How to Grow Green Onions in a Pot By Pamela Gardapee, eHow Contributor updated: October 9, 2010
When gardening space is limited or no space is available, you can grow green onions in a container on the patio, window sill or on a balcony. When you use container gardening for your green onions, you avoid common nuisances such as poor soil conditions, nematodes and disease. However, you must choose the correct variety of green onion to grow in a pot and use the correct growing medium.
Difficulty: Moderate
Instructions
Things You'll Need:
- Container
- Green onion transplants
- Food thermometer
- Cookie sheet
- Tin foil
- Pasteurized soil (processed garden soil)
- Sphagnum peat moss
- Perlite
- Composted cow manure
- 1Select a container that has drainage holes on the side of the container about 1/4 inch up from the bottom. Side drainage holes are more suited for vegetable growing than bottom drainage holes. Ideally, the container should be 6 inches in diameter with a height of 6 to 10 inches.
- 2Make pasteurized soil that is free of weed seeds and disease. Take some soil from the garden (it should equal one part of the rest of the ingredients). Place the soil on a cookie sheet, spread out. Cover the cookie sheet with tin foil. Make a small hole and insert the food thermometer. Place the cookie sheet in a preheated oven at 250 degrees F until the temperature of the soil reaches 180 degrees F for a continuous 30 minutes. Remove and cool.
- 3Mix up the medium for the green onions. Use 1 part perlite, 1 part pasteurized soil and 1 part sphagnum peat moss. Mix together and add 1 part composted cow manure. Add the medium to the container. Do not use any additional fertilizer when using the cow manure.
- 4Plant up to six green onion transplants in one container. Use beltsville bunching, crysal wax or evergreen bunching for container gardening. Poke your finger in the medium to make a hole deep enough to fit the tiny roots. Place each transplant in a hole and cover with medium, lightly packed soil.
- 5Place the container in full sun for three to four hours and shade for the rest of the day. Continue moving the container each day or place the container in a location that only gets three to four hours of direct sunlight each day.
- 6Water the green onions once a day, but do not allow the soil to become soggy or the onion plants will die. If you notice that the soil is still moist the next day, wait a day before adding more water.
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