Instructables

Grow Onions from Discarded Onion Bottoms

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Step 4: Finish

Once the onion bottom has developed a few leaves, remove from the pot.

Remove old onion scales.

Separate plants as needed by slicing between plants and leaving a portion of the roots attached.  You may have more than 1 plant develop from a single onion bottom.

Replant in a prepared growing bed.

Cut leaves down to 1/3 of the size to allow the bulb to develop.  This might seem harsh, but the onion will regrow those leaves with less stress.

Repeat the process.  Harvest as green onions or fully developed mature onions.
 
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pwillett13 years ago
I have an onion that has sprouted in the vegetable bin, and the bulb is going squishy. Is there some way I can plant it in the garden at this point, or do I need to just root the bottom first. If so, do I just discard the sprouts coming out of the top of the bulb? If I cover the bottom with potting soil, how will I know when it has a good set of roots?
AngryRedhead (author)  pwillett13 years ago
I have planted squishy onions in the ground and had good success with them rebounding.  Of course, I've had a few that just continued to turn to mush.  It'll be a judgment call.  You can plant it as it is, or you can remove the squishy bits and then plant the remaining bulb and shoots.
numian4 years ago
I have never tried this with onions before but have done it with many fruits & vegetable that have seeds.  Produce is so expensive I just couldn't accept  not using the seeds.  Not that seeds are expensive I guess it's just principle. Some seeds I've tried to grow from store bought produce are listed below:
Yellow & red Peppers-Let them dry in a glass or ceramic bowl on a windowsill before planting.
Cantalope-easy to germinate, just plant the seeds as they are removed from the fruit, no need to clean.  Spead them out because it seemed every one sprouts! They need lots of room to grow
Potatoes-easy
cucumbers- Let them dry first need to climb easy to grow
Mango & avocado- More difficult-use the small round HAAS avacados not much luck with Mangos
Watermelon-Easy to grow except the "seedless" variety:-)

I save seeds also.  After they've dried keep in plactic ziplock snack bags. I put the date  and what they are and store them in a drawer.  Toss them out after 2 years, not worth the time, just save more!
Has anyone tried to grow pomegranite seeds?
Yes! Where I come from pomegranate grows like weeds!!! Put the seeds in a pot and wait. Good luck and happy gardening! I always love it when people grow their own food!
ahmad21174 years ago
very nice, but can i eat the onions