Watermelon
Citrullus lanatus
Warm-season annual vine in the cucurbit family (Citrullus lanatus), grown for large, sweet, high-moisture fruit (roughly 92% water) harvested at full ripeness for the fresh market. Cultivated as a summer annual across USDA hardiness zones 3-11, but success depends far more on accumulated heat than on cold-hardiness: the crop needs a long frost-free season with warm days and warm nights, and is killed by even light frost at either end of the season. In short-season climates growers favor early 'icebox' types and transplants laid on plastic mulch with row cover to capture heat; in long, hot-summer regions full-size seeded and seedless types are direct-seeded or transplanted in open field. Seedless (triploid) varieties now dominate fresh-market shipments and require a diploid pollenizer interplanted in the field plus warm soil for reliable transplant establishment. Marketed almost entirely fresh as whole or fresh-cut fruit; value-added uses include juice, rind pickles, and seed.
Crop Snowflake Score
/acre
/acre
/acre
years
Overview
Optimal growth occurs at roughly 70-90F days with night temperatures above 60F; growth stalls below about 60F and fruit set is poor in cool, cloudy conditions. Soil temperature at planting should be at least 65-70F for direct seeding and transplanting. Plants are deep-rooted and moderately drought-tolerant once established but size and quality depend on steady moisture from establishment through fruit sizing, with controlled deficit near harvest to raise sugar and reduce splitting; drip irrigation under plastic mulch is standard in intensive production. Bees are essential for pollination, especially for triploid seedless types that need pollen from a diploid pollenizer. Typical fresh-market yield is on the order of 350-450 cwt/acre (about 35,000-45,000 lb/acre). Major pests and diseases include cucumber beetles (vectors of bacterial wilt), aphids, squash bugs, spider mites, gummy stem blight, anthracnose, Fusarium wilt, downy and powdery mildew, and viruses; rotation of at least 3-4 years away from cucurbits and use of resistant varieties and grafted transplants are common controls. Fruit is non-climacteric and does not ripen further after harvest, so timing the cut to peak maturity (ground-spot color, tendril dieback, dull rind sheen) is critical. Whole fruit holds about 2-3 weeks at 50-60F and 90% relative humidity; chilling injury occurs below about 45F.
Growing Season
- Plant
- late spring – early summer
- Harvest
- mid summer – early fall
- Frost-free days
- 80+
- GDD (base 50°F)
- 1,800 – 2,500
Yield
- Typical yield
- 397 cwt/acre
- Productive lifespan
- 1 years
- Labor
- 60 hrs/acre
Market Fit
Active Regional Buyers
No buyer on record for this crop in the catalog's buyer network.
Price Trend Stable/Up
3-year price trend recorded as "stable".
Supply Below Demand
No buyer network on record — cannot establish that regional demand absorbs additional supply.
Multiple Buyer Channels
0 recorded buyers and 6 documented market channels. Multiple routes to market.
Value-Added Potential
6 documented market channels, including value-added and direct-to-consumer routes.
Market Growth Projected
Mature vegetable market; growth over a 5-year horizon expected to track population rather than outpace it.
Market Channels
Climate Fit
Hardiness Zone Match
Crop tolerates zones 3-11; region spans 5-6. Overlaps.
GDD Sufficient
Crop needs 1800 GDD (base 50F); region accumulates 2500+. Sufficient.
Precipitation Compatible
Crop needs ~22 in; region receives ~38 in/yr. Compatible, irrigation available as supplement.
Frost-Free Season OK
Crop needs 80 frost-free days; region provides ~180. Sufficient.
Chill Hours Met
Not applicable — annual crop has no winter chill requirement.
Climate Trend Favorable
Crop spans 9 hardiness zones (3-11). Wide adaptive range buffers against warming trend.
Soil Compatibility
Soil Texture
Drainage
Infrastructure Fit
Equipment Compatible
11 documented equipment requirements. Within range adaptable from general row-crop or orchard equipment.
Storage Available
3 documented storage/handling requirements, all achievable with conventional on-farm or third-party facilities.
Irrigation Compatible
Requires ~22 in. Deliverable with conventional drip or overhead irrigation.
Field Layout Suitable
Suited to the small-to-mid-size fragmented parcels typical of the region.
Labor Availability
60 labor hr/ac vs catalog 75th percentile 250 hr/ac. Manageable with typical farm labor.
Processing Proximity
No processing or cooperative buyer on record for this crop; product would need to travel or be sold fresh.
Equipment Requirements
planting
Raised beds with black plastic mulch and buried drip tape are standard for commercial watermelon, warming soil, conserving moisture, and suppressing weeds. Forms beds and lays mulch and tape in one pass. Typical range $5,000-15,000.
Watermelons are commonly transplanted into plastic mulch for an early, uniform stand; the water-wheel punches holes and delivers starter water. Typical range $8,000-20,000.
Used in direct-seeded operations to place single seeds at target spacing; less common than transplanting for fresh-market watermelon. Typical range $3,000-15,000.
irrigation
Delivers precise water and fertigation under plastic mulch, supporting fruit sizing and quality while keeping foliage dry to limit foliar disease. Typical installed cost $600-1,600 per acre.
spraying
Frequent protectant fungicide programs (anthracnose, gummy stem blight, downy mildew) and insecticide applications require a reliable boom sprayer with good coverage of sprawling vines. Typical range $4,000-20,000.
cultivation
General-purpose power unit for bed prep, mulch laying, transplanting, and spraying. Fixed cost shared across the operation. Typical range $25,000-65,000.
general
Watermelon is highly insect-pollination dependent; growers commonly rent honey bee hives (often 1-3 per acre, more for seedless types) to ensure fruit set. Seedless plantings also require interplanted diploid pollenizers. Cost is per-acre seasonal rental.
harvesting
Watermelons are hand-cut and hand-loaded; a self-propelled harvest conveyor or loading boom carries fruit from the field to trucks, sharply reducing labor and bruising. Typical range $15,000-60,000.
Hand harvest requires knives/clippers and sturdy bins or bulk bins for a heavy crop. Low fixed cost shared across the operation.
post_harvest
Watermelon is chilling-sensitive and is held near 10-15C (not cold storage) to avoid chilling injury and pitting; cooling removes field heat and extends shelf life. Typical range $10,000-45,000.
A packing-shed line grades and sizes melons for pack-out and uniform loads. Optional for direct-market growers; common for shippers. Typical range $15,000-60,000.
Storage Requirements
Fresh cold storage
Temperature
50–59°F
Humidity
85–90%
Max Storage
21 days
Short-term transit (precooled, 7°C/45°F)
Temperature
45–45°F
Humidity
85–90%
Max Storage
7 days
Ambient (uncooled, prompt sale)
Temperature
60–75°F
Humidity
85–90%
Max Storage
7 days
Finance Fit
Revenue Above Average
Gross revenue $6,400/ac vs catalog median $5,500/ac. Above median.
Input Costs Acceptable
Input cost $4,000/ac vs catalog 75th percentile $5,387/ac. Within typical range.
Payback Period OK
Reaches full production in 0 years. Acceptable payback.
Insurance Available
Federal crop insurance or an equivalent risk product is available.
Revenue Per Labor Hour
Net return per labor hour $40.00 ($2,400/ac over 60 hr/ac) vs catalog median $13.16. Above median.
Grants/Subsidies
Vegetable crops are eligible under the USDA Specialty Crop Block Grant Program.
Economics Breakdown
| Avg Price/Unit | $21/per cwt (fresh market, season-average) |
| Gross Revenue/Acre | $6,400 |
| Annual Operating Cost | $4,000/acre |
| Establishment Cost | —/acre |
| Total Input Cost | $4,000/acre |
| Net Return/Acre | $2,400 |
| Revenue/Labor Hour | — |
| Crop Insurance | Available |
Source: USDA NASS Vegetables 2024 Summary (Feb 2025); USDA ERS; AgMRC Watermelon profile; regional extension budgets (UF/IFAS, U. Arkansas, Penn State) (2026)
Risk Fit
Manageable Pest/Disease
12 documented risk factors. High risk load (12 documented factors) demanding intensive management.
Market Diversified
0 buyers, 6 channels. Not dependent on a single outlet.
Low Establishment Risk
0 years to full production. Low establishment exposure.
Climate Resilient
Tolerates zones 3-11 (9 zones). Broad tolerance indicates resilience to seasonal variability.
Regulatory Burden Low
No crop-specific licensing or reporting regime beyond standard food-safety and pesticide rules.
Diversifies Portfolio
Adds a vegetable revenue stream distinct from the region's grape-dominated base.
Known Risks
disease
The most important soilborne disease of watermelon. The fungus invades the vascular system causing runner wilt, yellowing, and plant death, often as plants begin to set fruit. Race-specific; resting structures persist in soil for many years, making infested fields a long-term hazard.
Causes leaf lesions, vine dieback, and sunken dark spots on fruit that destroy market value. Favored by warm, wet, humid weather and spread by rain splash and movement through wet foliage; seedborne and survives on residue.
Produces stem cankers that ooze gummy exudate, blights foliage, and rots fruit (black rot). A major yield- and quality-limiting disease of watermelon, favored by warm humid conditions; seedborne and residue-borne.
A seedborne bacterial disease that causes seedling blight in transplant houses and water-soaked, cracking lesions on fruit that render melons unsalable. Can spread explosively in transplant production and under overhead moisture.
pest
Striped, spotted, and banded cucumber beetles feed on seedlings, foliage, flowers, and fruit rind, and can transmit bacterial wilt. Seedling-stage feeding is especially damaging and beetles are present throughout the season.
Melon/cotton aphid (Aphis gossypii) colonizes leaf undersides, reduces vigor, and is a key vector of mosaic viruses (CMV, WMV, ZYMV, PRSV) that stunt plants and mottle and deform fruit. Whiteflies similarly vector viruses and cause silverleaf.
Tiny mites feed on leaf cells during hot, dry weather, causing stippling, bronzing, and rapid defoliation that exposes fruit to sunburn. Outbreaks are frequently triggered by broad-spectrum insecticides that kill natural enemies.
Cutworms, corn earworm, loopers, armyworms, and pickleworm/melonworm can chew the rind surface and bore into fruit, scarring melons and downgrading or destroying marketable fruit even when foliar feeding is light.
weather
Watermelon requires substantial bee activity to move pollen; very high temperatures and poor weather during bloom reduce bee foraging and pollen viability, causing blossom drop, misshapen fruit, and poor set. Seedless (triploid) types need a diploid pollenizer and are especially set-sensitive.
Heavy or uneven rainfall, especially as fruit approach maturity, drives rapid water uptake that splits and cracks melons, and prolonged wet foliage accelerates anthracnose, gummy stem blight, and downy mildew.
environmental
A physiological disorder, not a pathogen: localized calcium deficiency aggravated by uneven moisture causes sunken, leathery dark lesions at the blossom end of the fruit, making affected melons unmarketable.
market
Watermelon is heavy and bulky with relatively low value per unit weight, so freight is a large share of delivered cost; fruit is perishable and chilling-sensitive, and seasonal oversupply windows can compress prices sharply.
Nutritional Yield
Macronutrients
| Nutrient | Per 100 g | Per acre |
|---|---|---|
| Calories | 30 kcal | 2,809,174 kcal |
| Protein | 0.6 g | 57,120 g |
| Total fat | 0.1 g | 14,046 g |
| Carbohydrates | 7.5 g | 706,975 g |
| Fiber | 0.4 g | 37,456 g |
| Sugar | 6.2 g | 580,563 g |
Key micronutrients
Uncertainty: Per-acre values are estimates that compound the yield range, edible-fraction assumption, and a single representative nutrient panel. Treat them as order-of-magnitude planning numbers, not nutritional advice. Confidence: high.
Ecosystem Services
Pollinator support
- Abundant floral forage for managed and wild beeshigh
Watermelon produces large numbers of nectar- and pollen-rich flowers over an extended bloom and is strongly dependent on bee pollination; the same flowers provide substantial forage for managed honey bees and a diversity of wild bees.
Applies when: during bloom, when fields are not sprayed with insecticides during floweringEvidence: Peer-reviewed·Confidence: high
Climate adaptation
- Heat- and drought-tolerant diversification cropmoderate
As a deep-rooted, warm-season crop, watermelon is well suited to hot climates and can diversify cropping systems where cool-season crops struggle, spreading weather and market risk across the season.
Applies when: in hot, sunny climates with access to drip irrigationEvidence: Extension guidance·Confidence: medium
Cultural / aesthetic
- Direct-market and agritourism valuemoderate
Watermelon is a culturally iconic summer crop with strong direct-market, roadside-stand, and agritourism appeal, supporting farm identity and local food connection beyond its commodity value.
Applies when: for farms with roadside, u-pick, or local-market channelsEvidence: Industry consensus·Confidence: medium
Biodiversity
- Pollinator and natural-enemy diversity at bloomlow
Extended watermelon bloom and adjacent unsprayed habitat support a range of pollinators and natural enemies, contributing to on-farm insect diversity during the summer.
Applies when: when flowering and surrounding habitat or margins are retainedEvidence: Extension guidance·Confidence: medium
Soil health
- Seasonal ground cover from sprawling vine canopylow
The dense sprawling vine canopy shades the soil surface during the season, moderating soil temperature and reducing surface exposure between rows; however, plastic-mulch culture leaves bare row middles and returns relatively little residue.
Applies when: during peak canopy; partly offset by bare row middles in plastic-mulch cultureEvidence: Extension guidance·Confidence: medium
Nearby Buyers
Data Sources
Every data point on this page is traceable to its source. Below you'll find the complete provenance trail — which sources were used, when data was last verified, and a full change history.
Primary sources: Production, yield, price, and market structure from USDA Agricultural Marketing Resource Center (AgMRC) Watermelon commodity profile (revised April 2024) — https://www.agmrc.org/commodities-products/fruits/watermelon — drawing on USDA ERS and the USDA National Watermelon Report. Agronomy, pollination, maturity, and post-harvest handling cross-referenced with UC Vegetable Research & Information Center 'Watermelon Production in California' and general cucurbit production guidance from land-grant extension services.
Economics data year: 2026 · Region: lake_erie View economics source →
13 tracked changes across 10 data categories