How to grow onions from grocery onions
Updated: Apr 26
I have been planning to start my vegetable garden in containers, because I live in a small apartment, I don't have access to a land where I can garden. But since I‘m bored and want to try to be more self-sufficient, I’ll still try and see how this goes.
Due to the lockdown, I have been able to start my gardening projects. One of this is to start my veggie garden using vegetables from the grocery and I decided to start with red onions. ( White onions grows faster actually, you can try it, just follow the same steps.)
Red onions or Allium cepa are very easy to propagate according to resources. It was also recently discussed on our Plant Propagation module and it makes me feel more confident that I would get desirable results.
The first thing I did was to pick a healthy and “not too old“ onion from my stocks. I made a cross-sectional cut an inch from the base.
Then, I let it dry out for 18 hours.
Some people directly plant the bulbs outside under full sun, some people put it immediately on water and observed for rooting. I am not sure which would be more effective as I am also tying it for the first time but I keep my blogs as journals as well, that I can use as reference in the future so once I‘ve tried other methods, I can update this and let you guys know. We all learn in this together.
After 18 hours, and when the onion top looks dry, I stick toothpicks on the sides to keep it afloat on water.
(I added a bit more water here up to the brim of the container.)
As you can see, I made cuts on the other to observe which will develop more buds.
(The pictures above were taken after 5 days in water.)
After 5 days, I can see some root growth. So, I decided to plant it in a pot. I put it in moist soil, then covered the top with soil then watered it with clean water. (I don’t use tap water on my plants here, instead I boil water and let it cool down).
Place it in a sunny location.
Also, onions prefer slightly acidic soil, around 5.5-6.5. Litmus paper available in garden shops or online can b me used to test the soil pH. It is just a piece of paper that you can dip on the solution and compare colour changes from a table to determine pH range.
I will observe this for sprouts and update my blog with pictures. It might take 3-4 months for it to fully mature.
Stay tuned for updates.