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Guide to grow stress free green onions indoors in containers in USA

Growing green onions indoors is a better situation control indoors instead of growing them outdoors in odd growing conditions. For beginners, it is not as difficult as other leafy vegetables are to handle. Care of green onion plants is very necessary for the early stages before roots get established either in containers or in the ground. 

Here, I'll tell you about growing green onions indoors in a container at a beginner level so everyone can grow them on their own and become free from market dependence.

Growing green onions indoors

Every year I and my teammates grow green onions in a very decent amount so our family can fulfill their needs. Don't worry, I will help you with the depth of green onion growing. Although there are both ways to grow them from market cuttings and seeds I prefer to grow them from seeds indoors. Though growing from cuttings is a faster way but not as yield-producing as growing from seeds.

Growing green onions in garden

Let's understand some basics of growing green onions in containers indoors. I'm starting with the season of growing them in odd and even climates. 

Season of growing green onions indoors

Although green onions need a specific climate and growing season to grow outdoors with fewer growing restrictions. But still, indoors, we can grow them from spring to fall easily. 

Outdoors, green onions cultivation can start from early spring to mid-summer and early fall to mid-frost. 

Indoors, you must create conditions of cool-warm conditions to grow green onions with pure growth with effective light balance. 

Growing conditions for green onions

  • Soil type

Green onions perform better in well-drained, less in salt, and rich with organic materials. It can be a mixture of soil, compost, sand, and coco-peat if the ordinary garden soil is not enough fertile(mostly it don't). The soil must have enough moisture while sowing seeds and seeds germination. 

  • Climate

Onions can grow in cool or warm climates indoors if specific growing conditions are arranged. Generally, it is not good to grow them outdoors in odd seasons without any precaution and knowledge of onion growing. 

It depends on the climate if you are growing green onions outdoors but indoors you can grow them throughout the year. 

  • Sunlight and shade

Sunlight is a fundamental necessary ingredient of green onions growing indoors. If you can't provide direct sunlight then try to keep it at least near windows where it can get at least bright sunlight in the worst conditions or use LEDs. On an ordinary day, 5 to 7 hours of sunlight is enough for green onions.

It can't tolerate shade for long either at night or daytime. So better to avoid shade for green onion plants otherwise you may lose your green onions. 

  • Temperature

Green onions grow well in moderate to cool temperatures indoors. Better to keep the temperature hold between 45F to 70F. 

Below 25F and higher than 75F is not effective for onions to grow either indoors or outdoors mostly.  

Requirements to grow green onions indoor

Materials required

  • Garden soil 
  • Dry grass or wheat straws
  • Vermicompsot/Organic compost 
  • Onion seeds

Tools required

  • Small cultivator tool
  • Scissors 
  • Planter tool

Selection of containers

To grow green onions in containers, you should choose a long container though it can be thin in width. But a good container for multiple green onions should be a cuboid container that has a measurement of 60x30x30 cubic cm in length, width, and depth respectively. This size of the container is enough for up to 4 to 5 plants of green onions. 

The plastic containers are cheaper, lightweight, and long-lasting to grow green onions further. 

Steps to grow green onions indoors

Step 1- Prepare a rich soil mixture for onion seeds

Take garden soil, sand, and compost in a ratio of 2:1:2 respectively. Mix them in the container you choose to grow green onions. The container must have drainage holes at the bottom. Now, put it in a bigger container and fill water over it so that the soil container can soak moisture in it. This method is effective and doesn't push nutrients at the bottom or flush them easily from drainage.

Step 2- Sprinkling and seeds sowing

For green onions, we generally sprinkle seeds consciously at a certain gap. Instead of sowing them in the soil deep, we just sprinkle them and cover them with a very thin layer of soil. Spray some water on it and wait for seed germination. 

Step 3- Onion seed germination and mulching

After 15 to 20 days, onion seeds start germination and appear in a form of a thin leave of green onion. From here, you need to be very careful with these plants. Keep them in moderate light and cover them with the thin wheat straw as mulching to hold the moisture and heat. 

Keep them in this way till these plants become young plants. 

Step 4- Further growth of green onions

If green onion plants are too close then carefully transplant them on a certain gap in the same container. Keep them in light and regularly check the soil moisture. It will take up to 30 to 35 days from here to reach the first harvesting of green onions. 

Step 5- Harvesting green onions 

So finally, by following all the growing conditions indoors for green onions, you can harvest green onions from 30 to 35 days from sowing. Just use a scissor to cut the older green onion leaves. Cut them one inch above the white bottom section of the plant and let the young leaves grow. 

Step 6- Further harvesting of green onions

These leaves will continue to grow further and will give you more green onion leaf harvesting. Keep the moisture in the soil but don't fertilize because it is not necessary. Wash your green onions, clean them, and use them in your recipes.

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