Do Dwarf Irises Spread

In fact, most dwarf irises only reach about 6 to 8 inches (14-16 cm.) tall, making them ideal for borders or even edging. These tiny wildflower wonders spread through underground rhizomatous stems, filling the garden with their lovely spring blooms.

What to do with dwarf iris bulbs after flowering?

When they flower, keep them outside but place them somewhere you can appreciate their lovely form and delicate scent. After flowering, give the bulbs a potash feed before they die back to strengthen them for next year.

Is it too late to plant dwarf iris bulbs?

The best time to plant bulb irises is in September and October, but they can be planted as late as November. Bearded iris rhizomes should be planted in August-October. Beardless pot-grown irises can be planted from spring to autumn.