L. speciosum rubrum is the same color as 'Stargazer' but the blooms are smaller and point down and sideways. In my garden it is a far better grower/performer.
'Black Beauty' is a hybrd from it that is absolutely outstanding.

But mine I didn't divide after 4 years, and this year I only got one bloom at the top, no multiple, gorgeous blooms as in other years. I also sprinkled Bloom Booster around late last spring which did seem to make the leaves look healthier.

So I was going to dig up as many bulbs and bulblets as I can of both Stargazer and the nearby Aubade (lost a few of the latter). It's rained so I can dig there again much more easily plus they are starting to turn brown (that's normal for this time of year in my zone).

What should I do with the bulbs? Are they spent? I'd buy more and plant them somewhere else but not if I don't get a good match to what I had. So is there's any way to rejuvenate mine or should I just give up on them?