FULL SUN / AVERAGE TO MOIST SOIL / 2 GALLONS COMING EVENTUALLY... MAYBE APRIL OR MAY? DUNNO... THEY'RE SMALL STILL. 

I'm not always a fan of Siberian iris because, even though the flowers are super pretty and sweet, the foliage craps out in our summer heat and looks a mess for way too long. This one does that too but I can't resist the masses of pretty little blue flowers in late spring. Just plant it behind taller emerging perennials so you don't have to see the foliage after it blooms. Done.