How big should the bulb be for blooming?

I have some lycoris radiata that were transplanted 2 years ago;
They haven't been blooming - dug up many, many bulbs that are 1 inch or smaller. Also do they not like being disturbed and transplanted? Will they sulk?

Have some sprekelia bulbs that have never bloomed; do size matter for these to bloom? How big should they be for blooming?

Maybe a stupid question but you didn't prematurely cut off all the foliage, did you? That's been my undoing a few times. Lycoris aren't huge bulbs. I would think after 2 years, they would begin to do something. But for this year's blooms, you shouldn't be seeing anything until later in the summer...

IME with moving Lycoris radiata, they can take a couple years to adjust. Drought the past couple summers really took a toll on mine.

I agree that Lycoris do not like to be disturbed. When I moved here, I transplanted some in April 2015 and didn't get any blooms until late summer 2017 and not all of them bloomed. I'm hoping the rest bloom this year. A mature Lycoris Bulb is about the size of a golf ball, but they will probably bloom before that. They like loose well drained soil and I've read that they like to be on the dry side while dormant, so I do not water them in summer. I let the fall rains wake them up.

Planted some Lycoris I received, took almost 3 years before they bloomed. They take awhile aft transplanting.

Thanks, everyone; so maybe they will bloom this fall.

I am certain everyone knows, that Lycoris are not frost-hardy. If you get blooms in spite of frost, consider yourselves lucky. Cheers!

L. radiata is very reliably hardy here in Z8. I don't know how far north it can go.

I have had them for years here in zone 6b

Ive had Lycoris caldwellii 'Sky Over Sky' in zone 4b for several years.

My lycoris radiata bloom like crazy even after being dug 11 years ago and moved from our old house. What I have trouble bringing to bloom is lycoris squamigera. It was planted 2 years ago, foliage comes up in the spring, but no bloom in the summer.