Will a garden actually save me money on food?

Five pages, and they agree on the shape of the answer before they agree on anything else: mostly no, with a short list of exceptions that fits on a windowsill. The people behind them garden, keep hens and catch water, and they did the sums after the fact. What follows is their ledger, not a sales pitch.

The honest ledger. Grow the herbs, not the potatoes is built from thirty conversations and 415 accounts pricing a bag of compost against a grocery bill, and the answer they mostly give is no. Four separate conversations say the soil, pots, seed and tools mean a new garden does not break even for several years, and that it is a hobby or a way of life before it is a budget line. In the two widest exchanges, the accounts saying a garden costs more than the shop outnumber the others five to one and four to one. The cautions say why, one each: everything depends on already having fertile soil and supplies, and bought fresh they are the cost; bagged soil is poorer than it looks and wants fertiliser; pests, squirrels, voles, caterpillars and vine borers, can take a crop before it yields a penny; weather does the same; a beginner picks finicky plants and loses them; and the shop drops its prices exactly when your tomatoes ripen, because everyone else’s did too. One caution says to write off the first two seasons as tuition. Three conversations add the thing they would not trade, which is that the tomatoes and greens taste better than anything the supermarket sells, and two accounts each say gardening is relaxing and calming even when it saves nothing, which is not a saving but is not nothing.

What does pay. The same page names the exception, and it is the widest agreement in those conversations: five separate conversations say herbs are one of the few things a garden reliably saves money on, because fresh herbs are dear at the shop for the little you get and cost almost nothing to grow. Single accounts say rosemary, thyme, oregano and sage are nearly unkillable and turn into shrubs, that basil roots from a cutting in a glass of water, and that spring onions regrow in a pot. Then the dear things: single accounts name berries, cherry tomatoes, cucumbers and salad leaves as the crops worth space because of what the shop charges. Four separate conversations say perennials are the long game, asparagus, berry canes and fruit trees, because they cost once and produce for years, with the caution that trees take years before a real crop. Two accounts put a number on it, which that page carries as theirs: herbs and hydroponic greens saved them six to nine US dollars a week. That is the honest scale of a windowsill.

What does not. Potatoes, and the page argues it properly. Four separate conversations say that for cheap staples, potatoes, onions, carrots and basic vegetables, the soil, the containers and the labour cost more than the shop charges, and three say the potting soil alone, bought by the bag, outruns the saving. Two exchanges, three accounts to three and four to three, are the potato argument: one side says potatoes are easy, filling, fun and worth the space for the satisfaction of digging them; the other says they are the worst possible choice for a frugal gardener, because their market value is lowest and their input cost is not. The accounts’ own decider is your goal. If it is strictly money, the second side wins. If it is the hobby and the hour of calm, grow the potatoes and enjoy them. Two safety lines that page checked and carries: a potato gone green in the light has made a toxin in its skin, so cut the green away, throw out a heavily green tuber and store them dark; and seed for sprouting or microgreens must be sold untreated and meant for eating, not planting.

The smallest version that works. Green onions: pay once, regrow for months is two people in separate conversations, months apart, describing the same ritual: cut the bunch low, stand the white root ends in a glass of water on the windowsill, and change the water every couple of days. Roots show within about three days. That page is honest that it is not the money, since a bunch costs a dollar; it is that the trick works visibly and fast. The one rule both people converged on is the water: change it before it goes cloudy, or you get a glass of swamp instead of a tiny crop.

Hens are a different sum, and it also comes out behind. The eggs are the bonus, not the saving is thirty conversations and 353 accounts who priced chicks because eggs got dear. Six separate conversations say the feed, the equipment and the care cost more than the eggs are worth, and three more say the first eggs cost far more than shop eggs because the coop, the chick heating and the starter feed come first. One account puts the first egg at over a thousand US dollars, another at hundreds. The other side is real and has conditions: three conversations say four years of a laying hen is cost-effective if the feed cost stays manageable and the bird is used for the pot at the end, and two say acreage and free-ranging on scraps bring the cost right down. The accounts’ own decider is how much land you have and whether you can feed them from scraps and forage rather than bought feed. The costs people forget, that page says, are predators, labour and winter, in that order of heartbreak. If the honest answer is that you wanted cheaper eggs, the people there say buy them from a local farm, which two conversations say is cheaper than the shop and keeps longer unwashed.

Where the saving actually is. A garden costs nothing to start takes the four numbers people price, seeds, soil, a container and water, and says each has a free source: seed libraries and swaps, soil built from leaf litter, grass clippings, cardboard and kitchen scraps layered on the ground, planters from moving sales, estate sales, thrift shops, reclaimed wood and household things never meant to grow anything, and a rain barrel that is itself often free. That page keeps the argument alive too. One side says a garden run this way costs almost nothing and takes real money off a grocery bill; the other says that once you count soil, water, materials and the hours, the savings are small enough not to be the reason to do it. Both are said by people who garden, and the page does not resolve it. What it does say is that the cost of finding out was the thing that was never real. The water, though, is not a money story either: Catch the cold water while the shower warms up reports that several accounts across separate conversations did the arithmetic on their own bills and found the bucket saved them a few dollars a month at best, because in many places most of a water bill is fixed charges, sewer fees and taxes. What it does catch is clean, unsoaped water that the gardeners there reach for first.

So the answer, from the pages: a windowsill of herbs will pay for itself, and a glass of green onions will pay you back in a way the page says was never really about money; a bed of potatoes and a coop of hens will not pay, and the people who keep them know it and keep them anyway.

Who this is not for. The herbs page names two readers: if you hoped to feed yourself from a garden, two conversations say the land it takes is more than a town-dweller has; and if you have more than one job, or children, one contraindication says the hours are the cost. The free-start page adds a third: if you have no outdoor space, no windowsill that gets light and nowhere to leave a container undisturbed, free inputs solve a problem you do not have, and a community plot is the version of this for you.