Hi, Sandra.  Garlic is one of my favorite garden crops, especially because it is the first to pop up in the spring!

As a reference, here are a couple of links to planting garlic:

 https://www.uvm.edu/news/extension/its-time-plant-garlic

https://pss.uvm.edu/ppp/articles/garlic.html

https://extension.umaine.edu/agriculture/garlic/

And here is a fact sheet about garlic nematodes:

https://ag.umass.edu/vegetable/fact-sheets/garlic-bloat-nematode

If you are buying from a reputable grower (such as Burpee or Fedco or High Mowing), and you did not have evidence of nematodes this year, I would not worry about nematodes.  One good piece of advice however, is to rotate your crops.  So don't plant this fall's garlic in the same bed you planted last year.

If you liked the garlic you harvested this year, consider using some of it as your own seed garlic.  I always save out the fattest, healthiest bulbs from my harvest and plant those cloves for the next year.

Good luck!

Juanita - UVM EMG

Hello, again.  Do you mean the "seeds" (bulbils) that form from the tops of garlic stems (scapes) when you let them flower?  You can plant these "seeds", and they will grow garlic cloves, but not in one year.

If you search "growing garlic from bulbils" online, you'll find more information such as in these links I found (which are not from an extension service, by the way):

https://practicalselfreliance.com/growing-garlic-from-seed/

https://seeds.ca/d/?n=web/ebulletin/2016-08-en/articles/garlic

For myself, I scatter those seeds along the edge of my garden from time to time, and I enjoy seeing the garlic that grows up here and there.  I don't harvest it (small cloves), but let it reseed and regrow, garlic being a good pest deterrent!

- Juanita UVM EMG