Square Foot Gardening (2024)

Make the most of your time and space with a smarter way to plant your garden: square foot gardening

Text and photos by Donna and Tom Krischan

Square Foot Gardening (1)

What do you get when you combine the analytical brain of an engineer, the organizational tactics of an efficiency expert and the passion of a vegetable gardener? A little something called square-foot gardening, that’s what! A cutting-edge way to plan and plant, it makes the most of your space and cuts down on work. Sounds like a busy gardener’s dream. Developed by Mel Bartholomew after years of work in community gardens, the method is simple and versatile, making it the perfect choice for beginners and experts alike.

Square-Foot Gardening 101

In its most basic form, a square-foot garden is a 4-foot-by-4-foot raised bed garden divided into 16 squares, with each square measuring 12 by 12 inches. You plant a specific crop within each of the 12-inch squares, rather than in rows.

Small-growing crops, such as lettuce or peppers, occupy a single square or two, while larger crops, like tomatoes and corn, can take up multiple squares. Trellises at the end of a bed support vining crops.

Beds can be made any length, but should be kept to no more than 4 feet wide. This allows easier access to the garden. Most people can reach halfway across the bed from either side for easy planting, weeding and harvesting.

If you plan to use multiple beds, it’s a good idea to make sure you leave paths between each so you can have access from either side. These paths, and the limited width of each bed, make it unnecessary to step into the beds-thus avoiding two dreaded words no gardener worth his or her green thumb wants to hear: soil compaction.

Let’s Begin With the Basics

Planning is a very important part of this system. A well-executed plan can result in a beautiful and productive garden that minimizes time spent on maintenance. Here are a few basics to keep in mind before you break ground.

Location

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If you’re just getting started, place your garden where it’ll get at least eight hours of sunlight. If it receives more than eight hours, even better.

Size

Decide how big you want your garden to be. At this point, a little reality check is beneficial. Are you growing just for your own consumption or are you planning on doing some freezing or canning? If you don’t know just yet, start with no more than one 4-foot-by-4-foot bed for each family member.

Construction

Build your own raised beds or buy a kit and assemble it. Raised beds put to rest any pre-existing soil issues because it’s a cinch to just fill them with a well-draining, premixed growing medium. In addition, raised beds require less bending when weeding or harvesting. The height can vary depending on the crops you plant. It can be as low as 3 inches for a salad garden, although a height of 8 to 12 inches is most common.

For material, naturally long-lasting woods, such as cedar or redwood, are fine choices. Other options include plastic lumber, vinyl and pressure-treated wood. The last bit of construction is to create the grid that divides the beds into 12-inch squares.

Crops

Here comes the fun part: deciding which vegetables you’d like to grow! First, create a map that details what crop, including how many plants or seeds, you plan to put in each square. Next, devise a planting timeline based on your area’s average last spring and first fall frost dates. If planting seeds, take into account the “days to maturity” date on back of the seed packet.

Spacing

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To determine how much room your plants need, consider the recommended space between each plant after thinning. You may even want to consider interplanting, which means incorporating fast-growing vegetables (such as radishes and leaf lettuces) among slow-growing varieties, which don’t need all of their allocated space right away. But by the time they do need the space, the quick-growing crop will be harvested and out of the way, providing more elbow room for the remaining plants.

Planting

Here’s a key item to remember: Sow seeds one at a time. The extra effort in single-sowing even the tiniest seeds pays big dividends later because there’s no need to thin seedlings.

Care and maintenance

Compared to traditional methods, square-foot gardening uses a smaller area. This results in less area for weeds to grow and more efficient watering. Use soaker hoses, or hand water with a wand. Ideally, walk by your garden each day to pull any weeds and keep an eye out for pests. If that’s not possible, be sure to spend time at least once a week in the garden.

Harvesting and Replanting

Harvest crops as needed or when mature. Once a square is empty, use hand tools to work in a little compost or a pinch of fertilizer before replanting the same crop or trying a new one altogether.

This article originally appeared on our sister site birdsandblooms.com.

Square Foot Gardening (2024)

FAQs

Does square foot gardening actually work? ›

The Bottom Line. Square foot gardening is a solid gardening method for any home gardener, especially beginners and people who are short on space. The drawbacks (while real) all have fairly simple solutions. Of course, it's all about your individual needs and preferences, but if it interests you, we say give it a whirl!

How much can you plant in a square foot garden? ›

Plant Your Favorite Veggies

If you're building more than one raised square-foot garden bed, leave enough space between them to roll a wheelbarrow. The formula for planting is simple: one extra-large plant per 1x1-foot square; four large plants per square; nine medium plants per square; and 16 small plants per square.

How do you calculate square footage for gardening? ›

Multiply the length by the width to determine the square footage—or area—of a square or rectangle. Find the square footage by multiplying the length and width of the area in question.

How many square feet of garden do I need to be self sufficient? ›

The general rule of thumb when it comes to growing a garden is to have 100 square feet of gardening space (traditional row gardens) per person for fresh eating only. To preserve food and put it up for the non-growing season, you're looking at 200 square feet of gardening space per person.

How much does a square-foot garden yield? ›

With good soil and close planting, you might estimate a conservative yield of about 1 pound per square foot. So in a 400-square-foot garden — just 20 by 20 feet — you can grow enough veggies for yourself.

What is the square foot method? ›

Square Foot Method – In appraisal, a method of estimating the replacement cost of a structure; it involves multiplying the cost per square foot of a recently built comparable structure by the number of square feet in the subject structure.

Is there an app for square foot gardening layout? ›

Garden Planner for Vegetables, Herbs, and Flowers

Whether you want to create a square-foot garden for vegetables, a kitchen garden for herbs, or a beautiful flower garden, our Garden Planner will help you find the best layout for your space- plus provide all your planting and harvesting dates!

How many tomatoes can you plant in a square foot? ›

SFG recommends planting one indeterminate tomato per square in the grid. We're assuming you're attaching your trellis to the north end of your raised bed and that the tomato is planted in those adjacent squares.

Can you do square foot gardening without raised beds? ›

Certainly you can apply the principals of square foot gardening without doing a raised bed . The raised beds do serve a function and help produce better vegetables. With a raised bed you build your bed on top of your existing topsoil and add more soil to fill in your raised bed.

How big is 100 square feet garden? ›

A good size to start with is 20 feet (6.1 m) long by 5 feet (1.5 m) wide for a total of 100 square feet (9.3 square metres). You can reach the center of the bed from both sides for weeding, fertilizing and harvesting. And with 100 square feet, it's easier to calculate how much of each soil amendment to use.

How many square feet of garden do I need for a family of 4? ›

Generally speaking, 200 square feet of garden space per person will allow for a harvest that feeds everyone year-round. For an average family of four, plan for an 800 square-foot garden—a plot that's 20 feet by 40 feet in size should do the trick.

How many cucumbers can you plant in a square foot? ›

You can comfortably grow two cucumber plants, spaced 6 inches apart, within a square foot. You may think that's not much, but take into consideration that cucumber plants are vigorous vines that can produce approximately five pounds of fruit per plant.

What is a good layout for a vegetable garden? ›

As a general rule, put tall veggies toward the back of the bed, mid-sized ones in the middle, and smaller plants in the front or as a border. Consider adding pollinator plants to attract beneficial insects that can not only help you get a better harvest, but will also prey on garden pests.

How big of a garden do I need to support 2 people? ›

You generally get more yield in a small space if you plant an herb, fruit, or vegetable garden in wide rows. In “How To Grow More Vegetables”, intensive gardening guru, John Jeavons, says you'll need about 200 sq. ft. per person to grow enough vegetables and soft fruits for the growing season at intermediate yields.

How big do I need my garden? ›

A general guideline for a summer vegetable garden is to plan on about 100 square feet per person. Advanced: If you're more ambitious and want year-round groceries, plan on about 200 square feet per person. Freeze or can at least half of the harvest for winter use.

Do you need to rotate crops in square foot gardening? ›

It is a well known fact that you should never grow the same crop in the same botanical family in the same soil year after year. This is especially true of cole crops(cabbage, broccoli and others) and the nightshade family (tomatoes, potatoes etc.). For best results, you should always rotate all your plants.

Do you have to use raised beds for square foot gardening? ›

Square foot gardening uses small, raised beds instead of crop rows in the ground. The beds can be made of untreated cedar, pine or fir. You want your raised beds to be no larger than 4×8 feet.

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