If answered straight, the onions do not grow underground, only onion bulbs grow underground.
We saw many gardeners sowing yellow onions and red onions only for their bulbs. Moreover, green onions are grown above the ground for their stalks.
It has been noticed and studied that onions produce edible parts not only above the ground but underground also and it depends on how we plan to harvest and use it.
Bulb onions are cultivated for the sweet, pungent flavored bulb. They are developed underground.
Do Onions Grow Underground?
Onions are grown both underground and above the ground. The actual answer to the question is debatable as the part of the onion that grows underground that is bulbs are used for harvesting yellow and red onions.
Moreover, the tops of the onion are used to grow green onions. Green onions are onions with a long stem and are grown above the ground. It is also called Spring onions.
How to Grow Onion Bulbs Underground?
Growing onion bulbs underground is not a hectic task to do. Below in this article, we will provide you with the elaborative steps related to how you can grow online bulbs underground.
Before planting the seedling, you are required to test the soil. The soil has to be slightly acidic and should contain organic matter that is full of nitrogen. Drain your garden soil well before planting down the seeds. You may also add organic fertilizer to the soil in case it lacks nutrients.
Follow the steps provided below to grow onion bulbs underground:
➤ Step 1: With the help of your gardening instruments make furrows in the soil 1.5 inches deep and 1.5 feet apart.
➤ Step 2: In the furrows place the bulbs of onion. Make sure to keep each at a distance of 3 inches.
➤ Step 3: You are required to cover the bulb of onion with soil.
➤ Step 4: After covering the bulb with water you need to water the onions to make the soil moist without puddles.
➤ Step 5: You are advised to spread mulch around the onion to conserve water.
➤ Step 6: After a few months, harvest the underground onions.
How to Grow Onion Stalks Above the ground?
Onion stalks can be referred to as Spring onions that have tender white stems with green stalks on the top. It is mainly used to garnish a variety of foods. As the requirements are minimal, it is very easy to grow and doesn’t take much place in the garden. Below we will tell you the elaborative steps to grow your onions.
Green onions from seed or sets
➤ Step 1: You are required to choose the type of onion to grow. You can choose red white or onion sets.
➤ Step 2: You have to prepare the land for planting the onion. We recommend you choose the place in the yard that gets sufficient sunlight. Make sure to remove the rocks, sticks, and weeds away from the land.
➤ Step 3: After preparing the land you have to wait for four weeks before the last frost. You can sow the seeds 1.5 inches deep with a row space of 0.3 m. in case you have set then sow them 1 inch deep with 2 inches apart.
➤ Step 4: Trim the plant if you want to have a thin plant. As the first green shoots pop up, choose either to trim them or not. It is advisable to have a space of 2-3 inches apart.
➤ Step 5: At last, with the help of grass clippings cover the seedlings of the soil.
➤ Step 6: Green onions need moist soil therefore water them frequently. You are required to make the soil moist, not soggy.
frequently asked questions (fAQs)
After careful observation, it has been said that onions take around 3 to 4 months to grow from planting to harvest. In case you want spring onions that are commonly known as green onions then they take about 3 to 4 weeks to harvest.
The answer gets debatable as the bulb of the onion grows underground and the onion tops grow above the ground. Moreover, it has been noticed that the gardeners harvest yellow onions and red onions for the bulb.
Yes, you need to earth up the onions as the fragrant stem is hardy and high-maintenance. Also, you need to earth it up as the stems grow.
We hope that you are absolutely clear about onions’ growth and how they grow underground. Growing onions is not clumsy work to do if done rightly. Moreover, you can follow the steps mentioned in this article to understand how to grow stalks above the ground and onion bulbs under the ground.