How to grow douglas iris

When to plant douglas iris

An evergreen perennial that blooms every spring. It tolerates full sun but does best with filtered morning sun and bright shade most of the day, in slow-draining soil including heavy clay. Fall is the time to plant it, like other natives; it needs little or no summer water.

Douglas Iris is timed by season rather than your frost dates, so the planting calendar does not generate ZIP-specific dates for it. Check the cited sources below to fine-tune for your area.