
Chard is a versatile and nutritious vegetable that's perfect for square foot gardening. It's a cool-season crop, which means it thrives in the cooler temperatures of spring or fall.
Chard can be harvested in as little as 50 days, making it a great choice for beginners who want to see quick results. It's also a hardy crop that can tolerate some frost.
To get started with chard square foot gardening, you'll need to prepare the soil by loosening it to a depth of 8-10 inches. This will give the roots of the chard plants room to grow.
Chard prefers well-draining soil with a pH between 6.0 and 7.0.
Growing Chard
Swiss chard plants love cool weather, so they're best planted in the early spring as soon as the soil is workable or late summer.
For optimal growth, water your Swiss chard daily during the hottest months, especially if you're growing in a container. I've found this to be crucial for keeping my plants healthy and thriving.
A little touch of frost will actually make your chard leaves taste sweeter, and they can survive light and moderate frosts thanks to their savoyed leaves. This is a game-changer for gardeners who live somewhere with mild winters.
Once your plants have 10 or so leaves, their roots are pretty established in the soil, so you can switch to watering every other day or every third day, depending on your climate. I've found this to be a great way to conserve water without sacrificing plant health.
You can switch to a less frequent watering schedule without adding extra fertilizer, as Swiss chard typically doesn't need additional fertilizer beyond some extra compost pushed around the base of each plant every couple of months. This process, called hilling, ensures your growing plants have all the nutrients they need.
Prune any leaves that have holes in them or that are turning yellow to maintain the health of the plant. This is a simple but effective way to keep your Swiss chard looking its best.
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Sowing Seeds
Start Swiss chard seeds indoors 90 days before your last frost date for a head start on the season.
You can also start seeds indoors in late summer if it's still hot outside, and then move them out in the fall once the temps have finally dropped to the 70s.
Most seed companies recommend direct sowing Swiss chard, but starting seeds indoors can be a good alternative, especially for slow-to-germinate varieties like Swiss chard.
Seed Appearance
Swiss chard seeds are pretty big for seeds, especially for leafy greens, which tend to have minuscule little specks for seeds.
You could fit like 10 lettuce seeds in each Swiss chard seed.
Seeds in the Amaranthaceae plant family, which includes Swiss chard, are often multigerm seeds. This means they're actually little clusters of several embryos, or future plants.
For every one Swiss chard seed you plant, you could potentially get a couple little seedlings popping up.
Starting Seeds Indoors
You can start Swiss chard seeds indoors as early as 90 days before your last frost date, or even in late summer for a fall harvest.
Starting seeds indoors requires some basic supplies, including seed starting trays, organic seed starting mix, and LED lights.
Swiss chard seeds are nice and big, making it easy to handle one seed at a time, which is a plus when planting them in seed starting trays.
Fill the tray with pre-moistened seed starting mix, place one seed per cell, and sprinkle a layer of soil mix over them.
Water the seeds from the bottom or use a spray bottle to keep the soil moist but not soaking until you see little sprouts appear.
Swiss chard seeds can be slow to germinate and take off, so starting them early gives you a jump on the season.
Keep the soil moist but not soaking until you see little sprouts appear, which usually takes about 14 days for Swiss chard seeds.
Once your Swiss chard seedlings have a couple sets of leaves, you can get them ready to be moved outdoors.
Harden your seedlings off by moving them outdoors to a nice, shaded spot for more and more time each day until they're ready to go to their new home.
You can start seeds indoors in late summer if it's still hot outside, and then move them out in the fall once the temps have finally dropped to the 70s.
When to Direct Sow
You can direct sow Swiss chard seeds in the garden as soon as the soil is workable in the spring. This is because they can thrive in temperatures between 50 and 75 degrees Fahrenheit.
Direct sowing is a great option because you can prevent frost damage to the leaves by using frost cloth or little garden cloches to protect your plants during freezes. This is especially useful if you live in an area with unpredictable weather.
Your plants will keep growing as long as the temperatures stay within this range, and you can continue to sow more seeds until temperatures rise above 85 or so. This is a great way to get a head start on the growing season.
In fact, you can keep sowing Swiss chard seeds until the late summer or early fall, when temperatures have dropped back below 85. This will give you a second crop of delicious leaves to enjoy.
Planting and Care
Swiss chard is a prolific plant that grows from early spring to your first heavy freeze, making it a great choice for a chard square foot garden.
Add a 2- to 3-inch layer of fresh compost to your garden before sowing Swiss chard seeds or planting transplants. This will give your plants a nutrient-rich start.
Keep your seeds well watered while you're waiting on them to germinate, and space them at least 8" apart for now.
To thin your plants, remove extra ones by snipping them at their base, and then bring them inside to enjoy as microgreens or baby greens once they have their first couple sets of leaves.
Preparation and Planting
To prepare your garden for Swiss chard, add a 2- to 3-inch layer of fresh compost before sowing seeds or planting transplants.
Direct seeding is the most common way to start chard, but you can also use transplants to get an earlier start on the season.
Make holes in the soil that are 1/2" deep to plant your seeds, and place only one seed per planting hole.
Space your seeds at least 8" apart for now, and keep your seeds well watered while waiting for them to germinate.
You'll need to thin your plants to one every 12" once they have their first couple sets of leaves, removing extra plants by snipping them at their base.
Intriguing read: Companion Planting Square Foot Gardening Chart
Care
Swiss chard's needs are similar to beets, so it's no surprise that they thrive in similar conditions. They perform well with little or no fertilizer, making them a great choice for gardeners who want to minimize their input.

To keep your Swiss chard healthy, make sure the soil is moist. Drought-stressed plants are more likely to produce a flower stalk and stop leaf production, so don't neglect to water them regularly.
Prune any leaves that have holes in them or are turning yellow to maintain the health of the plant. This simple step can make a big difference in the overall health and productivity of your Swiss chard.
You can also fertilize your Swiss chard with an organic fertilizer high in nitrogen, such as cottonseed meal, about once every 4 to 6 weeks. This will give them an extra boost of nutrients to produce plenty of leaves.
Swiss chard is a hardy plant that can survive light and moderate frosts, but a hard frost without protection will kill them. If you live in an area with mild winters, your Swiss chard will likely continue producing leaves all winter long.
Time to Grow
Swiss chard is a prolific plant that grows from early spring all the way until your first heavy freeze, making it a great addition to any kitchen garden.
It's best planted in the early spring as soon as the soil is workable or late summer, when Swiss chard plants love cool weather.
Established plants can usually push through the heat of summer, but they'll need plenty of water, especially if you're growing in a container.
You might need to water daily during the hottest months, and moving your container to a shaded spot during hot afternoons or covering your garden with shade cloth can help cool the soil.
A little touch of frost will actually make your chard leaves taste sweeter, and these leafy greens can survive light and moderate frosts thanks to their savoyed leaves.
However, a hard frost without protection will kill them, so be sure to provide some protection if you live in an area with harsh winters.
Swiss chard is a biennial plant, which means it can last up to two years before going to seed, making it a hardy and long-lasting addition to your garden.
This is why your Swiss chard plant will hang in there throughout harsh winters and hot summers, providing you with a steady supply of delicious and nutritious leaves.
Harvesting and Storage
You can start harvesting Swiss chard leaves as soon as they're large enough for your liking, just go easy at first so the plant can keep growing big and strong. Harvest the outer leaves first, cutting each stem all the way down at the base, and the plant will regrow from its center.
The best time to harvest is once a week from established plants. This will encourage the plant to keep producing more leaves.
Younger leaves are the tastiest, so harvest before leaves get too big. You can harvest from the same plant for up to two years if it's not damaged.
To store Swiss chard, wash the leaves, bag them, and place them in the crisper of your refrigerator.
Gardening with Chard
Swiss chard is a prolific plant that grows from early spring until your first heavy freeze, making it a great choice for square foot gardening.
You can plant Swiss chard in a square foot section with one plant in each corner, just like in the example of a mixed vegetable garden. This will give you a good yield and make the most of your space.
To plant Swiss chard, space the seeds 1 inch apart for baby greens and 6 inches by 18 inches for larger leaves. This will give them enough room to grow without overcrowding.
Here are some tips for tending to your growing Swiss chard plants:
With proper care, you can harvest your Swiss chard in as little as 30 to 60 days from seed, depending on the variety.
Enjoying All Plant Parts
Swiss chard is a prolific plant that grows from early spring all the way until your first heavy freeze.
It's basically the magical plant that looks gorgeous, is super good for you, and doesn't suffer a lot of pest or disease issues.
You can harvest three different vegetables from one Swiss chard plant: the leaves, the stalks, and the roots.
The leaves are the most commonly harvested part of the plant and can be used in a variety of dishes.
The stalks are edible and can be harvested when they're about the size of a pencil.
The roots are also edible and can be harvested when the plant is mature.
Companion Planting in Garden Plans
Companion planting is an optimal way to improve your garden's health and fruitfulness. By planting compatible plants near each other, they can mutually benefit from each other's attributes.
You can plant a variety of vegetables in your square foot sections, including Swiss chard, leeks, marigolds, lettuce, strawberries, onions, bulb onions, radishes, basil, garlic, and rutabaga.
To create a harmonious garden plan, consider the companion planting benefits of marigolds, which can repel pests and improve the flavor of your harvest. Marigolds can be planted near lettuce and other vegetables.
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Here's a selection of vegetables that can be planted in your square foot sections with one plant in each corner of the square:
By planting different kinds of plants close to each other, you can boost growth, repel pests, and improve the flavor of your harvest.
Variety Selection
Swiss chard is a versatile crop that comes in a variety of colors. You can grow Swiss chard with leaves that range from green to red, and midribs that can be white, red, or yellow.
If you're looking for a variety that's both tasty and attractive, consider Fordhook Giant Swiss chard. It has large green leaves and white stems, making it a great choice for bunching greens.
Some Swiss chard varieties are more ornamental than others, with bright red petioles that add a pop of color to your garden. Ruby Red is a great example of this, with its vibrant red midribs.
If you want to grow a rainbow of colors, you can try planting multiple varieties of Swiss chard, such as Five Color Silverbeet Swiss Chard. This variety produces stems in jewel-toned shades of orange, yellow, red, pink, and white.
Here are some popular Swiss chard varieties to consider:
- Five Color Silverbeet Swiss Chard
- Bright Lights Swiss Chard
- Fordhook Giant Swiss chard
- Ruby Red Swiss chard
Garden Setup
To set up a chard square foot garden, you'll need to create a 4 ft x 4 ft raised bed with a depth of 6-12 inches. This size and depth will give you the best ease of use and accessibility to the garden bed.
You can choose from a variety of materials to build your garden box, such as brick, cement blocks, or metal. If using wood, make sure to use untreated lumber like cedar, fir, or pine to eliminate the risk of plant and soil contamination.
For a successful chard crop, ensure your container or raised bed has good drainage. A container at least 12 inches deep is recommended, but 18 inches deep is even better for protecting the plants from bunnies.
Here are some key spacing guidelines to keep in mind:
- Spacing for baby greens: 1” apart
- Spacing for larger leaves: 6” x 18”
- Plants per square foot: 4 to 16
- Time to harvest: 30 to 60 days from seed
Where to Grow
Raised beds are a great place to grow Swiss chard, especially if you can get one that's at least 18 inches deep. This depth helps with drainage and also keeps those pesky rabbits from munching on your tender leaves.
Swiss chard roots only extend about 8 inches deep, so a deeper bed or container is beneficial. You can even grow Swiss chard in a container as shallow as 12 inches deep, but it'll be more successful with more depth.
Mixing equal parts compost with organic potting soil will give your Swiss chard plenty of nutrients to grow big and beautiful. If you want, you can even grow it in 100 percent compost.
Planning Facts
Planning your garden is an exciting step in the process. You'll want to consider the spacing between your plants to ensure they have enough room to grow.
For baby greens, you'll want to plant them 1" apart. This allows them to spread out and get the sunlight they need.
Larger leaves, on the other hand, require a bit more space. Plant them 6" x 18" apart to give them room to grow.
You can fit a surprising number of plants in a small space. Depending on the type of plant, you can fit anywhere from 4 to 16 plants per square foot.
With proper planning, you can be harvesting your homegrown goodies in as little as 30 to 60 days.
How to Build a Garden Bed
To build a garden bed, you'll want to start with a raised bed that measures approximately 4 ft x 4 ft with depths of 6-12 inches.
You can choose from a variety of materials to build your garden boxes, such as brick, cement blocks, or metal.
For a more accessible and user-friendly option, consider using untreated lumber like cedar, fir, or pine to build your garden boxes.
Make sure to select materials that will provide a sturdy base for your garden, allowing you to easily access and maintain it.
Typically, a 4 ft x 4 ft raised bed is a great size for square foot gardening, providing ample space for a variety of plants and easy accessibility.
For more insights, see: Raised Bed Gardening
Guidelines for Square Foot Gardening
To get started with square foot gardening, you can begin with a few easy steps. Square foot gardening is a method of gardening where you divide your garden bed into small, square sections, each measuring 1 foot by 1 foot.
You can plant a variety of plants in your square foot garden, but it's essential to follow some general rules. Individual plants need more space to grow than others, and some can be planted more densely.
For example, Swiss chard roots only extend about 8 inches deep, and it's best to grow it in a raised bed or large container with good drainage. The added height also helps protect Swiss chard from bunnies.
Swiss chard needs at least 4 hours of sunlight a day, though it'll be much more productive with 6 hours. You can grow Swiss chard in a container with a depth of at least 12 inches, and even up to 18 inches for optimal results.
Here are some key planning facts to keep in mind for your square foot garden:
- Spacing for baby greens: 1” apart
- Spacing for larger leaves: 6” x 18”
- Plants per square foot: 4 to 16
- Time to harvest: 30 to 60 days from seed
Frequently Asked Questions
How close together can you plant Swiss chard?
Plant Swiss chard 6 inches apart in the row, with rows 12 inches apart, for optimal growth. This spacing allows for healthy development and prevents overcrowding.
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