If you can’t visit these bulbs in their natural wild habitat read the wild stories from a Latvian bulb collector Janis Ruskans.
Small Iris bulbs should be replanted and thinned every 2-3 years to retain flower power.

If you like Iris reticulata and a good travel yarn then you could do a lot worse than read ‘Buried Treasures: Finding and Growing the World’s Choicest Bulbs’ by Janis Ruksans

I think of Janis as the wild ‘ iris bulb man’ for the work he performs on breeding the various varieties in his Latvian nursery.

Janis Ruksans has been growing bulbs since age twelve and from 1991 has operated his own bulb nursery in his native Latvia. Janis is an expert specializing in rare and unusual bulbs. This book includes stories of his travels on several expeditions searching for new bulbs throughout Europe and Central Asia. He has also written a respected work on ‘Crocuses A complete guide to the genus’.

Unusually late these Iris reticulata normally bloom in the wild as soon as the snow melts on the mountain side.
Normally in the wild they remain dry during summer.
The bulbs should be replanted and thinned every 2-3 years to retain flower power.

Other Links
Look Forward to Winter and Iris Reticulata
Iris Reticulata and Histroides Species
Growing Iris From Bulbs
Tips for Growing Spring Iris from Bulbs