
Neither one is wrong. The seed you are buying decides which failure costs you more.
How much more seed does broadcast seeding take?
More. How much more depends on who is writing the plan and where you are.
| Source | Broadcast rate vs. drilled rate |
|---|---|
| Illinois DNR native prairie planting guidance, built on the NRCS conservation cover practice | Plus 25 percent |
| Pheasants Forever broadcast seeding guidance for CRP plantings | Around plus 50 percent |
| Utah State University EcoRestore, Western reclamation and range seeding | Typically double |
The Illinois guidance is the plainest: if seed is broadcast, increase seeding rates 25 percent over no-till drill rates. Pheasants Forever goes further and explains why. Most standard mixes were built around a spring drilled seeding, so a broadcast generally gets bumped about 50 percent. They also tell you to check with your NRCS office before ordering, because FSA can ask questions if you buy fifteen acres of seed for a ten-acre contract. Utah State works in drier ground than ours and puts it at typically double to get equal establishment.
The reason is the same everywhere. Seed that never makes it into soil does not grow. It dries out on residue. It washes off with the first hard rain. A bird picks it up before it ever germinates. The extra seed is insurance against those losses. You are buying seed you expect to lose.
One more thing before you do the math. Work in pure live seed pounds, not bulk pounds, or the percentage is sitting on top of an error. The guide to choosing a seed drill for small acreage walks through the PLS conversion.
What does the extra seed cost on a real mix?
Here are three Iowa mixes from the Pheasants Forever habitat store, at the per-acre prices listed on October 1, 2026, run out over 10 acres.
| Mix (Iowa) | Listed per acre | 10 acres as listed | Plus 25 percent | Plus 50 percent |
|---|---|---|---|---|
| CP25 Standard Mesic Prairie 30/10 | $156 | $1,560 | $1,950 | $2,340 |
| CP42 Mesic Prairie Pollinator 10/30 | $189 | $1,890 | $2,363 | $2,835 |
| CP42 Leopold #2 Monarch Pollinator 10/40 | $384 | $3,840 | $4,800 | $5,760 |
So the extra seed on 10 acres runs from about $390 on a basic prairie mix to almost $1,920 on a diverse monarch mix. The table assumes the listed per-acre price matches a standard drilled rate, which is what Pheasants Forever says those mixes are generally built around. Your mix, your region, and your planner’s numbers will differ. Run your own.
That is real money. On a few acres planted once it is not a reason to buy a drill. The extra seed is cheaper than nearly any machine, including ours. It starts to matter when you plant every year, or when you are putting a $384 mix on ground where every seed counts.
Does drilled seed actually come up better?
Not automatically. This is the part I think the equipment side of the argument usually leaves out.
The best field test of the question we know of is a study across nine former crop fields from Iowa to Minnesota, published in Biological Conservation in 2011. Larson and colleagues compared a dormant-season broadcast, a growing-season broadcast, and a growing-season drilling. The answer changed by region. In Minnesota, the dormant broadcast established the most planted species. In Iowa, the growing-season drilling gave more planted cover. The dormant broadcast strongly favored perennial forbs. Drilling favored warm-season grasses. And the growing-season broadcast was never the best choice anywhere.
Their conclusion fits in two sentences. If you are planting during the growing season, drill. If you are going to broadcast, do it in the dormant season.
A second study points the same way. Yurkonis and colleagues, in Restoration Ecology in 2010, found diversity and weed abundance were similar between drilled and broadcast plots, but warm-season grasses came in thicker where seed was drilled. The Minnesota guidance says it in one line: drilling favors grass over forb germination.
That has a practical edge. A heavy grass stand can crowd out the wildflowers you paid the most for. If your mix is mostly forbs, a drill is not automatically the better tool, and I would not sell you one as if it were.
When is broadcasting the right call?
- Dormant and frost seedings. A late-fall or winter broadcast lets freezing and thawing work the seed in and gives forb seed the cold, wet stratification many species need. The dormant seeding guide covers the timing.
- Forb-heavy mixes. Pollinator plantings where wildflowers are the point. Many of those seeds want to sit on the surface or barely covered, and Iowa NRCS planting guidance puts forbs at no deeper than an eighth of an inch.
- Rough, wild-harvested seed. Seed with stems and chaff in it will plug a drill. A spreader does not care.
- Ground no machine can reach. Hand-broadcasting a quarter acre on a steep bank beats not planting it.
- When the equipment is what you have. Pheasants Forever says plainly that it is often easier to get broadcast equipment than a native seed drill. A spreader you own beats a drill you cannot get in the window.
When is broadcasting the wrong call?
- Spring and early summer. No freeze and thaw to work seed in, warm surface soil that dries out fast, and the one combination the Iowa and Minnesota study never found optimal.
- Heavy residue. Seed that lands on a mat of cornstalks never touches dirt. Iowa NRCS does not recommend a spring broadcast into corn residue for exactly that reason.
- Grass-heavy mixes. Fluffy warm-season grass seed is light, bridges in a spreader, and drifts. If big bluestem and Indiangrass are the backbone of your planting, a drill places them more reliably.
- Ground that floods or carries water. The Minnesota guidance says broadcasting is not recommended where flooding or flowing water is likely. The seed leaves with the water.
- Expensive seed on a short budget. If you can only afford the mix once, paying for 50 percent more seed to cover losses hurts more than the alternative.
If you broadcast, how do you give it the best chance?
Most broadcast failures come from skipping steps, not from the method. Pheasants Forever’s CRP guidance puts it bluntly: broadcasting is not just throwing seed on the ground and hoping.
- Get the seedbed firm and clean. They want it free of growing weeds and dead litter, with a boot print under half an inch, looking like a harvested no-till bean field. The boot print test takes ten seconds.
- Mix in a carrier. Native seed is too light and too varied in size to spread evenly on its own. Rice hulls, cracked corn, pelletized lime, or oats bulk up large seed. Damp sawdust, sand, or cat litter suit small seed.
- Split it by size. On small projects, Pheasants Forever recommends spreading large fluffy seed and small seed in separate passes. Even distribution is easier when the seeds weigh about the same.
- Calibrate the spreader. Seed a measured patch and see whether you run out on time. Note the spread width from the seed, not the carrier, since the carrier flies farther.
- Go over it twice. Half the seed north and south, half east and west. Your misses stop lining up.
- Roll it. In spring, cultipack or roll after seeding. Iowa NRCS notes rolling also cuts seed predation. Do not drag a harrow over it afterward. Illinois guidance says so directly, and a harrow pushes small seed deeper than it wants to be. Some seed left showing on the surface is fine.
Where the Dew Drop Drill fits
It sits between the two, and it is worth being precise about how.
The Dew Drop Drill meters seed off a ground wheel, so your rate holds when your speed changes. That is the drill part. It does not plant in rows. Seed goes down in a random pattern across the full three-foot band, which is the no-row look the Minnesota guidance lists as a broadcast advantage. Whether that pattern makes a measurably better prairie is not something we have tested, so take it as how the machine plants, not a promise about your stand.
The seed boxes were built around this exact problem. The large box runs five picker wheels and five agitators so fluffy grass seed keeps feeding instead of bridging. The small box meters forb and other small seed through five fluted cups, by itself or with the large box. That lets you run grass and forb seed separately in one pass, which is the same split Pheasants Forever recommends for a broadcast.
The honest limits. It is not a disc-opener drill cutting individual seed slots on fixed rows, so the rate tables written for those drills may not be the right ones. Ask your district or NRCS planner which rate they want you to use with it. And on ground frozen too hard for the discs to open, no drill works. That is broadcast season.
It is three feet wide, pulls behind a 450cc or larger ATV or UTV on hilly ground, and sells direct from the shop in Spencer, Iowa, for $9,395 plus shipping. If you have forty open acres, rent the district’s big drill. This one is for the steep strip, the wet corner, and the plot behind the gate. You still need to calibrate it for each seed lot.
FAQ
Can I just broadcast native grass seed?
Yes, and plenty of good prairies started that way. Do it in the dormant season if you can, on a firm, clean seedbed, with a carrier, and plan on buying 25 to 50 percent more seed than a drilled rate. A spring broadcast of a grass-heavy mix is the weakest version of it.
What is the best way to cover seed after broadcasting?
Roll or cultipack it. That presses seed into contact with soil without burying it. Skip the harrow or drag, which pushes small seed too deep. For a dormant seeding, freezing and thawing do most of the work, and rolling matters less.
How much more seed do I need if I broadcast?
Illinois guidance says 25 percent more than no-till drill rates. Pheasants Forever generally bumps CRP broadcast seedings about 50 percent. Check with your NRCS office before ordering, especially on a contract, since your planner sets the number that counts.
Is broadcasting or drilling better for wildflowers?
For forb-heavy mixes, a dormant-season broadcast holds up well. In the Iowa and Minnesota study, it strongly favored perennial forbs, while drilling favored warm-season grasses. Forb seed also wants to be at or just under the surface, which a careful broadcast and a roller deliver.
Can you broadcast native seed in the spring?
You can, but it is the least reliable timing. Without freezing and thawing, seed depends on rolling and rain to reach soil, and warm surface soil dries quickly. If spring is your only window, drill if you can get one. If you cannot, firm the seedbed hard and roll after seeding.
Planning a seeding this winter?
Start with the mix. If it is mostly forbs and you can wait for November, a careful broadcast may be all you need. If it is grass-heavy, the seed is expensive, or the ground is awkward to reach, send us a note with your acreage, your mix, and what you would pull a drill with. We will tell you straight which way we would go.