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Canyon Snow Pacific Hybrid Iris

Iris 'Canyon Snow'

Iris 'Canyon Snow' Photo: SK Reid.
Iris 'Canyon Snow' Photo: SK Reid.


Possibly the best performer of the Pacific Coast Hybrid irises, Canyon Snow is a prolific spring bloomer with sturdy evergreen foliage. Though some tip death happens as the heat of the summer wears on, this is a fairly typical habit of irises. In our open sun conditions, the plants performed significantly better on the moderate irrigation level (60% of ETo) than all other levels but were acceptable on low, showing it would probably perform well with part shade on low irrigation. In the demonstration gardens where this plant was grown by UC Master Gardeners, cooler coastal sites, or Central Valley sites where plants received partial shade performed best.

Our only mortality in the trials was on the high irrigation treatment in August. Like many California natives, too much water in the hottest time of year may be detrimental.

Basic Info

Submitted by: UC Davis Aboretum
Trial Exposure: Sun
Year evaluated: 2009
Height & Width
(after 2 years):
19" x 37" - UC Davis
Reported Height & Width
(at maturity):
1-2' x 2-3'
WUCOLS plant type: P N A
Water Needs & WUCOLS Region:
Medium - Region 2 
Mean Overall 
Appearance rating:
(1-5 Scale, 5 is highest)
3.9 - UC Davis 
Flowering Months
March-May - UC Davis

Growth and Quality Data

Click Here for Complete Data Set

Close up of Iris 'Canyon Snow' Photo: SK Reid.
Close up of Iris 'Canyon Snow' Photo: SK Reid.