I have to ask. Why? It will take over a garden if given a chance. Those seeds seem to have a 200% germination rate!
Tally HO!

I really don't know, as Tally pointed out, some of us have no reason to try rooting it. But give it a shot, what have you got to lose.

It is not supposed to be hardy out side zones 9 & 10. I don't recall seeing it growing when I lived in other places.

I live in zone 8, and have had 18 of them in ground for 3 or 4 years now. I know a lady in SA who grows one in a large pot that stays outside year round as well. She's had that thing a good 10 years at least. Sometimes the foliage freezes and dies back but they always come back - so far.

I just read recently on the propagation forum that they won't root from cuttings. I believe it was division and seed only.

I am in North Texas, and have them inground. They are not invasive at all for me though I do have a few that come up from reseeding. I have always found a home for them up here. They have their place in the garden, especially when they get frozen back and are not invasive.

Mine in 7B come back from the roots also, but I have not seen any reseeding. Could be because I mulch a lot. I have tried the low-tech method of sticking broken bits in the soil, but none have rooted yet.

I gotta give 'em bonus points, they survived being Iked. Very few dead ones. And they are sprouting everywhere now.
Tally HO!

Have you looked at the roots and all those tubers strung out all over from one end of the root to the other? They do just as well as the tuber above ground.

I unpot mine and take a spade to it, dividing the roots into 4 parts each spring.

I have to take a saw to mine to divide them!

BTW, I love asparagus fern; in pots, planters, and in the ground too.

A big serrated knife or a machete works too.
Tally HO!