Iris: Bulbous Iris (S, F)
Dutch Iris, Dwarf Iris
Grow in full sun and well-drained soil. They form large clumps and live for many years. Most require dry soil during the summer in order to bloom reliably in following years. Space the bulbs 4-6" apart and 2-4" deep in groups of at least six bulbs.
Iris danfordiae & Iris latifolia - Zone 5
Dutch hybrids - Zone 4
Iris reticulata & Iris xiphium (Spanish) - Zone 3
