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Snow-In-Summer

Cerastium tomentosum

Cerastium tomentosum in May 2013. Photo: SK Reid.
Cerastium tomentosum in May 2013. Photo: SK Reid.

Summary

Snow-in-summer did not turn out to be as hardy a plant as we had hoped.  The average overall appearance of these plants was barely acceptable at all irrigation levels during the second year.  Plants sent out runners under the bark that put up new remote growth, but the main clumps often showed old interior leaves and died out in the center leaving a donut effect. Other plants died off completely on one side for no apparent reason.  Growth and overall appearance were not significantly different between irrigation treatments.  The only county garden to recommend it was coastal San Diego, and they had to cage it to keep it from rabbit browsing.  It just did not prove to be a vigorous spreader or a consistently attractive clumping plant. These results have caused us to question its inclusion on the UC Davis Arboretum All-Stars list.

Basic Info

Submitted by: UC Davis Arboretum
Trial Exposure: Sun
Year evaluated: 2013
Height & Width
(after 2 years):
7.5" x 35" - UC Davis
Reported Height & Width
(at maturity):
.5-1' x .5-1'
WUCOLS plant type: Gc A
Water Needs & WUCOLS Region:
Low - Region 2 
Mean Overall 
Appearance rating:
(1-5 Scale, 5 is highest)
3.1 - UC Davis
Flowering Months
November, December, March-May - UC Davis

Growth and Quality Data

Click Here for Complete Data Set

Cerastium tomentosum in August 2013 on 60% ET0 showing the donut effect. Photo: SK Reid.
Cerastium tomentosum in August 2013 on 60% ET0 showing the donut effect. Photo: SK Reid.