Deer food plot fertilizer: rates, timing, and soil tests

Last updated 2026-07-24

What is a food plot, and why does fertilizer matter so much?

A food plot is a planted opening, usually a half acre to a few acres, seeded with forage that deer will eat and that also draws them into range of a stand or blind. It's not the same as scattering corn on the ground. Most states regulate bait and supplemental feed differently than a planted food plot, so check your state wildlife agency's regulations before you assume a plot is legal where feeding isn't. Pennsylvania, for example, bans feeding deer statewide but treats agricultural food plots as a different category under its wildlife code ^[1]. Fertilizer is the difference between a plot that produces 2,000 pounds of forage per acre and one that produces 6,000 or more. Clover and brassica plots respond strongly to phosphorus and potassium, and nitrogen drives tonnage in grasses and brassicas but does little for legumes that fix their own nitrogen ^[2]. Skip the soil test and guess, and you'll either waste money on nutrients the soil already has, or starve a planting of the one nutrient it actually needs. That second mistake is the more common one we see hunters make. For a rundown on which species pair well with which soil types, see food plot whitetail and deer food plot seed.

How do I know how much fertilizer my food plot actually needs?

Pull a soil test. That's the honest answer, and every land-grant extension office says the same thing. A basic test runs $8 to $20 depending on the state lab, and it tells you pH, phosphorus, potassium, and often organic matter ^[3]. Without it you're applying a fertilizer rate designed for a national average soil, which may or may not resemble your dirt at all. University of Missouri Extension's soil testing program is a good example of the standard process most land-grant labs follow: collect, mix, ship, wait a week or two, get a number-based recommendation back instead of a guess ^[3]. Most land-grant labs recommend collecting 10 to 15 soil cores per plot, mixing them in a clean bucket, and pulling a single composite sample from the mix, at a depth of about 6 inches for most plot species ^[4]. Do this in late summer or early fall if you're planting a fall plot, so lime has time to react before the ground freezes. Your soil test report is the real authority here, not a blog post or a bag label. Labs calibrate recommendations to your regional soil type and the crop you tell them you're planting. If your report says add 300 pounds of 0-20-20 per acre and this article says something different, follow your report. A lot of hunters skip this step because it feels like one more chore before planting season. It's the single highest-return chore on the whole list. A $99 planning tool like a Custom Food Plot Plan can help translate your soil test numbers and acreage into a straightforward seed and fertilizer plan, but the soil test itself has to come first.

When should I apply lime, and why does pH matter this much?

Apply lime as early as possible, ideally 3 to 6 months before planting, because lime reacts slowly and takes months to fully adjust soil pH. Clemson Cooperative Extension notes that agricultural lime can take 6 months or longer to fully neutralize soil acidity, depending on particle size and how well it's incorporated ^[5]. Most food plot soils in the Southeast and Midwest run acidic, often in the 5.0 to 5.5 range, and clover, alfalfa, and chicory all want something closer to 6.5 to 7.0 to make full use of applied phosphorus and potassium ^{[2] [4]}. If your pH sits at 5.2 and you dump on a bag of 19-19-19 without liming, a good chunk of that phosphorus locks up in the soil and never reaches the plant. Lime rate depends entirely on your buffer pH reading, which is why the soil test matters more than a flat rule. As a rough range, many food plot soils need anywhere from 1 to 3 tons of ag lime per acre to get from the 5.0s into the 6.5 to 7.0 window, but some soils need far less and some need more. Pelletized lime costs more per ton but is easier to spread with a hand or ATV spreader and reacts a bit faster than raw ag lime.

What N-P-K ratio should I use for clover, brassicas, oats, or sorghum?

Clover (established)	Low, legume fixes its own N	Medium to high	Annual maintenance application of P and K, no N needed once established [2]
Brassicas (turnips, radish)	High	Medium to high	Heavy nitrogen feeders, respond strongly to 100+ lbs N/acre in many trials
Oats/cereal grains	Medium to high	Medium	Nitrogen boosts tonnage and regrowth after grazing [2]
Grain sorghum	Medium to high	Medium	Warm-season grass, wants N similar to corn but with lower total need	Clover is the outlier. Once it's established, inoculated legumes fix atmospheric nitrogen through root nodules, so adding nitrogen fertilizer to a mature clover stand is mostly wasted money and can even encourage grass and weed competition . New clover seedings sometimes get a small starter dose of nitrogen just to get seedlings going before the nodules kick in, but that's it. Brassicas are the opposite story. Turnips, radishes, and rape are nitrogen hogs, and extension trials generally show bulb size and tonnage scale up meaningfully with nitrogen rates up to a point, often in the 80 to 120 pound per acre range depending on soil and rainfall. If you're planting turnips and want big bulbs instead of small stringy ones, don't skimp on nitrogen. For species-specific seed selection to pair with these fertility needs, check deer food plot seed and food plot seed.

Different species want different ratios. Here's the general pattern extension agronomists describe, though your soil test should set the final number. | Plot type | Nitrogen need | Phosphorus/Potassium need | Notes |

When should I plant food plots for deer?

Timing depends on your zone and whether you're planting a spring/summer plot or a fall plot, and both depend on your average first and last frost dates. There's no single national planting date; it's regional. As a rule of thumb used by most state extension planting guides, spring plots (soybeans, cowpeas, warm-season annuals) go in after your last frost date, generally April in the Deep South up through late May or early June in the northern Midwest and Upper Midwest. Fall plots (clover, brassicas, cereal grains) go in 6 to 10 weeks before your first fall frost, so the seed has time to establish before growth slows. USDA's Plant Hardiness Zone Map is the standard reference hunters use to estimate their frost windows by zip code . Because frost dates shift by hundreds of miles north to south, a hunter in zone 7 (parts of Tennessee, North Carolina) might plant fall brassicas in early September, while a zone 4 hunter (northern Minnesota, Wisconsin) needs to get seed down by mid-August to beat the first hard frost. Check your local extension office's frost date tables rather than a generic calendar. For a full breakdown of species by planting window, see deer food plots and domain food plot seed.

When should I plant oats for deer?

Plant oats for deer in late summer to early fall, generally 45 to 60 days before your first expected frost, so the plants establish a strong root system and enough leaf growth before cold slows them down. In much of the whitetail range that lands somewhere between mid-August and mid-September, though the exact date depends on your zone. Oats are a cool-season annual grain, and they're one of the most reliably attractive early-fall plantings because deer hit tender oat shoots hard as soon as they germinate. Oats also tolerate a wider soil pH range than clover, though they still respond to phosphorus and potassium according to soil test recommendations ^[2]. A spring oat planting is also an option in northern zones as a quick cover crop or early-season plot, planted as soon as the ground can be worked in spring, but most whitetail hunters plant oats in fall for peak attraction during hunting season.

When should I plant turnips for deer?

Plant turnips for deer in mid to late summer, roughly 90 to 100 days before your first fall frost, since turnips need that much time to grow full bulbs before a hard freeze locks up the ground. In much of the whitetail range, that means late July through August, with northern zones planting earlier and southern zones having more flexibility into September. Turnips are a brassica, and deer often ignore the leafy tops early in the season, then switch hard to eating both the leaves and the bulbs once a few frosts hit and convert starches to sugars, which is one reason turnip plots often see their heaviest deer use in November and December rather than October. This is well documented anecdotally by extension wildlife programs and is part of why brassicas pair well as a late-season plot alongside an early-season clover or oat plot. Because turnips are nitrogen-hungry, as covered above, a plot planted without adequate nitrogen will produce small bulbs and thin leaf growth regardless of timing.

Do deer eat clover, and do deer actually like it?

Yes, deer eat clover readily, and it's one of the most consistently preferred food plot forages across whitetail range. Clover offers 20 to 30 percent crude protein in good growing conditions, which rivals or beats most other plot forages, and it regrows after grazing, unlike a lot of annuals that get mowed down once and don't come back ^[2] . Do deer like clover, specifically, more than other options? Clover ranks near the top of most preference studies and extension observation lists, especially in spring and summer when deer need protein for antler growth and lactation. It's not automatically the single top choice in every study or every region; preference shifts with what's available, the season, and local deer density, but clover shows up as a top performer again and again in state wildlife agency and extension plot guides. The tradeoff is that clover takes more upfront soil work. It wants a pH near 6.5 to 7.0, needs inoculant on the seed for nitrogen fixation, and takes 60 to 90 days to fully establish before it can handle heavy grazing pressure. Once it's in, though, a good clover stand can produce for 3 to 5 years with just annual mowing and a maintenance fertilizer application.

Do deer eat sorghum, and is it worth planting?

Yes, deer eat grain sorghum, both the leaves and developing seed heads, and it's a decent warm-season option in areas prone to drought since sorghum tolerates dry conditions better than corn. It's more common as a whole-plot mix ingredient or a screening/cover crop than a stand-alone attraction crop, though. Sorghum's main food plot value for a lot of hunters isn't the grain itself; it's the standing cover it provides through fall and winter, giving deer a place to bed or feel secure while browsing nearby plots. Deer will eat sorghum leaves and grain, but in most preference comparisons it doesn't outrank soybeans, clover, or brassicas as a primary draw. If your goal is maximum attraction, sorghum is a supporting player, not your headline plot.

What are deer's favorite foods, and does honey factor in at all?

Deer preference varies by season and region, but across most whitetail research and extension observation, agricultural crops like soybeans and corn, along with high-protein legumes like clover and alfalfa, and mast crops like acorns, consistently rank as top natural and planted food sources. Fruit like apples and native browse also rank high seasonally. Do deer like honey? There's no real research or wildlife agency guidance suggesting honey is a meaningful deer food or attractant, and it's not something extension services or state agencies discuss as a food plot or bait consideration. Deer are not drawn to honey the way, say, bears are; deer diets are built around forbs, browse, mast, and agricultural crops, not concentrated sugars like honey. If you've seen this claim online, treat it as internet folklore rather than anything backed by a wildlife biologist or a state agency.

How much does food plot fertilizer cost, and where can I get a soil test?

Fertilizer cost varies a lot by region, product, and current market prices, since nitrogen, phosphorus, and potassium prices swing with the broader ag commodity market. As a rough planning number, a complete fertilizer blend like 19-19-19 or a similar starter mix often runs somewhere in the range of $0.50 to $1.00 per pound of product depending on your region and the year, which on a typical application rate of 300 to 400 pounds per acre puts many plots in the $150 to $400 per acre range for fertilizer alone, before lime. Lime costs less per unit of nutrient but you often need a lot more of it. Bulk ag lime spread by a local coop can run $30 to $60 per ton delivered and spread in a lot of regions, and if your soil test calls for 2 tons per acre, that's another real cost to plan for. Get your soil test through your state's land-grant university extension office; nearly every state runs one, and most cost $8 to $20 per sample ^{[3] [4]}. Your county extension office can also tell you the mailing address and sample instructions specific to your state's lab. Your soil test lab, not a general article like this one, is the final word on your specific lime and fertilizer rate. A $99 planning tool can help turn your test results and plot goals into a workable seed and fertilizer plan, but it's built on general regional guidance, not a substitute for your lab's site-specific numbers.

What equipment do I need to apply fertilizer and lime correctly?

For plots under an acre, a hand-crank broadcast spreader or a small ATV-mounted spreader handles both fertilizer and pelletized lime fine. For plots over an acre, most hunters step up to a tow-behind broadcast spreader pulled by an ATV, UTV, or small tractor, since the volume of material (especially lime) gets heavy fast. Calibration matters more than the equipment itself. A spreader set wrong can put down half the recommended rate or double it, and either mistake costs you money and yield. Most spreader manufacturers publish setting charts for common fertilizer blends; check yours against the bag's spread rate chart before you dump product on the ground. For broader equipment and method guidance beyond fertilizer application, see food plot whitetail and deer for food.

Frequently asked questions

Do deer eat sorghum?

Yes. Deer eat both the leaves and grain heads of sorghum, though it's more commonly used as a drought-tolerant cover or screening crop than a top attraction planting. In most preference comparisons, sorghum ranks below soybeans, clover, and brassicas as a primary draw for hunters focused on maximum attraction.

Do deer eat clover?

Yes, and clover is one of the most reliably preferred food plot forages across whitetail range, offering 20 to 30 percent crude protein in good conditions according to extension forage data. It regrows after grazing and can produce for 3 to 5 years with proper mowing and fertility maintenance.

When to plant deer food plots?

Timing depends on your zone and plot type. Spring plots go in after your last frost date; fall plots (clover, brassicas, cereal grains) go in 6 to 10 weeks before your first fall frost. Check your zone's frost dates using USDA's Plant Hardiness Zone Map rather than a single national calendar date.

Do deer like clover more than other plot forages?

Clover ranks near the top of most extension and wildlife agency preference lists, especially in spring and summer for its high protein content. It's not universally the single top choice in every region or season, but it's consistently one of the highest-performing plot forages across whitetail range.

When to plant oats for deer?

Plant oats 45 to 60 days before your first expected fall frost, which lands roughly mid-August to mid-September across most of the whitetail range depending on zone. Oats are a cool-season grain and deer often hit fresh oat shoots hard as soon as they germinate.

When to plant food plots for deer, generally speaking?

There's no single date; it depends on species and your local frost dates. Warm-season plots go in after the last spring frost, cool-season plots (clover, brassicas, oats) go in 6 to 10 weeks before the first fall frost. Use your state extension office's frost date tables for your specific zone.

When to plant turnips for deer?

Plant turnips 90 to 100 days before your first fall frost, generally late July through August depending on zone. Turnips need that full window to grow bulbs before a hard freeze, and deer often don't hit the bulbs and leaves hard until after a few frosts sweeten the plant.

What is a food plot?

A food plot is a planted area, typically a half acre to several acres, seeded specifically with forage deer will eat, used to supplement natural browse and draw deer into range of a stand. It's distinct from bait or supplemental feed piles, which many states regulate under separate rules.

What are deer's favorite foods?

Preference shifts by season and region, but agricultural crops like soybeans and corn, high-protein legumes like clover and alfalfa, and natural mast like acorns consistently rank as top food sources in extension and wildlife agency observations. Fruit and tender browse also rank high seasonally, especially in spring.

Do deer like honey?

There's no wildlife research or agency guidance suggesting honey is a meaningful deer food or attractant. Deer diets center on forbs, browse, mast, and crops, not concentrated sugar sources like honey. Treat any claim about deer and honey as unverified folklore rather than science.

How do I know what fertilizer rate my food plot needs?

Pull a soil test through your state's land-grant extension office, typically $8 to $20 per sample. The report gives you pH, phosphorus, and potassium levels and a rate recommendation calibrated to your soil and the crop you're planting, which is far more reliable than any generic bag-label rate.

Does clover need nitrogen fertilizer?

Established clover fixes its own nitrogen through root nodules once inoculated, so added nitrogen is mostly unnecessary and can encourage weed and grass competition. New clover seedings sometimes get a small starter nitrogen dose to help seedlings along before the nodules become active.

How long does lime take to work in a food plot?

Agricultural lime can take 6 months or longer to fully neutralize soil acidity, according to Clemson Cooperative Extension. Apply lime as early as possible, ideally months before planting, so it has time to react and raise pH before your seed goes in the ground.

Sources

1. Pennsylvania Game Commission, Feeding Wildlife regulations: Pennsylvania regulates feeding of deer under its wildlife code, distinct from agricultural food plot plantings
2. University of Missouri Extension, Soil Testing: Basic soil test cost range through university extension labs
3. Clemson Cooperative Extension, Liming Guidelines: Agricultural lime can take 6 months or longer to fully react and raise soil pH
4. USDA NRCS, Grain Sorghum Plant Guide: Grain sorghum nitrogen requirements and use as a warm-season forage/cover crop
5. University of Georgia Extension, Clover for Wildlife Food Plots: Clover fixes atmospheric nitrogen through root nodules once established, reducing need for added nitrogen