Methodology & Data Guide

Find the Best Vegetables and Herbs to Grow for Savings

How to read our crop data

We measure every crop using realistic retail prices, actual square-foot yields, and true starter supply costs so you can pinpoint where your garden saves money.

Initial spend

Startup cost

The minimum upfront cash required for seeds, potting mix, and basic containers.

Store baseline

Grocery store price

The average supermarket retail price you pay for conventional or organic produce.

Timeline

Days to harvest

The total growing time from sowing seeds (or transplanting seedlings) to first pick.

Footprint

Space requirement

The actual square footage or pot volume needed for healthy root and leaf growth.

Effort rating

Growing difficulty

How forgiving the crop is regarding pest pressure, watering routines, and soil quality.

Gross yield

Estimated harvest value

The total dollar value of the food you collect over one full growing season.

Your profit

Estimated net savings

The net money left in your wallet after subtracting seed and soil startup costs.

Overall ROI

GrowVsBuyMore score

Our 1-100 composite rating ranking return on investment, speed, and ease.

Estimated net savings
Metric Definition & Formula
Active Metric

What this metric tells you

The net money left in your wallet after subtracting seed and soil startup costs.

Calculation logic

Total harvest value minus all upfront seed, soil, and nutrient expenditures.

Sample calculation preview

$48 harvest value minus $9.50 input cost
+$38.50 net
Rule of thumb: Crops with a GrowVsBuyMore score above 80 typically pay for all seed and soil costs within their first single harvest window.
Crop comparison database

Compare crops by cost, space, and real harvest value

Filter by growing space, startup budget, or harvest timeline to find what actually cuts your grocery bill. For small-space strategies, explore our apartment container gardening guide, calculate proven returns with our grocery savings breakdown, or run custom estimations with our interactive calculators.

Showing 9 of 9 crops
Everbearing Strawberries
FruitsTier $50
Save $62/season
Everbearing Strawberries
Best in: Hanging planters & pots
Startup

$18

Store Value

$80

Net Gain

+$62

1.0 sq ft
75 days
6+ hrs sun
Moderate
Cherry Tomatoes
VegetablesTier $50
Save $58/season
Cherry Tomatoes
Best in: 5-gallon grow bags
Startup

$14

Store Value

$72

Net Gain

+$58

1.5 sq ft
60 days
8+ hrs sun
Easy
Cut & Come Salad Greens
GreensTier $25
Save $58/season
Cut & Come Salad Greens
Best in: Shallow window boxes
Startup

$6

Store Value

$64

Net Gain

+$58

1.0 sq ft
21 days
4-6 hrs partial
Very Easy
Lacinato Dinosaur Kale
GreensTier $25
Save $53/season
Lacinato Dinosaur Kale
Best in: Fall & spring continuous yield
Startup

$5

Store Value

$58

Net Gain

+$53

1.0 sq ft
45 days
4+ hrs sun
Easy
Tuscan Blue Rosemary
HerbsTier $25
Save $48/season
Tuscan Blue Rosemary
Best in: Perennial terracotta pot
Startup

$8

Store Value

$56

Net Gain

+$48

1.0 sq ft
30 days
6+ hrs sun
Easy
Genovese Basil
HerbsTier $25
Save $44/season
Genovese Basil
Best in: Windowsills & containers
Startup

$4

Store Value

$48

Net Gain

+$44

0.5 sq ft
28 days
6+ hrs sun
Easy
Sweet Bell Peppers
VegetablesTier $50
Save $40/season
Sweet Bell Peppers
Best in: Warm sunny balconies
Startup

$12

Store Value

$52

Net Gain

+$40

1.5 sq ft
70 days
8+ hrs sun
Moderate
Provider Bush Beans
VegetablesTier $50
Save $32/season
Provider Bush Beans
Best in: Direct seed container tubs
Startup

$6

Store Value

$38

Net Gain

+$32

1.0 sq ft
50 days
6+ hrs sun
Easy
French Breakfast Radish
VegetablesTier $25
Save $21/season
French Breakfast Radish
Best in: Fast companion planting
Startup

$3

Store Value

$24

Net Gain

+$21

0.5 sq ft
24 days
4-6 hrs sun
Very Easy

Want custom calculations for your exact space?

Use our interactive garden budget calculator to plan costs down to the container, or explore our container gardening guides and grocery savings benchmarks.

Open garden calculator
Crop database breakdown

Browse by category

Compare upfront costs, square-foot footprint, and real grocery savings before spending a dollar on seeds. You can also consult our Growing Guide by Region, maximize your harvest returns with Grocery Savings & Growing for Less, or build low-cost container setups using DIY Garden Projects.

Potted basil, rosemary, and thyme on a sunny kitchen windowsill
Fastest ROI
Culinary herbs
Highest grocery price markups per ounce. Grow on windowsills with minimal startup costs and daily harvests.
Value gainSave $12–$25 / month
Space needed1–2 sq ft or windowsill
First yield14–30 days to first cut
Fresh salad greens and cherry tomatoes growing in container planters
Highest volume
High-yield vegetables
Cut weekly produce bills with continuous-harvest leafy greens, cherry tomatoes, and sweet peppers in small spaces.
Value gainSave $35–$80 / month
Space needed4–12 sq ft / grow bags
First yield35–65 days to harvest
Potted strawberry and raspberry plants with ripe red fruit
Long-term savings
Berries & compact fruits
Perennial investments that deliver seasonal grocery savings year after year in pots and patio planters.
Value gainSave $20–$50 / month
Space needed5-gallon pots or raised beds
First yield60–90 days (perennial)