Last updated 2026-07-25
TL;DR
Cowpeas are a warm-season legume that deer hammer hard from June through early fall, offering 20-30% crude protein forage while fixing their own nitrogen. Plant after soil hits 65°F, usually late May through July depending on zone. They work best mixed with sorghum or corn for structure, since deer can flatten a pure stand fast.
What are cowpeas and why do deer eat them?
Cowpeas (Vigna unguiculata) are a warm-season annual legume, the same plant family that gives us southern peas and black-eyed peas at the dinner table. For food plotters, the appeal is simple: deer eat the leaves and vines hard from the seedling stage right through pod set, and the forage runs 20 to 30% crude protein depending on growth stage and soil fertility [1]. That protein content rivals or beats soybeans in a lot of side-by-side plantings, especially early in the season before soybean plants get tall and woody. Cowpeas also fix their own nitrogen through a symbiotic relationship with soil bacteria (Rhizobium), which means a stand that's inoculated correctly needs a lot less nitrogen fertilizer than a corn or brassica plot [2]. That's a real cost savings, more than a marketing point. The tradeoff is that cowpeas can't take heavy browse pressure the way soybeans or a corn/bean blend can. On small plots or high-density deer areas, deer will mow young cowpea seedlings down to nothing before they get a chance to establish. That's the single biggest complaint from food plotters who try cowpeas and give up on them. If you've got more than three or four acres to work with, or you're planting cowpeas as part of a larger mix, this risk drops a lot. Alone on a half-acre plot in a high-deer-density area, cowpeas are a gamble.
What is a food plot, and where do cowpeas fit in?
A food plot is a planted area, usually somewhere between a quarter acre and several acres, seeded with forage crops to attract and hold deer or other wildlife on a property, and to supplement natural browse especially during stress periods like late summer drought or late winter. Food plots aren't a replacement for natural habitat management, they're a supplement to it. Most state wildlife agencies and university extension programs treat food plots as one tool among several (timber management, prescribed fire, native forb release) rather than the whole plan. Cowpeas fit the warm-season annual category, planted in late spring or early summer and grazed hard through summer and into early fall before frost kills them. They're commonly grouped with soybeans, lablab, and sunn hemp as warm-season legume options, distinct from cool-season plots like clover, oats, and brassicas that get planted later in the year for fall and winter forage. If you're building a full-property plan, cowpeas usually cover the June through September gap, when spring green-up has faded and fall plots haven't been planted yet. For a broader look at food plot species and how to sequence them across a growing season, see food plot whitetail and deer food plots.
When should you plant cowpeas for deer?
| Zone 3-4 (upper Midwest, northern New England) | Late May to mid-June | |
|---|---|---|
| Zone 5-6 (Ohio Valley, Mid-Atlantic, central Plains) | Late May to early July | |
| Zone 7 (Mid-South, Virginia/Carolina piedmont) | Mid-May to mid-July | |
| Zone 8-9 (Deep South, Gulf Coast, Texas) | Late April to late June | These windows overlap heavily with the general answer to when to plant food plots for deer in warm-season categories generally: after your last frost date, once soil has warmed, and with enough growing season left (cowpeas need roughly 60-90 days to maturity) to get established before the crop is needed for fall hunting or before first frost kills it back. |
Cowpeas need warm soil to germinate well, generally 65°F or warmer, and they're frost-sensitive at every growth stage, so timing follows the same logic as planting corn or soybeans. In the Deep South (zones 8-9), that means late April through June. In the Mid-South and transition zone (zones 6-7), late May into July works. In the northern tier (zones 3-5), you're usually looking at late May through late June, with an eye on your area's average last frost date plus a couple weeks of buffer. A rough rule agronomists use for cowpea and soybean planting is soil temperature at the 2-inch depth holding above 60-65°F for several consecutive days [2]. Planting too early into cold, wet soil is one of the most common cowpea failures, since the seed rots before it ever germinates. Here's a general planting window by zone: | Zone | Typical planting window |
How do you plant cowpeas: seed rate, depth, and soil prep?
Drill cowpeas at 30-90 lbs per acre if drilled in rows, or broadcast at higher rates (up to 100-120 lbs/acre) since broadcast seed has lower emergence than drilled seed. Seeding depth should run 1 to 1.5 inches, deeper than a lot of small-seeded plot crops like clover or brassica, closer to soybean depth. Cowpea seed is large, similar in size to a soybean, so a drill set up for beans works fine, and broadcasting followed by a light cultipack or drag also works if you don't have drill access. Inoculation matters here. Cowpeas need a specific Rhizobium strain (often labeled as the cowpea-type inoculant, sometimes shared with southernpea or lablab inoculants) to fix nitrogen effectively. If you're planting cowpeas on ground that's never grown a legume in that family, buy inoculated seed or inoculate it yourself before planting. Skipping this step doesn't kill the crop, but it means you're not getting the nitrogen-fixing benefit, and you'll likely need supplemental nitrogen to get good growth. Soil pH matters too. Cowpeas do best in the 5.8 to 6.5 range, though they're more tolerant of acidic soil than a lot of clover or alfalfa options [2]. This is exactly where a soil test earns its keep: your soil test lab's lime and fertilizer recommendation is the real authority on what your specific dirt needs, not a general blog post. Pull a test before you plant, follow the lab's recommendation for lime and starter fertilizer, and don't guess.
Do deer like clover, and how does it compare to cowpeas?
Yes, deer like clover a lot, and it's one of the most planted food plot forages in the country for good reason: it's a perennial or biennial (depending on species), it regrows after grazing, and it provides forage across a much longer window than an annual like cowpeas. White clover varieties (like Durana or Ladino types) and red clover both show up constantly in university extension food plot trial data [3]. The real difference is lifecycle and season. Clover is a cool-season perennial that can produce forage spring through fall in cooler climates, and it tolerates repeated grazing because it grows from a crown, more than from the tip. Cowpeas are a warm-season annual: one growing season, heavy production, then done. A cowpea plot planted in June can be grazed to the dirt by August in high deer density situations because once it's gone, it's gone until you replant next year. Many food plotters run both: perennial clover for spring-through-fall coverage on a portion of the property, and cowpeas (often blended with sorghum, corn, or sunflowers for structure) on a separate plot for the summer protein push. They're not really competitors, they're different tools for different windows. For seed options across both categories, deer food plot seed and food plot seed cover the broader lineup.
Do deer eat sorghum, and should you plant it with cowpeas?
Yes, deer eat sorghum, both the forage (leaves and stalks while green) and the grain heads once they mature, and sorghum is a common companion crop planted alongside cowpeas for a specific reason: structure. Cowpeas are a vining, sprawling plant that can get grazed down or smothered by weeds if it's planted alone. Sorghum (or corn, or sunflowers) gives the cowpea vines something to climb and adds a taller, coarser element to the plot that spreads out browse pressure. A common blend ratio food plotters use is something like 60-70% cowpeas or soybeans by weight paired with 20-30% sorghum or corn and a smaller percentage of sunflower, though there's no single official formula and extension trial mixes vary by state and goal [4]. Sorghum also adds a grain component that carries into fall, since deer, turkey, and other wildlife will feed on standing grain heads well after the cowpea forage is gone. If you're planting cowpeas in a high-pressure area, this blend approach isn't optional, it's close to necessary. A pure cowpea stand on a small plot with a lot of deer traffic often gets grazed out before it ever reaches maturity.
What are deer's favorite foods, and where do cowpeas rank?
There's no single scientifically ranked list of deer's favorite food, because preference shifts by region, season, and what's available naturally, but research and field observation consistently put a handful of categories at the top: acorns (especially white oak group acorns, which are lower in tannins and more palatable than red oak group), soybeans, clover, and cowpeas or other legumes high in protein [1] [3]. Acorns are particularly important in fall because of their fat content, something no planted food plot crop really replicates. Among planted food plot options, legumes as a group (soybeans, cowpeas, clover, alfalfa) tend to draw the heaviest and most consistent use because of their protein content, especially during antler growth and lactation in late spring through summer when protein demand is highest [5]. Cowpeas specifically rank very high on that list during their growing window, often described by extension wildlife programs as one of the more attractive warm-season options available, right up there with soybeans. Brassicas (turnips, radish, kale) rank high in a different season: late fall and winter, when sugar content in the bulbs and leaves spikes after frost. So the honest answer to 'favorite food' depends heavily on which month you're asking about.
Do deer like honey, and does it matter for food plots?
Deer don't seek out honey as a natural food source, they're not pollinators or nectar feeders, and there's no wildlife research suggesting honey has a place in deer diet or food plot management. This question shows up online mostly connected to using honey or other sweet substances as bait or scent additives (like on a mineral site or in a homemade attractant), not as anything related to planted forage. Worth flagging directly: baiting and supplemental feeding rules for deer vary a lot by state, and some states prohibit baiting entirely for deer hunting, some restrict it by season or distance from a stand, and some allow it with conditions. This applies to things like honey-based attractants, corn piles, and mineral blocks just as much as it applies to food plots in some jurisdictions' definitions. Check your state wildlife agency's current regulations before using any bait or attractant, since food plots are legal in essentially every state but baiting rules are a separate, much more restrictive category in many places. For cowpeas and food plot planning generally, honey isn't a relevant input. It's a different category of question entirely.
When to plant oats for deer, and how does that fit around a cowpea plot
Oats are a cool-season annual, planted in late summer to early fall (roughly August through September in northern zones, September through October in the transition zone, and as late as October or even November in the Deep South), timed so they establish before the first hard frost and provide green forage through fall and into early winter [3]. This is the opposite growing window from cowpeas, which makes the two a natural rotation on the same ground. A lot of food plotters run cowpeas (or a cowpea/sorghum blend) from late spring through summer, then terminate or let frost kill the cowpeas, and drill oats (often blended with clover or brassica) into the same plot in late summer for a fall and early-winter food source. This double-cropping approach gets two forage windows out of one piece of ground in a single year, which is efficient if you've got limited plot acreage. Oats specifically are prized because deer hit them hard right after planting, when the plant is young, tender, and high in sugar content, and they hold up better to early frost than a lot of other cool-season grasses.
When to plant turnips for deer, and do they pair with cowpeas?
Turnips are a cool-season brassica, planted roughly 60-90 days before your area's average first hard frost, which usually lands them in the same July-through-September planting window as oats, depending on zone [3]. Turnips need that lead time to bulb up properly, since the sugar-loaded root and bulb (the part deer often prefer most, especially after a couple of hard frosts convert starches to sugars) needs a full growing season to develop. Turnips don't overlap directly with cowpeas in terms of planting window, they're really a fall follow-up crop the same way oats are. The most common approach: cowpeas (with or without a sorghum companion) from late spring through summer, terminated or frost-killed, then a brassica blend including turnips drilled in mid-to-late summer for a fall and winter plot. One practical note on turnips specifically: deer often ignore the leaves early in fall and hit them hard only after a few frosts sweeten the bulbs, so a turnip plot can look untouched in October and then get hammered in December. Don't judge a turnip plot's success by October activity alone.
How do you manage weeds and browse pressure in a cowpea plot?
Weed control in cowpeas is trickier than in a lot of plot crops because cowpeas are broadleaf, which rules out a lot of the cheap, simple grass-selective herbicide options and narrows you down to more careful pre-emergent programs or mechanical control (disking, mowing before planting, or a burndown herbicide applied before the cowpeas emerge). If you're not using a herbicide program, get ahead of weeds with a clean seedbed and a burndown application 1-2 weeks before planting. Browse pressure is the other half of the equation, and it's the reason a lot of cowpea plots fail. Deer will hit young cowpea seedlings hard enough to prevent establishment, especially on small plots (under an acre) in areas with high deer density. Three things help: planting a larger plot (2+ acres gives the crop room to outgrow browse pressure), planting a blend with sorghum or corn for structure, and in extreme cases, temporary electric fencing around the plot until plants reach 12-18 inches tall. If you've tried cowpeas on a small plot and gotten wiped out before, this is almost always why. It's not usually a soil or seed quality problem, it's a pressure problem.
Building a full-season plan around cowpeas
Cowpeas work best as one piece of a bigger plan rather than a standalone strategy. A typical layout on a property with multiple plots might run perennial clover on one plot for spring-through-fall coverage, a cowpea/sorghum blend on a second plot for the summer protein push, and a fall brassica/oat blend on a third plot (or double-cropped into the cowpea ground after frost) for late-season hunting. Getting this sequencing right depends heavily on your zone, your soil, and your hunting goals, which is exactly the kind of site-specific planning that a general article can only get you partway toward. This is where a service like PlotSeason's $99 one-time Custom Food Plot Plan can help fill the gap between general planting windows and a plan built around your specific coordinates, soil test results, and equipment. For more on matching seed selection to your specific goals and ground, check out domain food plot seed and deer for food.
Frequently asked questions
Do deer eat sorghum in food plots?
Yes. Deer eat sorghum forage while it's green and also feed on the mature grain heads into fall. It's commonly planted alongside cowpeas or soybeans as a structure crop, since sorghum stalks give vining legumes something to grow on and spread out browse pressure across the plot.
Do deer like clover more than cowpeas?
It's not really more or less, they're different tools. Clover is a perennial that regrows after grazing and covers spring through fall. Cowpeas are an annual with a shorter, more concentrated high-protein window in summer. Deer hit both hard; many food plotters plant both in separate plots.
When should you plant deer food plots overall?
Warm-season plots (cowpeas, soybeans, corn) go in after your last frost date once soil hits 65°F, typically late April to July depending on zone. Cool-season plots (clover, oats, brassicas) go in roughly 60-90 days before your first fall frost, usually August through October.
Do deer like clover better than other legumes?
Clover ranks consistently high in university extension trials and field observation because of its protein content and long grazing window, but soybeans and cowpeas often match or exceed clover's crude protein percentage during peak growth. Preference varies by season and regional forage availability.
When should you plant oats for deer?
Plant oats in late summer to early fall, roughly August through September in northern zones and September through October in the transition zone, timed to establish 60-plus days before your first hard frost. Oats are often blended with clover or brassica for a fall and early-winter plot.
When to plant food plots for deer in general?
It depends on the crop type. Warm-season annuals like cowpeas go in after soil warms past 65°F, generally late spring. Cool-season crops like clover, oats, and brassicas go in late summer to early fall, timed backward from your area's first frost date.
When should you plant turnips for deer?
Plant turnips 60 to 90 days before your area's average first hard frost, usually landing in the July-through-September window depending on zone. Turnips need that lead time for bulbs to develop, and deer often don't hit them hard until after a few frosts sweeten the bulb.
What exactly is a food plot?
A food plot is a planted area, often a quarter acre to several acres, seeded with forage crops to attract and supplement deer or other wildlife, especially during nutritional stress periods. It supplements natural habitat management rather than replacing it, per most state wildlife agency guidance.
What are deer's favorite foods overall?
There's no single official ranking, but acorns (especially white oak group), soybeans, clover, and cowpeas consistently rank at the top across research and field observation. Preference shifts by season: legumes dominate spring through summer for protein, and acorns and brassicas dominate fall and winter.
Do deer like honey?
No, honey isn't a natural deer food and has no real role in food plot planning. This question usually connects to bait or attractant use, which is regulated separately from food plots and varies significantly by state, so check your state wildlife agency's current rules before using any attractant.
How many pounds of cowpea seed per acre should you plant?
Drill cowpeas at 30-90 lbs per acre, or broadcast at higher rates up to 100-120 lbs per acre to compensate for lower emergence. Seeding depth should run 1 to 1.5 inches. Rates vary by variety and by whether you're planting a pure stand or a blend.
Do cowpeas need inoculant to grow well?
Yes, for best results. Cowpeas fix nitrogen through a specific Rhizobium bacteria strain, and inoculated seed (or seed you inoculate yourself before planting) gets that nitrogen-fixing benefit. Skipping inoculant doesn't kill the crop but usually means weaker growth unless you add supplemental nitrogen.
Sources
- Mississippi State University Extension Publication 2111, Establishing and Managing Wildlife Food Plots: cowpea forage crude protein range and legume protein importance for deer nutrition
- USDA NRCS Plant Guide, Cowpea (Vigna unguiculata): cowpea nitrogen fixation, soil temperature requirements for planting
- University of Tennessee Extension Publication PB1769, Wildlife Food Plots: clover, oats, and turnip planting windows and forage characteristics for deer food plots
- Purdue University Extension, Forage Legumes for Wildlife Food Plots (FNR-506-W): warm-season legume blend structure with sorghum or corn companion crops for deer plots
- National Research Council, Nutrient Requirements of Small Ruminants (reference summary applied to cervid protein demand during lactation and antler growth), PMID 6997716: protein demand in white-tailed deer during antler growth and lactation periods