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Walking Iris

Neomarica caerulea

Neomarica caerulea on 20% ET0 in June 2013. Photo: SK Reid.
Neomarica caerulea on 20% ET0 in June 2013. Photo: SK Reid.

Summary

The walking iris is a little grown plant, but with potential for dry shade gardens since its foliage is tall and striking throughout the year. The only notable difference in size between treatments was a slight advantage of the 80% over the 20% during the last two months of summer. The significance of the difference faded, however, with the first fall rain. As with the Festuca, the highest overall appearance ratings did not go to the largest plants but to the smallest on the 20% treatment. This is understandable when you take into consideration that taller more succulent leaves are prone to bending over in the breeze and creasing. The 80% treatment did have the highest flowering rating, but the flowers, though beautiful, are small, very fleeting, and not the main feature of this plant.

In conjunction with the trials, bush germander was also grown in several UCCE Master Gardener demonstration gardens throughout California. As a part of the trials, UCCE Shasta County plants suffered irreparably from frost damage and never fully recovered. Both Ventura and Orange County recommended the iris for their area as a tall striking plant for dry shade.

Basic Info

Submitted by: UC Davis Arboretum
Trial Exposure: 50% Shade
Year evaluated: 2013
Height & Width
(after 2 years):
40" x 49" - UC Davis
Reported Height & Width
(at maturity):
4-5' x 2-3'
WUCOLS plant type: P A
Water Needs & WUCOLS Region:
Low - Region 2 
Mean Overall 
Appearance rating:
(1-5 Scale, 5 is highest)
3.9 - UC Davis 
Flowering Months
July-August - UC Davis

Growth and Quality Data

Click Here for Complete Data Set

Neomarica caerulea on 20%ET0 in October 2013 (no summer water). Photo: SK Reid.
Neomarica caerulea on 20%ET0 in October 2013 (no summer water). Photo: SK Reid.