Does your vegetable garden really save money? This calculator compares what you spend growing food with what the same produce would cost at the store. Enter your harvest weight, the store price per pound, and your costs for seeds, soil, water and equipment, and it shows your savings or net cost for the season along with your actual cost per pound. Because beds, tools and trellises last several years, the calculator spreads their cost over their useful life rather than charging it all to one season.
How to use the homegrown food savings calculator
- Weigh your harvest. Keep a simple log through the season and add up the pounds. A kitchen scale or the harvest log in a notebook is enough.
- Enter the store price per pound for the produce you grew, using what you would normally pay, for example organic if that is what you buy.
- Add your costs. Include seeds and plants, soil and compost, mulch, water and any other running costs.
- Add durable gear separately. Raised bed lumber, tools, cages and irrigation lines go in the tools and beds box, with the number of years you expect them to last.
- Read the result. You will see your estimated savings, your cost per pound and the store price for comparison.
How the calculation works
The store value is your harvest weight multiplied by the store price. Your seasonal cost is seeds, soil, water and running costs, plus the tools-and-beds cost divided by its useful life. Savings are the store value minus your cost. If the answer is negative, the calculator shows it as a net cost, which is common in a first year when you are buying beds and tools.
What the calculator leaves out
Money is only part of the picture. The calculator does not value your time, the exercise, the flavor or freshness of just-picked produce, or the fact that you can grow varieties that stores rarely sell. It also does not count food waste from a glut or the cost of preserving. Those are real factors, but they depend on you, so they are left for you to weigh.
Ways to improve your savings
- Grow what costs the most in stores and grows well locally, such as fresh herbs, salad greens, and ripe tomatoes.
- Cut start-up costs. Compost your own scraps, save and share seed where the packet allows, and build beds from low-cost materials. The vegetable garden cost calculator and the garden cost estimator help you budget.
- Space plants properly. Good spacing gives more food per square foot. Check the plant spacing calculator.
- Water efficiently. Mulch and drip lines cut water use. See the garden water budget planner.
- Keep a harvest log so next year you can grow more of what worked.
Limits of this tool
The result is only as good as the numbers you enter, and prices and yields vary by place and season. It is a simple budgeting aid, not financial advice. A garden that costs a little more than the store in year one often comes out ahead in later years as equipment costs fall away.
Frequently asked questions
Does a vegetable garden save money?
It can, especially for high-priced produce, herbs and crops you grow well. The first year often costs more because of start-up purchases, and later years usually cost less.
What costs should I include?
Seeds, plants, soil, compost, mulch, water, tools, beds, supports and any fertilizer. Add equipment separately so the cost is spread over its lifespan.
Which store price should I use?
The price you would actually pay for the same kind of produce, such as organic prices if you normally buy organic.
How do I track my harvest weight?
Weigh produce as you pick and write the total in a notebook or spreadsheet. A simple kitchen scale works well.
Why is my result negative?
You likely spent more than the harvest was worth this season, usually because of start-up costs. Spreading equipment over more years or growing more can change the result.