Mastering the Art of How to Grow Green Onions Indoors

Welcome to the world of indoor gardening! One of the most rewarding and convenient plants you can grow at home is green onions. Not only do they add delicious flavor to your favorite dishes, but they are also easy to cultivate and maintain. In this article, we will guide you through the process of how to grow green onions indoors, from selecting the right containers to harvesting and storing your crop. You don’t need a green thumb or a large outdoor space to enjoy fresh green onions year-round. Let’s get started!

Why Grow Green Onions Indoors?

Indoor green onion cultivation has become increasingly popular due to its many benefits. Growing green onions at home means a fresh supply of this versatile herb is readily available year-round, saving you money, and making it a convenient addition to your kitchen arsenal.

Not only are indoor green onions a cost-effective solution, but they are also a great way to ensure that the herbs you are consuming are entirely organic and pesticide-free. Plus, growing green onions indoors allows you to avoid the unpredictable outdoor elements and maintain optimal growth conditions, improving your chances of a successful harvest.

Getting Started with Indoor Green Onion Cultivation

Growing green onions indoors is an excellent way to ensure a year-round supply of fresh herbs while also saving some money. Here’s how to get started:

Select the Right Containers

The first step is to select the right containers for your green onions. You can choose from a variety of options, such as small pots, jars, or even recycled containers. Just make sure that they have proper drainage holes and are deep enough for the green onion roots to grow.

Prepare the Soil or Growing Medium

Next, you’ll need to prepare the soil or growing medium for your green onions. The ideal soil should be well-draining and rich in organic matter. Alternatively, you can use a hydroponic growing medium, such as perlite or coconut coir.

Acquire Healthy Onion Sets or Seeds

Once you have your containers and soil ready, it’s time to acquire healthy onion sets or seeds. You can find them at your local nursery, garden center, or online. Choose sets or seeds that are firm, plump, and free from signs of damage or disease.

Proper Care for Indoor Green Onions

Indoor green onions require specific care to ensure healthy growth and maximum yield. Here are some tips for proper care:

Aspect Requirement
Sunlight Green onions need at least 4-6 hours of direct sunlight per day, preferably in a south-facing window. If natural light is not sufficient, consider using grow lights to supplement the light source.
Watering Water the green onions occasionally, but do not overwater as this can lead to rotting. The soil should be moist but not soggy. Check the soil once a week and only water when it feels dry to the touch.
Fertilization Feed the green onions once a month with a balanced fertilizer. Alternatively, you can use a compost tea or a diluted fish emulsion solution to give the onions the nutrients they need.

Additionally, you should pay attention to any signs of pests or diseases. If you notice any yellowing leaves, wilting, or unusual growth patterns, identify the problem and take action immediately. Common issues include aphids, thrips, and onion maggots. You can use natural remedies like neem oil, insecticidal soap, or diatomaceous earth to deter pests and control infestations.

Tip: To prevent mold or mildew growth, avoid overcrowding in the containers and ensure good air circulation around the plants.

Harvesting and Storing Indoor Green Onions

When growing green onions indoors, it’s important to know when to harvest them to ensure they have the best flavor and texture. You can start harvesting your green onions once they have grown to about 6 inches in height, depending on the variety.

Using a clean pair of scissors or garden shears, cut the green onions at the base of the stem, leaving about an inch of the white bulb attached. Avoid pulling the onions out of the soil, as this can damage the roots and affect the growth of new onions.

Once harvested, you can store your green onions in the refrigerator for up to a week. To keep them fresh, wrap the onions loosely in a damp paper towel and place them in a plastic bag or airtight container. Alternatively, you can chop the onions and freeze them in a sealed bag or container for up to six months.

Troubleshooting Common Issues in Indoor Green Onion Growing

Despite following the best practices for indoor green onion cultivation, you may encounter some common problems that affect the growth and yield of your plants. Here are some tips to troubleshoot and overcome these issues:

Yellowing Leaves

If your green onion leaves turn yellow, it may indicate a lack of sunlight or nutrients. Ensure that your plants receive at least 6 hours of direct sunlight or use grow lights to supplement the light. Also, consider adding a balanced fertilizer to the soil or growing medium to provide essential nutrients.

Wilting or Slow Growth

If your green onion plants appear weak or are growing slowly, it could be due to insufficient watering or poor drainage. Make sure that your containers have adequate drainage holes and add a layer of gravel or sand at the bottom to improve drainage. Water your plants regularly, but avoid overwatering, which can lead to root rot.

Pests or Diseases

Indoor green onions may attract pests like aphids, thrips, or spider mites that can damage the leaves and stems. To prevent infestations, keep your plants clean and free of debris, and isolate any infected plants. You can also use organic insecticides or homemade remedies like neem oil or garlic spray to repel pests. If you notice any signs of disease, such as fungal growth or spots on the leaves, remove the affected parts and treat the remaining plants with a suitable fungicide.

With these tips, you can overcome common issues and enjoy a bountiful harvest of flavorful green onions grown right in your own home.

Expert Tips for Successful Indoor Green Onion Cultivation

Are you ready to take your indoor green onion cultivation to the next level? Check out these expert tips to enhance your success:

1. Focus on Temperature Control

Green onions require consistent temperatures to thrive. Ideal temperatures range from 60 to 75 degrees Fahrenheit. Consider investing in a temperature-controlled grow light or heating pad if your growing area is too cold.

2. Companion Planting Is Key

Companion planting can significantly improve the health and yield of your green onions. Consider planting them alongside other herbs like basil, parsley, or cilantro, which can deter pests and attract beneficial insects.

3. Maximize Your Limited Space

If you’re short on space, you can still grow green onions indoors. Consider using hanging baskets or vertical gardening systems to maximize your growing area. You can also regrow green onion scraps in jars or small containers to make the most of your space.

4. Don’t Overwater Your Onions

Overwatering is a common mistake that can lead to root rot and other issues. Allow the top inch of soil to dry out before watering, and make sure to use well-draining soil or growing medium.

5. Provide Adequate Sunlight

Green onions require at least six hours of sunlight per day. If natural sunlight is limited, consider using grow lights or placing your plants near a sunny window. Alternatively, you can grow green onions in a sunny outdoor area during the warmer months.

By following these expert tips, you can maximize the success and enjoyment of your indoor green onion cultivation. Happy growing!

FAQs about Growing Green Onions Indoors

Here are some of the most commonly asked questions about how to grow green onions indoors:

1. Can I grow green onions indoors all year round?

Yes, one of the benefits of growing green onions indoors is that you can have a fresh supply year-round. Just make sure you provide the right conditions for them to thrive.

2. What kind of container should I use?

You can use any container that is at least 6 inches deep and wide enough to accommodate your green onion plant. You may also want to consider using a container with drainage holes to prevent water from accumulating and causing root rot.

3. How often should I water my indoor green onions?

Water your green onions when the soil feels dry to the touch. Depending on the humidity and temperature, this can range from once a week to every two days. Avoid overwatering as it can lead to root rot and other issues.

4. How much sunlight do indoor green onions need?

Green onions need at least 6 hours of sunlight per day. If you don’t have access to natural sunlight, you can use artificial grow lights to provide the necessary light for their growth.

5. Can I regrow green onions from scraps?

Yes! You can regrow green onions from scraps by placing the bottom inch of the bulb in water or soil and providing the right conditions for it to grow. This is a great way to reduce food waste and enjoy fresh green onions for free.

6. What are some common pests or diseases that may affect my indoor green onions?

Common pests include aphids, mites, and thrips. Diseases include damping off and botrytis. To prevent and address these issues, make sure to keep your indoor environment clean and dry, and avoid overwatering or overcrowding your plants. Consider using organic pest control methods like neem oil or insecticidal soap if necessary.

By following these tips and guidelines, you can enjoy the satisfaction and convenience of growing green onions indoors successfully and to your liking!


Congratulations, you are now equipped with the knowledge to start growing green onions indoors!

By taking advantage of indoor green onion cultivation, you can enjoy the convenience of always having fresh herbs at your fingertips while saving money and reducing waste.

Remember to select the right containers, prepare the soil or growing medium, and acquire healthy onion sets or seeds to get started. Once your green onions are growing, make sure to provide the right amount of sunlight, moisture, and nutrients to promote healthy growth.

If you encounter any challenges or issues, refer back to our troubleshooting guide or expert tips section for helpful solutions.

Now that you know how to grow green onions indoors successfully, it’s time to start enjoying the fresh taste and convenience of homegrown green onions. Happy gardening!