Gardenality.com · Gardenality Genius · Zone 8A · 10° to 15° F · Comment About Planting
You can plant Yellow Flag Iris in just about any type of soil with about any type of drainage. I grow this iris in my garden pond and in well-drained garden beds. The looser the soil, the more this iris will spread. Will do best with more sun but can tolerate a fair amount of shade as well. This is my favorite iris!

Gardenality.com · Gardenality Genius · Zone 8A · 10° to 15° F · Comment About Pruning
This iris requires little if any pruning...maybe a snip here or there of a faded or broken leaf. Unlike some other irises, the foliage of Iris pseudacorus maintains a nice appearance even after bloom. Foliage will die back during winter so you might want to remove it sometime before new growth emerges in spring. My patch of these is over 10 years old and I've yet to divide it, but it still blooms every May. This is my favorite iris!

Gardenality.com · Gardenality Genius · Zone 8A · 10° to 15° F · Comment About Feeding
I throw a little organic flower food on my patch of Yellow Flag Iris one time a year, when new growth begins to emerge in spring.

Gardenality.com · Gardenality Genius · Zone 8A · 10° to 15° F · Comment About Problems
I've been growing a patch of Iris pseudacorus for over 10 years in my garden and have yet to see any problem with pest or disease. The deer don't like it. This is one tough iris that will grow in almost any type of soil and any type of drainage. I have them planted in a drainage ditch where sometimes they get inundated with water from runoff, but they also do well in dry sites. I've yet to divide the plants and they still bloom heavily every May. The rest of the season the sword-like foliage remains upright and attractive.This is my favorite iris!