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Planting Swiss Chard: Tips and Tricks for a Bountiful Harvest

Published: 09.04.2023

Learn how to grow Swiss chard in your home garden with our comprehensive guide. From planting tips to pest control, we cover everything you need to know for a successful harvest.

Swiss Chard Planting Tips for Beginners

Soil Preparation

Before planting Swiss chard, it's essential to prepare the soil properly. This leafy green vegetable prefers well-drained, fertile soil with a pH between 6.0 and 7.0. Start by removing any weeds and debris from the planting area. If the soil is compacted, loosen it with a garden fork or tiller. Add organic matter like compost, manure, or leaf mold to enrich the soil and improve its texture. Work the organic matter into the top 6-8 inches of soil. Swiss chard plants have shallow roots, so avoid adding too much nitrogen-rich fertilizer, which can burn the leaves.

Sun Requirements

Swiss chard thrives in full sun to partial shade. Ideally, it should receive at least six hours of direct sunlight per day. However, in hotter climates, partial shade can prevent the leaves from wilting and bolting prematurely. Choose a planting location that gets morning sun and afternoon shade or dappled light under a tree. If you're growing Swiss chard indoors, place it near a sunny window or under grow lights.

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Watering Needs

Swiss chard needs regular watering to keep the soil moist but not waterlogged. Water deeply once or twice a week, depending on the weather conditions and soil type. Stick your finger into the soil to check for moisture before watering again. Avoid getting water on the leaves, as this can promote fungal diseases. Consider using drip irrigation or a soaker hose to deliver water directly to the soil without wetting the foliage. Mulching around the plants can also help retain moisture and suppress weeds.

How to Grow Swiss Chard in Containers

Choosing the Right Container

Swiss chard is a great vegetable to grow in containers. When choosing a container, keep in mind that it needs to be at least 12 inches deep and 12 inches wide to give the roots enough space to grow. You can use any type of container that has good drainage, such as a plastic or terracotta pot. Make sure the container has a drainage hole at the bottom to prevent waterlogging.

Soil and Fertilizer

Swiss chard grows best in well-draining soil that is rich in organic matter. Use a potting mix that is specifically formulated for vegetables or add compost to regular potting soil. Fertilize the soil with a balanced fertilizer that contains equal amounts of nitrogen, phosphorus, and potassium. You can also add a slow-release fertilizer to the soil when planting.

Container Placement

Swiss chard thrives in full sun, so choose a location for your container that receives at least six hours of direct sunlight per day. If you live in a hot climate, consider placing your container in an area that receives afternoon shade to prevent the leaves from wilting. If you live in a cooler climate, place your container in a sunny location with protection from strong winds.

When planting Swiss chard in containers, make sure to keep the soil moist but not waterlogged. Water the container deeply once or twice a week, depending on the weather conditions. You can also mulch around the plants with straw or shredded leaves to help retain moisture and regulate soil temperature.

Companion Plants for Swiss Chard

Benefits of Companion Planting

Companion planting is a gardening technique that involves planting different species of plants together so that they can help each other grow. This method has several benefits, including improving soil quality, increasing yields, and reducing pest and disease problems. When planting Swiss chard, it's essential to choose companion plants that will enhance its growth and keep pests at bay.

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Best Companion Plants for Swiss Chard

One of the best companion plants for Swiss chard is the carrot. Carrots are known to improve soil quality by breaking up hard soil and adding organic matter to it. They also attract beneficial insects like ladybugs, which can help control aphids and other pests that might attack Swiss chard. Planting carrots and Swiss chard together is a win-win situation as both plants complement each other's growth.

Another excellent companion plant for Swiss chard is the onion. Onions repel pests like aphids, carrot flies, and spider mites, making them an ideal plant to grow alongside Swiss chard. Additionally, onions improve soil quality and are rich in nutrients, making them an excellent source of food for the Swiss chard.

Beans are another great companion plant for Swiss chard. Beans are nitrogen-fixing plants that release nitrogen into the soil, which can improve the growth of Swiss chard. Additionally, beans attract beneficial insects like bees and butterflies, which can help with pollination.

Finally, herbs like basil and dill are also ideal companion plants for Swiss chard. Basil repels pests like thrips and mosquitoes while dill attracts beneficial insects like ladybugs and lacewings.

When to Harvest Swiss Chard

Signs of Readiness

Swiss chard is a great addition to any home garden, and knowing when to harvest it is important to ensure that you get the most out of your plant. Swiss chard is ready to harvest when the leaves are about 6 to 8 inches in length. The leaves should be dark green, glossy, and firm to the touch. If you notice any yellowing or browning of the leaves, this may indicate that the plant is past its prime and should be harvested as soon as possible.

Swiss Chard Storage hacks

Harvesting Techniques

There are several techniques that you can use to harvest Swiss chard. One method is to simply cut the leaves off at the base of the stem using a sharp pair of scissors or garden shears. Another option is to gently pull the leaves away from the stem, being careful not to damage the plant. This method works best for younger leaves that are still tender.

Extend the Life of Your Swiss Chard: Freezing Tips and Tricks

When harvesting Swiss chard, it's important to remove only a few leaves at a time from each plant. This will allow the plant to continue producing new growth throughout the season. It's also important to avoid harvesting more than one-third of the plant at any given time, as this can stress the plant and reduce its overall productivity.

Once you've harvested your Swiss chard, it's important to store it properly to ensure that it stays fresh. You can wrap the leaves in damp paper towels and store them in a plastic bag in the refrigerator for up to a week. Alternatively, you can blanch and freeze Swiss chard for later use.

Common Swiss Chard Pests and How to Treat Them

Identifying Pests

Swiss chard is a relatively hardy vegetable, but it can still fall victim to several pests. The most common pests that attack Swiss chard include aphids, slugs, and leaf miners. Aphids are small insects that suck the sap from the leaves, causing them to wilt and yellow. Slugs are slimy mollusks that feed on the leaves of Swiss chard, leaving holes in the foliage. Leaf miners are small larvae that tunnel through the leaves, leaving unsightly trails behind them.

Organic Pest Control Methods

If you prefer to avoid using chemicals on your Swiss chard, there are several organic pest control methods that you can use. One of the easiest ways to prevent aphids and slugs from attacking your Swiss chard is to keep your garden clean and weed-free. You can also use natural predators, such as ladybugs and lacewings, to control aphids. To deter slugs, you can sprinkle diatomaceous earth around the base of your plants. Additionally, you can use homemade sprays made with ingredients like garlic and chili peppers to repel pests.

Chemical Pest Control Methods

If organic pest control methods don't work, or if your infestation is severe, you may need to resort to chemical pest control methods. One of the most effective insecticides for controlling aphids and other pests on Swiss chard is neem oil. This natural oil works by disrupting the life cycle of pests and preventing them from reproducing. Another option is spinosad, which is a natural insecticide derived from soil bacteria. This insecticide kills pests by targeting their nervous system. If you have a problem with slugs, you can use slug pellets containing metaldehyde or iron phosphate.

Germinating Swiss Chard Seeds

Seed Quality

Before beginning your Swiss chard planting journey, it is essential to ensure that the seeds are of high quality. Check the expiry date on the seed packet and inspect the seeds for any signs of damage or mold. If you have saved your own seeds, make sure they are dry and free from pests or diseases. High-quality seeds will give you a better chance of success when it comes to germination and healthy plant growth.

Seed Starting Techniques

Swiss chard can be started indoors 4-6 weeks before the last frost date in your area. Start by filling a seed tray with a good quality seed starting mix, and moisten it with water. Plant the seeds 1/2 inch deep, spacing them about 2 inches apart. Cover the seeds with a thin layer of soil and gently press down.

Next, cover the seed tray with plastic wrap to create a mini greenhouse effect. Place the tray in a warm spot, ideally between 65-75°F, and ensure that the soil remains moist throughout the germination process. Germination typically takes 7-14 days.

Once the seedlings have emerged and grown their first set of true leaves, they can be transplanted into larger containers or directly into your garden bed. Swiss chard prefers well-draining soil and partial shade, so choose a spot that receives at least 4 hours of sunlight per day.


If your Swiss chard seeds do not germinate after 2-3 weeks, it could be due to a few reasons. Firstly, check that the soil temperature is within the recommended range for germination. Secondly, ensure that the soil is consistently moist but not overly saturated as this can lead to rotting of the seeds. Finally, check that the seeds are not too old or damaged.

If your seedlings are growing slowly or appear weak, it could be due to a lack of nutrients. Consider adding a balanced fertilizer to the soil to help them along. Additionally, Swiss chard can be prone to pests such as aphids or slugs, so keep an eye out for any signs of damage and take action promptly.

Swiss Chard Seed Spacing

How Much Space Do Swiss Chard Plants Need?

Swiss chard is a popular leafy green vegetable that is easy to grow and perfect for beginner gardeners. Before you start planting, it's important to know how much space Swiss chard plants need. Swiss chard needs about 18 inches of space between each plant to grow properly. This will give each plant enough room to spread out and grow a healthy root system.

Spacing Techniques

There are different spacing techniques that you can use when planting Swiss chard. One method is to plant the seeds directly into the ground, spacing them about 1 inch apart in rows that are 18 inches apart. Once the seedlings emerge, thin them out to leave only one plant every 18 inches.

Another technique is to plant the seeds in seed trays or pots and transplant them when they are about 4 inches tall. Transplanting ensures that each plant has enough space to grow and reduces competition for nutrients and water. When transplanting, space the plants 18 inches apart in rows that are also 18 inches apart.

It's important to note that Swiss chard can also be grown in containers. If you are planting in containers, choose a container that is at least 8-10 inches deep and has a diameter of 12-16 inches. Plant one Swiss chard seedling per container, ensuring that there is enough space between each plant to allow for proper growth.

Planting Swiss Chard in Pots

Advantages of Container Gardening

Container gardening is a great way to grow plants, especially if you have limited space. It offers several advantages such as flexibility, convenience, and ease of maintenance. One of the benefits of container gardening is that it allows you to move your plants around to follow the sun or to protect them from extreme weather conditions. It also makes it easier to control the soil quality, water, and fertilization needs of your plants. Additionally, container gardening is ideal for those who don't have access to a garden or who live in an apartment or condo.

Choosing the Right Pot

Choosing the right pot is crucial for successful container gardening. When it comes to planting Swiss chard, a deep pot with a diameter of at least 12 inches is recommended. This will provide enough room for the roots to grow and ensure that the plant has enough stability. The pot should also have drainage holes at the bottom to prevent waterlogging and promote healthy root development. It's also important to choose a pot made from a material that can withstand outdoor conditions, such as ceramic, plastic or terracotta.

Planting Techniques

Planting Swiss chard in pots is relatively easy and straightforward. Start by filling the pot with a good quality potting mix that's rich in organic matter. Then make small holes in the soil surface, about half an inch deep, and place two to three Swiss chard seeds in each hole. Cover the seeds with soil and water thoroughly. Once the seeds germinate, thin them out so that there's only one plant per hole. Swiss chard thrives in full sun but can tolerate partial shade as well, so place your pot in a spot that gets at least six hours of sunlight per day. Water your Swiss chard regularly but avoid overwatering as this can lead to root rot.

Tips for a Healthy Swiss Chard Harvest

Watering and Fertilization

Swiss chard is a leafy green that thrives in moist soil. Therefore, it is essential to water it regularly to prevent the soil from drying out. The best time to water Swiss chard is in the morning, as this allows the leaves to dry during the day, reducing the risk of fungal diseases. Ensure that you water the plants deeply and avoid getting water on the leaves, as this can promote the growth of fungi.

In terms of fertilization, Swiss chard requires adequate nutrients to grow healthy and strong. You can use a balanced fertilizer that contains nitrogen, phosphorus, and potassium. Apply the fertilizer before planting or after thinning the seedlings to avoid damaging the young plants. Alternatively, you can use organic fertilizers like compost or manure to supply nutrients to the soil.


Mulching is an excellent way to conserve soil moisture and suppress weed growth around Swiss chard plants. You can use organic mulches like straw, hay, or shredded leaves to cover the soil around the plants. Mulching helps regulate soil temperature and prevents soil erosion during heavy rains. Additionally, it provides a natural source of nutrients as it decomposes over time.

Ensure that you keep the mulch layer thin, about two inches deep, to avoid creating a breeding ground for pests and diseases. Also, keep a small gap between the mulch and the base of the plants to prevent stem rot.

Disease Prevention

Swiss chard is susceptible to various diseases like leaf spot, downy mildew, and root rot. You can prevent these diseases by practicing good garden hygiene and cultural practices.

Avoid overcrowding the plants as this creates a humid environment that promotes fungal growth. Thin the seedlings early to ensure proper air circulation around each plant. Also, remove any infected plant debris from the garden immediately and dispose of them offsite.

Finally, ensure that you rotate your crops every season to prevent the buildup of soil-borne diseases. This involves planting Swiss chard in a different location each year, preferably after a different family of vegetables.

Final Tips for Growing Swiss Chard

Overcoming Common Challenges

As with any plant, Swiss chard can face its own set of challenges. One common issue is pests, such as aphids and slugs. To prevent these pests, use natural remedies like neem oil or diatomaceous earth. Another common challenge is mildew, which can be avoided by watering the plants at the base and not over the leaves. Also, make sure to space the plants adequately to promote good air circulation.

Long-Term Care

Swiss chard is a hardy plant that can produce for several months, making it an excellent addition to your garden. To keep the plants healthy and productive, ensure they are getting enough water (about 1 inch per week) and that they are not overcrowded. As the plants grow taller, remove any yellow or damaged leaves to promote new growth. If you notice the plants starting to bolt (produce flowers), harvest them immediately as this can cause the leaves to become bitter.

Creative Recipe Ideas

Swiss chard is a versatile vegetable that can be used in a variety of dishes. The leaves are delicious sauteed with garlic and olive oil or added to soups and stews. The stems can also be cooked and have a slightly sweeter taste than the leaves. One creative recipe idea is to make Swiss chard chips by tossing the leaves with olive oil and salt and baking them in the oven until crispy. Another fun idea is to use the leaves as a wrap for rice and veggies, similar to a sushi roll.

Author: Michael Chen
Bio: I'm gardening specialist with a mission to empower people to grow their own fruits and vegetables. With my background in Plant Science from the University of California and experience working with farmers and community gardens, I'm dedicated to promoting sustainable agriculture practices and helping individuals achieve bountiful harvests. Let's get growing!