them in the ground as is?
'Regina' is a clumping iris so that might be why it looks crowded. I would plant as is. They need to have 12 leaves before it will bloom, according to this article.
https://www.gardeningknowhow.com/ornamental/bulbs/walking-iris/walking-iris-plants.htm
I am not capable of bending over or sitting on the ground as I will not be able to get up.
Unfortunately, manual removal is the only way to, selectively, kill Iris.
You might try your local extension service. They may be able to help you with this. Here is a link that will help you to find the closest one to you:
What animal is destroying Sweet Iris plants at night and taking the bulbs? Any info appreciated - such beautiful plants - so sad.
It could be any number of nocturnal animals in your area.
Here is an article that will help:
https://www.gardeningknowhow.com/ornamental/bulbs/bgen/protect-flower-bulbs.htm
This is the second year for this to happen. The ones that bloom are beautiful but the fungus on a different bloom (on the same stem) never opens. It has now spread to a rhodendrum across the driveway about 25' away. I pick off the fungal blossoms and incinerate in a bag.
Usually, infections are specific to plant families and won't spread to others. Dropping buds are often weather related, i.e., a cold night while the bud was forming. Also thrip feeding can cause blackened or dying buds.
https://www.gardeningknowhow.com/plant-problems/pests/insects/controlling-thrips.htm
Irises are overcrowded and failing to bloom.
May is winter for you, isn't it? Here, it would be getting close to time to move them, but if it is winter where you are, then this would not be the appropriate time.
Moving should be done just after the flowers fade for the year.
This article will help:
https://www.gardeningknowhow.com/ornamental/bulbs/iris/dividing-transplanting-iris.htm
Here is an article that will help:
We've had too much rain this year for my bearded iris. They are old antique plants that I don't want to lose, but some of the leaves are turning brown and some of them are spotted which looks like rust. Can I cut those leaves back now? Is there anything else I need to do to make sure I don't lose these plants?
I hope this is simple leaf spot, but it could also be more troubling, especially since you've had an unusual amount of rainfall. Here is an article on iris roots that may be helpful: https://www.gardeningknowhow.com/ornamental/bulbs/iris/rotting-iris-roots-bulbs.htm
And here are a couple more articles that may help if the problem is not as serious:
https://www.gardeningknowhow.com/ornamental/bulbs/iris/iris-leaf-spot.htm
https://www.gardeningknowhow.com/plant-problems/environmental/what-causes-brown-edges-on-leaves-of-plant.htm
I have blue water irises in my pond; need to know when to prune back and how.
If you live in a cooler climate, cut them back to just above the water line in the fall.
https://www.gardeningknowhow.com/ornamental/bulbs/iris/water-iris-plant-care.htm
https://www.gardeningknowhow.com/ornamental/bulbs/iris/growing-flag-iris-plants.htm