2cents
Green Thumb
Posts: 616
Joined: Thu Jan 08, 2009 9:04 am
Location: Ohio

when to top onions for seeds

OK

the onions have seed tops.
when do you cut the tops to use as seeds?

cynthia_h
Super Green Thumb
Posts: 7500
Joined: Tue May 06, 2008 7:02 pm
Location: El Cerrito, CA

Not for a few weeks yet.

The flowers need to bloom in their incredible sphere and be pollinated by bees and their friends. Then the petals will fall off and seeds will develop.

Keep watch on the seeds. When a few begin to fall, place a paper bag over the seed sphere and secure it, maybe with a rubber band.

Wait a couple of days, shake any seeds that haven't fallen freely (you want them to be mature) into your bag, collect your bag--careful not to spill the seeds when dealing with the rubber band--and there you have it: tons o' seeds.

Cynthia H.
Sunset Zone 17, USDA Zone 9

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Gary350
Super Green Thumb
Posts: 7415
Joined: Mon Mar 23, 2009 1:59 pm
Location: TN. 50 years of gardening experience.

I grand parents always told me when the onion tops fall over on the ground in the fall then you can harvest the tops for seeds.

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jal_ut
Super Green Thumb
Posts: 7447
Joined: Sun Jan 18, 2009 10:20 pm
Location: Northern Utah Zone 5

The key is to watch closely. When the seed is ripe it will fall out of the head. You have to watch and harvest them before they all fall on the ground. When the bracts that hold the seed open up and you can see the little black seeds, it is time. You can cut the whole head and put in in a box to dry some, then shake the seed out.



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