Roundup ready food plot seed: what hunters need to know

Last updated 2026-07-25

what is roundup ready food plot seed

Roundup Ready seed is seed that's been genetically modified to tolerate glyphosate, the active ingredient in Roundup and dozens of generic herbicides. Monsanto (now Bayer) developed the trait and it's been available in commercial soybeans since 1996 and corn since the late 1990s ^[1]. In the food plot world, you'll mostly see it sold as Roundup Ready soybeans and Roundup Ready corn, packaged specifically for deer plots by companies like Whitetail Institute, BioLogic, and Eagle Seed. The idea is simple. You plant the seed, let it come up, then spray glyphosate over the top of the whole field. Every weed and grass dies. Your soybeans or corn keep growing because they carry the resistance gene. Without that trait, spraying glyphosate over a bean field would kill your beans right along with the weeds. This matters more for food plots than people realize at first. Soybeans and corn are both slow to canopy and get hammered by early weed competition, especially on the smaller, weedier fields that plots often go into rather than pristine ag ground. A glyphosate-tolerant crop turns weed control from a hand-weeding or tillage problem into a one-pass spray problem. For a broader look at how forage soybeans and other plot species fit into an overall plan, see food plot seed.

why would a hunter plant roundup ready seed instead of conventional seed

The honest answer is weed control on tough ground, and less honest answer people don't say out loud, convenience. Roundup Ready seed lets you spray one product and kill almost everything green except your crop. That's a real advantage on reclaimed ag fields, old pastures, or any plot with a heavy weed seed bank. Conventional (non-GMO) forage soybeans are cheaper per bag, sometimes by $10 to $20, but you're stuck using grass herbicides and broadleaf-safe products in combination, or pre-emergent herbicides applied at planting, or old-fashioned cultivation. That works fine on clean ground. It's a lot harder on a five-acre plot carved out of CRP or a fencerow full of Johnsongrass and pigweed. The tradeoff is cost and management. Roundup Ready seed usually costs more per bag, and you still have to buy glyphosate, a sprayer, and the diesel or ATV time to run it. If your plot is small, well-established, and low on weed pressure, conventional beans with a pre-emergent herbicide often do just as well for less total spend. This is a case-by-case call based on your specific field, not a blanket rule.

do deer eat soybeans and is roundup ready worth it for them specifically

Yes, deer eat soybeans heavily, both the leaves in summer and the pods and beans in fall and winter. Forage soybean varieties bred for food plots (as opposed to grain soybeans bred for yield) tend to have more leaf mass and better regrowth after browsing, which is exactly what you want in a plot deer will hit hard from July through September. Whether Roundup Ready is 'worth it' for the deer has nothing to do with deer preference. Deer don't care if the bean is GMO or conventional; they eat whichever leaf is in front of them. The Roundup Ready trait is entirely about your ability to keep the plot alive long enough for deer to eat it. A weed-choked soybean plot that gets overrun by foxtail and morningglory by August feeds far fewer deer than a clean one, regardless of seed type. So the real question is: can you keep your beans clean without the trait? If you can, skip it and save money. If your ground has a history of weed pressure that overwhelms young soybeans, the trait earns its keep.

do deer eat sorghum

Yes, deer eat sorghum, particularly the grain heads once they mature and dry down in fall, and they'll also browse young sorghum leaves earlier in the season. Grain sorghum (milo) is a common food plot component in the Midwest and South, often planted as a standalone fall food source or mixed into a summer blend alongside soybeans and cowpeas. Sorghum isn't a Roundup Ready crop in the food plot seed catalogs the way soybeans and corn are; most sorghum planted for deer is conventional. It's valued for drought tolerance and its ability to stand through winter, giving deer and turkeys a grain source into late season when other plots have been picked clean. It won't outcompete soybeans as a preferred summer forage, but as a fall and winter grain source it holds its own, especially in areas without much standing corn nearby.

do deer eat clover and do deer like clover

Yes, and by most accounts clover ranks among the most consistently preferred food plot forages available. White clover and red clover are both high in protein (often 20-25% crude protein in the leaf) and deer will hit an established clover plot from spring green-up through fall, with a lull during peak summer heat in some regions. Clover has nothing to do with Roundup Ready technology. It's not sold as a GMO crop for food plots, and you manage weeds in clover with grass-selective herbicides (like clethodim) rather than glyphosate, since glyphosate kills clover along with everything else. If your rotation includes both a Roundup Ready soybean field and a clover field, you need two different herbicide plans, not one. Many hunters run clover as their perennial, low-maintenance base plot and reserve Roundup Ready soybeans for a separate annual, high-tonnage summer plot. That combination covers spring through fall without asking one species to do everything. For species-specific planning across a property, deer food plots walks through how to split acreage between perennials and annuals.

when to plant food plots for deer

Timing depends entirely on what you're planting and where you are, but there are two broad windows: spring/summer plantings (April through June in most of the whitetail range) for warm-season annuals like soybeans, corn, and sorghum, and late-summer plantings (mid-August through September) for cool-season annuals like brassicas, cereal grains, and clover establishment ^[2]. Soil temperature matters more than the calendar date. Soybeans and corn want soil temps consistently above 55-60°F to germinate well, which usually lines up with April in the Deep South and late May or even early June in the northern tier. Brassicas and cereal grains want to go in 6 to 10 weeks before your area's average first hard frost so they have time to establish before cold shuts down growth. Your state land-grant extension office publishes region-specific planting date charts, and those are more reliable than any generic national calendar, since 'spring' in Georgia and 'spring' in Wisconsin are six weeks apart. Check your state's cooperative extension food plot or forage publication before locking in dates.

when to plant oats for deer

Oats go in as a cool-season planting, typically late August through September in northern and transition-zone states, and into October in the Deep South. Oats are one of the fastest-germinating cereal grains, often showing green growth within 5 to 7 days of a good rain, and deer frequently hit young oat shoots hard within a couple weeks of emergence. Oats aren't cold-hardy compared to winter wheat or triticale; a hard freeze in the teens will usually kill oats back for good, while wheat and rye can survive and regrow into the next spring in many regions. That makes oats a great early-fall attraction planting but not a season-long food source in colder climates. In the South, oats can persist much of the winter since freezes are milder and less frequent. A lot of successful fall blends mix oats with wheat or rye plus a brassica like turnips, so you get fast early growth from the oats and standing forage that survives deep winter from the small grains and brassica bulbs.

when to plant turnips for deer

Turnips are a late-summer planting, generally 60 to 90 days before your first expected hard frost, which puts most of the whitetail range in a mid-July to early September window. Turnips need that runway to bulb properly and build sugar content; a frost or two after planting actually improves palatability because the plant converts starches to sugars as a cold-tolerance response. Deer often ignore turnip tops and bulbs early in the season when soft mast and ag crops are still available, then switch hard to turnips once a freeze sweetens them up and other food sources thin out. That's why turnip plots sometimes look untouched in October and get hammered flat by December. Don't judge a turnip plot's success in its first month. Brassica seed like turnips is not part of the Roundup Ready lineup; weed control there typically comes from a clean seedbed, sometimes a pre-plant glyphosate burndown before the brassica seed goes in (glyphosate is fine to use before planting since it's non-selective and the brassica isn't in the ground yet).

what is a food plot

A food plot is a planted area, usually somewhere between a quarter-acre and several acres, established specifically to provide supplemental forage for deer and other wildlife on hunted or managed land. Plots range from small 'kill plots' tucked into timber near a stand, to large agricultural-style fields of soybeans or corn meant to hold deer on a property through summer and fall. Food plots serve two overlapping goals: nutrition (helping deer, especially does and growing bucks, get better protein and energy than native browse alone provides) and hunting access (giving you a predictable place deer will show up during shooting light). Most state wildlife agencies treat planted food plots differently from bait piles or feeders under their game laws, but the line between 'food plot' and 'baiting' varies by state, so check your state wildlife agency's regulations before combining plots with any supplemental feed ^[3]. For a full rundown of what counts as a food plot versus other supplemental feeding methods, food plot whitetail covers the basics for readers just getting started.

what are deer's favorite foods

Deer preference shifts by season and region, but across food plot studies and extension forage trials, a few species consistently rank at the top: soybeans and clover for spring through fall forage, and brassicas (turnips, radishes) plus acorns and standing corn for late-season energy. Native browse like greenbrier, honeysuckle, and forbs also makes up a huge share of a deer's actual diet outside of plots. Protein content is one useful proxy for preference, though not the only driver. Clover and soybean leaves commonly run 20-30% crude protein, well above most native browse, which explains why deer key in on them so heavily in summer when does are lactating and bucks are growing antlers. Late in the year, energy (carbohydrates and fat) matters more than protein, which is why acorns, corn, and sweetened brassica bulbs become priorities as temperatures drop. There's no single 'favorite,' and deer preference studies (like camera-based forage selection research from university deer programs) show real variability by region, deer density, and what else is available on the landscape. A soybean field surrounded by thousands of acres of row-crop soybeans gets far less attention than the same field as the only soybean patch for miles.

do deer like honey

There's no research or agricultural extension guidance suggesting deer seek out honey or that it's used in food plot management in any meaningful way. Deer are herbivores and browsers; their diet is built around plant material, not the byproducts of pollinator insects. If you've heard of 'honey holes' in deer hunting, that phrase refers to a productive hunting spot, not an actual food source. There are commercial deer attractant products that use sugar, molasses, or sweet scents to draw deer to a specific spot, and some hunters mix in sweeteners with mineral or protein supplements. Whether these products actually change deer behavior in a meaningful way isn't well studied, and any use of them falls under the same state baiting and feeding rules that apply to other supplemental feed, which vary significantly by state and sometimes by county (some states ban baiting outright, others allow it with restrictions, others allow it only outside a certain radius of a stand) ^[3]. Check your state wildlife agency's current regulations before using any attractant, since rules change and enforcement is real.

roundup ready vs conventional seed cost and management comparison

Factor	Roundup Ready soybeans/corn	Conventional (non-GMO) soybeans/corn
Seed cost	Higher per bag, often a premium of roughly $10-$25+ depending on brand and bag size	Lower per bag
Weed control method	Glyphosate over-the-top, one or two passes	Pre-emergent herbicide, grass-selective herbicide, or tillage/cultivation
Best fit	Weedy reclaimed fields, larger plots, hunters wanting simple spray schedule	Clean established ground, small plots, hunters wanting to avoid extra herbicide cost
Equipment needed	Sprayer (ATV, UTV, or tractor-mounted), glyphosate	Sprayer or cultivator depending on method used
Deer preference	No difference; deer don't distinguish GMO from conventional forage	No difference	The honest takeaway: the trait buys you simpler weed management, not better deer attraction. If your fields are already clean and you're comfortable spot-spraying broadleaf weeds, conventional seed with a good pre-emergent often gets you 90% of the result for less money. If you're breaking new ground out of pasture or CRP with a real weed seed bank, Roundup Ready earns its cost difference fast, mostly by saving you a second or third herbicide pass.

how to get a planting plan built around your soil and region

Everything above is general guidance. Your actual planting dates, seed mix, and herbicide program should be built around your soil test results, your USDA plant hardiness zone, and what your regional cooperative extension office recommends for your specific county ^[2]. A soil test tells you your pH and nutrient levels; your soil test lab's recommendations for lime and fertilizer are the authority here, not a generic online chart. If you want a simple starting point tailored to your property instead of piecing together advice from a dozen sources, PlotSeason's $99 one-time Custom Food Plot Plan builds a species and timing recommendation around your zone, soil test, and equipment on hand. It's general guidance built from real agronomic data, not site-specific agronomy advice, and it doesn't replace your soil lab's fertilizer recommendations or your state wildlife agency's rules on feeding and baiting. Whatever plan you land on, cross-check planting windows against your local extension office's forage variety guide before you buy seed. Seed reps and online calendars are a good starting point; your county extension agent knows your actual frost dates and soil conditions.

Frequently asked questions

Is Roundup Ready food plot seed the same as regular Roundup Ready farm seed?

Functionally yes. It's the same glyphosate-tolerant trait used in commercial agriculture, just packaged in smaller bags and sometimes bred as forage-type varieties (more leaf, better regrowth after grazing) rather than high-yield grain varieties. The genetics and herbicide tolerance work the same way in both cases.

Do I have to use glyphosate if I plant Roundup Ready seed?

No, but there's little reason not to. The trait only matters if you spray glyphosate over the top for weed control. If you plant Roundup Ready seed and never spray, you've just paid a premium for seed with an unused trait and gotten no weed control benefit.

Do deer eat sorghum better than corn?

Not necessarily. Both are grain sources deer hit hard in fall and winter once heads or ears mature. Sorghum tends to be more drought-tolerant and cheaper to establish on marginal ground, while corn generally produces more total tonnage per acre where soil and rainfall support it.

Do deer like clover more than soybeans?

Both rank near the top of preferred food plot forages, and preference often depends on season and growth stage. Clover gets hit hard from spring through fall with a summer lull in hot climates; soybeans provide huge tonnage from July through frost, especially once pods form.

When should I plant food plots for deer in my area?

Warm-season annuals like soybeans and corn go in April through June depending on your region's soil temperature. Cool-season plantings like brassicas, oats, wheat, and clover establishment go in mid-August through September. Check your state cooperative extension's regional planting date chart for your county.

When is the best time to plant oats for deer?

Late August through September works for most of the whitetail range, with the Deep South able to plant into October. Oats germinate fast, often within 5 to 7 days, but they aren't cold-hardy like wheat or rye and will winterkill after a hard freeze in most northern climates.

When should turnips go in the ground for deer plots?

Plant turnips 60 to 90 days before your area's first expected hard frost, usually mid-July through early September. Turnips need that time to bulb up, and cold weather afterward actually sweetens the bulbs and tops, which is why deer often hit turnip plots hardest in late fall and early winter.

What exactly is a food plot in deer hunting terms?

A food plot is a planted patch, from a quarter-acre kill plot to a multi-acre field, established to give deer supplemental forage and give hunters a predictable spot to hunt. It differs from baiting or feeding under most state game laws, though the legal line varies by state, so check your state wildlife agency's current rules.

What are deer's favorite foods overall?

There's no single favorite; it shifts by season. Soybeans and clover top most preference lists spring through fall due to high protein content (often 20-30% crude protein in the leaf), while acorns, standing corn, and sweetened brassica bulbs become priorities in late fall and winter when energy matters more than protein.

Do deer eat sorghum grain heads or just the leaves?

Both, at different times. Deer will browse young sorghum leaves in summer, but the grain heads become a major draw once they mature and dry in fall. Standing sorghum often persists through winter better than most other grain crops, making it valuable as a late-season food source.

Do deer actually like honey or sweet attractants?

There's no credible research showing deer seek out honey specifically; deer are browsers built around plant forage. Sweetened attractant products using sugar or molasses exist commercially, but their effectiveness isn't well studied, and using them falls under state baiting and feeding rules, which vary widely and should be checked before use.

Is Roundup Ready seed worth the extra cost for a small food plot?

Often not. On a small, well-established plot with low weed pressure, conventional seed paired with a pre-emergent herbicide usually performs just as well for less money. Roundup Ready earns its premium mainly on larger, weedier fields where one glyphosate pass replaces multiple herbicide applications or tillage passes.

Sources

1. USDA Economic Research Service, Adoption of Genetically Engineered Crops in the U.S.: Roundup Ready soybeans and corn adoption history and glyphosate-tolerant trait background
2. University of Tennessee Extension, Wildlife Food Plots publication: Regional planting date windows for warm-season and cool-season food plot species
3. Association of Fish and Wildlife Agencies, state baiting and feeding regulation summaries: State baiting and feeding regulations for deer vary significantly by state
4. U.S. Environmental Protection Agency: Glyphosate is the herbicide active ingredient used with Roundup Ready crops, and EPA regulates its use and safety review.
5. University of Georgia Extension: Comparison of forage soybean varieties and their attractiveness and nutritional value to deer.