A 5-ounce clamshell of organic spring mix costs $6.99. That’s $22.37 per pound for leaves that were cut 10 to 14 days ago, kept cold the entire time, and are already a quarter of the way to the trash bin. Lettuce seed costs $2.49 a packet, plants a 4x4 bed, and the first cut comes in 30 to 35 days from seeding. The second cut comes 2 to 3 weeks after that. Then the third.
This is the category where home gardening most obviously wins on pure economics. The inputs are cheap, the regrowth is fast, and the retail price of packaged salad is high enough that you don’t need many cuts to justify the seed spend several times over. The math is not subtle.
The Retail Benchmark
Before calculating what you save, you need the number you’re saving against.
Conventional pre-washed salad mix - Dole, Fresh Express, the commodity product - runs $3.99 to $4.99 for 5 ounces at major grocery chains (USDA AMS Specialty Crop Market News, 2024). That’s $12.77 to $15.97 per pound. Organic spring mix from Earthbound Farm or O Organics runs $5.99 to $8.99 for the same 5-ounce format. That’s $19.17 to $28.77 per pound.
To put that in context: grass-fed ground beef, the thing people point to as expensive, typically runs $6 to $9 per pound. Bagged organic salad mix costs more than ground beef. Per pound, it costs more than most pork chops, most canned fish, and most dried legumes. It is one of the most expensive food categories by weight that normal households buy on a routine basis.
The home-grown comparison target is $12.77 to $28.77 per pound, depending on whether you’re buying conventional or organic. As you’ll see in the yield model below, homegrown leaf lettuce at even the most conservative yield estimates comes in well below the floor of that range.
What a Household Actually Spends
Estimating household salad spend requires a set of assumptions, so here they are stated explicitly: a 2-person household eating salad 4 times per week, one 5-ounce bag per serving, two servings per meal. That’s 2 servings x 4 nights = 8 servings per week, each drawing from one bag. At the common buy pattern of one bag per 2-person serving, you’re going through roughly 2 to 2.5 bags per week.
At $4.99 per bag (mid-range conventional): $4.99 x 2.25 bags/week x 52 weeks = $583/year.
At $6.99 per bag (entry organic): $6.99 x 2.25 x 52 = $818/year.
At $8.99 per bag (premium organic): $8.99 x 2.25 x 52 = $1,052/year.
The household that replaces $818 per year in bagged organic salad with homegrown greens is the median scenario. That is the comparison number. It’s the upper bound value of a well-run salad garden, and it’s a realistic one for anyone cooking at home most nights.
The Crops
Salad mix in a commercial clamshell is a blend - typically four to eight varieties of cut lettuce, arugula, spinach, and whatever specialty greens the packer has priced into the mix that week. At home, you grow the same core crops. Each one has its own yield profile and retail equivalent.
Leaf lettuce (Lactuca sativa var. crispa)
Leaf lettuce is the backbone of homegrown salad mix. Days to first cut: 30 to 45 from seeding. A packet of 250-plus seeds costs $1.99 to $2.99 (Johnny’s Selected Seeds, 2024). At 0.5 to 1 pound per square foot per cutting, with 4 to 6 cuts before the plant bolts or quality declines, you’re looking at 2 to 6 pounds of greens per square foot per growing season from one planting.
The retail equivalent matters here. Loose-leaf lettuce at grocery stores runs $1.50 to $3 per pound. But you’re not replacing loose-leaf lettuce - you’re replacing what goes into that clamshell, which is sold as mix at $12 to $20 per pound equivalent. The crops are the same. The packaging and prep are what you’re eliminating.
Varieties with the best cut-and-come-again performance: Salanova types (the French loose-leaf bred specifically for repeated harvest), Black Seeded Simpson, Red Sails, and Oak Leaf types. Salanova in particular is designed for the repeated-cut model - the tightly packed heads produce individual leaves rather than a central head, and each cut triggers dense regrowth (Johnny’s Selected Seeds, Salanova Lettuce Trial Guide, 2023). For a home salad mix bed, Salanova outperforms conventional loose-leaf varieties by a meaningful margin on cut count and regrowth speed.
One thing to be direct about on heat: leaf lettuce bolts in sustained temperatures above 80°F. Bolting happens fast. One week the lettuce looks fine, the next week the center stalk elongates and the flavor turns immediately bitter - a sharp, unpleasant edge that doesn’t cook out and doesn’t improve with dressing. Spring and fall are your productive windows. Summer requires shade cloth (30-40% shade reduces canopy temperature by 5 to 8°F) or varieties bred for heat tolerance like Nevada or Jericho, though both are stopgap measures, not solutions.
Arugula (Eruca vesicaria subsp. sativa)
Arugula is the fastest-growing green in a salad mix bed and the most reliably self-sufficient. Days to first cut: 30 to 40. Same packet cost range as lettuce. Yield: 0.5 to 1 pound per square foot per cutting, with 4 to 6 cuts per planting.
The retail price point for arugula is higher than lettuce. Loose arugula at grocery stores runs $4 to $8 per pound; at farmers markets, $6 to $12 per pound is common (USDA AMS Specialty Crop Market News, 2024). Arugula is not a commodity crop at the retail level. It has premium positioning, which benefits the home-grown calculation.
Arugula self-seeds freely. A plant you allow to flower and set seed will produce volunteer seedlings the following season, often in unexpected locations near the original planting. This is worth knowing before your first season: if you want to control where it grows, pull the flowering stalks before seed set. If you want free next-year plants, leave a few stalks. Most growers find arugula is effectively perennial on their plot once established, with volunteers filling gaps without replanting.
Spinach (Spinacia oleracea)
Spinach takes a bit longer - 40 to 50 days to harvest size - and has a shorter productive window than lettuce or arugula. It gives 3 to 4 cuts rather than 4 to 6, and bolts faster in heat. Retail price: $2 to $4 per pound for loose spinach, $5 to $9 per pound for baby spinach at specialty stores (USDA AMS Specialty Crop Market News, 2024).
Where spinach compensates is in the fall. Spinach planted in late August for zones 5 to 6 grows through October, tolerates light frost, and can overwinter under mulch to resume growth very early in spring - sometimes in March when nothing else is producing. Fall spinach is often more productive than spring spinach because it goes in when the weather is cooling rather than heating. It extends the salad season into months when the lettuce bed is done.
Mache (Valerianella locusta)
Mache - also called corn salad or lamb’s lettuce - is the least familiar of the four but has the most interesting retail position. Days to harvest: 45 to 70. Yield: 0.25 to 0.5 pound per square foot (the plant is small and low-growing). Packet cost: $2.49 to $3.49.
The retail price for mache runs $8 to $15 per pound where it’s available at all, which is primarily specialty grocers and farmers markets. It is rarely stocked in conventional grocery chains. If you’re buying it, you’re paying for it.
Mache is cold-hardy to a degree the other salad greens are not. It grows through light frosts and is the right crop for fall and winter production in zones 5 to 8. Plant densely in August or September, thin to 2-inch spacing if needed, and harvest when the rosettes reach 3 to 4 inches across. Almost no management required. It simply grows while other beds are idle.
Mache does not cut-and-come-again effectively - you harvest the whole rosette. But it fills the season gap that lettuce, arugula, and spinach all leave (the cold months), and it does so with near-zero input.
The Cut-and-Come-Again Yield Model
The reason salad greens beat most other home garden crops on ROI per square foot is the regrowth model. Head lettuce - the iceberg or romaine heads the grocery store sells for $1.29 each - is a one-and-done crop. Plant, grow, harvest once, replant. Leaf lettuce, arugula, and spinach work differently. Cut them 1 to 2 inches above the growing point, and they regrow. Multiple times.
The model works like this:
- Direct seed once ($2 to $3 in seed)
- First cut at 5 to 6 inches of growth: 0.5 to 0.75 lb per square foot
- 14 to 21 days of regrowth to cutting height
- Second cut - same yield
- Third, fourth, fifth cuts before the plants bolt, exhaust, or decline
A 4x4-foot bed (16 square feet) seeded with a blend of leaf lettuce, arugula, and spinach:
5 cuts x 0.6 lb/sq ft average x 16 sq ft = 48 pounds of salad greens over the growing season.
At a blended retail equivalent of $5/lb (splitting the difference between conventional loose-leaf and mixed organic spring mix pricing), that’s $240 in grocery value from 16 square feet. Seed cost for a spring planting plus fall replanting: $8 to $12. Net: roughly $228 to $232 from one small bed per season.
The $5/lb blended average is conservative. If you’re replacing organic spring mix at $22/lb, the same 48 pounds at organic pricing represents $1,056 in grocery value from one 4x4 bed. That number is technically accurate and practically misleading, because it assumes you’d actually buy 48 pounds of organic spring mix a year, which few households do. The $5/lb blended figure is more honest as a comparison.
The Crop-by-Crop Numbers
Here is the yield and value summary by crop. Retail prices from USDA AMS Specialty Crop Market News (2024). Yield data from Cornell Cooperative Extension, Lettuce, Endive, Escarole, and Other Greens Production for Small Farms (2019), and Johnny’s Selected Seeds commercial growing guides (2024).
| Crop | Days to 1st cut | Cuts/season | Yield lb/sq ft (total) | Retail $/lb | Gross $/sq ft | Seed cost/packet |
|---|---|---|---|---|---|---|
| Leaf lettuce | 35-45 | 4-6 | 2-3 | $12-20 mix equiv | $24-60 | $2.49 |
| Arugula | 30-40 | 4-6 | 2-3 | $6-10 | $12-30 | $2.49 |
| Spinach | 45-50 | 3-4 | 1.5-2 | $4-8 | $6-16 | $2.49 |
| Mache | 55-70 | 2-3 | 0.5-1 | $10-15 | $5-15 | $2.99 |
Gross dollar per square foot figures use mid-range retail prices and mid-range yield estimates. Your actual numbers depend on how consistently you harvest, whether you lose plants to bolting, and what you price the crop against (loose-leaf vs. spring mix pricing). The range is wide because those variables are real.
The column that matters most for planning is cuts per season combined with days to first cut. Arugula wins on speed. Leaf lettuce wins on total season yield when managed well. Spinach is the fall and early spring workhorse. Mache is the gap filler.
A Succession Plan for Near-Year-Round Production
Growing a single bed of salad mix and harvesting it until July, then being done, leaves most of the value on the table. The productive model for zones 5 to 6 uses two main plantings:
Spring planting (March through April): Direct sow cold-tolerant lettuce varieties, spinach, and arugula as soon as the soil is workable and nighttime temperatures stay consistently above 25°F. Light frost is not a problem for any of these crops at seedling stage. First cuts in mid-May.
Peak production (May through mid-June): This is the high-output window. Temperatures are right for all four crops, regrowth is fast, quality is high. If you’re going to track your harvest weights, this is when the data gets interesting.
Summer transition (mid-June through mid-August): Heat arrives, lettuce bolts, productive season ends for the spring planting. Options: shade cloth over an existing bed to extend by 2 to 3 weeks, transition to heat-tolerant crops (basil, chard, heat-tolerant varieties of lettuce), or simply let the bed go until fall temperatures return. There’s no dishonor in an empty salad bed in July.
Fall replanting (August 15 through September): This is the planting most home growers miss entirely. Spinach, arugula, mache, and cold-tolerant lettuce go back in. Days to harvest shrink because late summer warmth accelerates germination and early growth before cooling temps slow things down. First fall cuts in late September or October.
Fall production and cold-season extension (September through November and beyond): Arugula and spinach cut through October. Mache continues through light frosts without any protection. A row cover or low tunnel extends spinach into November in zone 6 and December in zone 7. Mache with row cover has been documented producing into January in zone 6 (Cornell Cooperative Extension, vegetable growing guides).
End result: roughly 8 to 9 months of salad production from two plantings per year. The only months with no production in zones 5 to 6 are the depths of winter - December through February without cold-season infrastructure.
The Mesclun Seeding Approach
Rather than planting lettuce in one row, arugula in another, and spinach in a third, scatter-sow a blended mesclun mix across the entire bed. One packet of a commercial mesclun blend - typically a pre-mixed combination of 6 to 10 lettuce varieties plus arugula and sometimes chicories - costs $2.99 to $4.99 and plants a full 4x4 bed.
What you get from a scatter-sown mesclun bed is a mixed harvest at every cutting that closely approximates what’s in a commercial spring mix clamshell. The visual variety is there - red and green leaves, different textures - and you’re harvesting a blend rather than managing separate crops.
The tradeoff: you can’t harvest crops selectively as one bolts faster than another. Arugula bolts before most lettuces in heat; in a mixed bed, you either harvest everything early or accept some bitter arugula in the cut. For most households, this is not a meaningful problem. Harvest more frequently - every 12 to 14 days rather than 16 to 21 - and you stay ahead of bolt timing across the mix.
For variety selection within a mesclun planting, Johnny’s Selected Seeds publishes a salad mix growing guide with specific blend recommendations by season (spring, summer-tolerant, fall) and cut-and-come-again performance ratings by variety (Johnny’s Selected Seeds, 2024). Their Salanova series is specifically bred for the repeated-cut model and outperforms standard open-pollinated lettuce varieties on regrowth rate and cut count.
Break-Even Calculation
The break-even on a salad green bed is measured in days, not seasons.
Inputs for a 4x4 bed, first season:
- Seed (mesclun blend or individual packets): $5 to $8
- Soil amendments (compost, balanced fertilizer if needed): $10 to $20 for an existing bed; higher for new soil
- Water: minimal - salad greens are shallow-rooted and use less water than fruiting crops
- Total first-season input: $15 to $28
First cut from a 4x4 bed: 0.6 lb/sq ft x 16 sq ft x $5/lb blended value = $48 in grocery value. One cutting pays for the bed.
Break-even point: first harvest. Every subsequent cut is net positive.
This is the cleanest break-even math in vegetable gardening. The only crop that competes on this metric is herbs, particularly basil, where retail pricing is similarly high and plants are similarly fast. See the herb ROI comparison for that side-by-side.
For the second-season calculation, your costs drop to seed only ($5 to $8) because the bed is established. If you amend with compost from your own pile, second-year inputs approach zero.
What You Cannot Fully Replace
The honest version of this analysis includes what doesn’t pencil out perfectly.
Pre-washed, pre-dried, pre-bagged salad is convenient in a way that homegrown is not. When you pick up a $6.99 bag of spring mix, it’s ready to eat in 30 seconds. Homegrown salad requires harvesting (5 to 10 minutes, twice a week during peak season), washing, spinning, and storing in the refrigerator in a container with a paper towel. That’s 10 to 15 minutes twice a week, or roughly 90 to 130 minutes per month during the productive season.
Whether that time has value depends on your situation. If you’re already in the garden pulling weeds or watering, the harvest adds almost nothing to the visit. If the garden is a separate activity from everything else, the time cost is real and should be counted.
The second thing you can’t fully replace: specific items in specialty mixes. Commercial spring mix often includes tatsoi, mizuna, radicchio, and chrysanthemum greens alongside the core lettuce and arugula. These are growable at home - tatsoi in particular is easy and cold-hardy, mizuna germinates fast and cuts cleanly, and chrysanthemum greens add a distinctive flavor popular in Asian cuisines. Sorrel is another cut-and-come-again perennial green worth adding once you’re ready to expand beyond the basics - it provides a lemony tartness that no other salad green replicates. A simple 4-crop bed of lettuce, arugula, spinach, and mache covers 80 to 90% of what’s in a commercial mix. Getting to 100% requires going deeper into specialty green production.
Comparing to Other High-Value Garden Crops
Salad greens are not the highest-value crop per square foot in every garden. See vegetable value per square foot for the full comparison. But they are the highest-value crop in most gardens for several specific reasons:
The seed-to-harvest time is short (30 to 45 days vs. 70 to 90 days for tomatoes). The retail equivalent price is high ($12 to $28/lb for the mix equivalent). The cut-and-come-again model gives you multiple harvests from one planting. And the crop is one you actually buy regularly at a price point that makes the comparison visible every week.
For planning when and where to plant salad greens in a full-season rotation, see the succession planting calendar. Salad greens fit into bed transitions between winter cover crops and summer fruiting crops in a way that fills calendar gaps rather than competing for prime summer bed space.
Tracking the Numbers
The yield model here uses mid-range estimates from Cornell Cooperative Extension (2019) and USDA AMS pricing data (2024). Your actual numbers will vary based on bed size, seed variety selection, how consistently you harvest, and your local retail prices. The Garden ROI app lets you log actual harvest weights and compares them against current grocery prices in your area. After one full season of tracking, you’ll have real data rather than estimated ranges.
The most common finding from growers who actually weigh their harvests: the first-season yield falls at the low end of the range because germination is uneven, some plants are lost to heat or pests, and the harvest cadence takes a few weeks to get right. By the second season, once you know your bed’s actual performance, yield estimates become much more predictable - and the numbers almost always beat the conservative projections.
Salad greens are where the ROI case for home gardening is simplest and most defensible. The retail price is high, the inputs are cheap, the break-even comes fast, and the season can be stretched to cover most of the year. The math is not close.