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'Rosa setigera f. inermis E.J. Palmer & Steyerm.' rose Description
'<i>Rosa setigera</i> Michaux' rose photo
Photo courtesy of jedmar
Availability:
Commercially available
HMF Ratings:
85 favorite votes.  
Average rating: EXCELLENT-.  
ARS:
Deep pink Species.
Exhibition name: R. setigera
Origin:
Introduced by Unknown in 1810 as 'Rosa setigera Michaux'.
Introduced in Australia by Camden Park in 1850 as 'Rosa rubifolia Paul synonym'.
Class:
Species / Wild.  
Bloom:
Deep pink, white undertones.  White, pale pink, medium pink to dark pink blooms.  Sweet fragrance.  Average diameter 2.5".  Medium, single (4-8 petals), in small clusters bloom form.  Once-blooming spring or summer.  Small, leafy sepals, rounded buds.  
Habit:
Tall, arching, climbing, suckers on its own roots, thornless (or almost).  Large, light green foliage.  3 to 5 leaflets.  

Height: 5' to 20' (150 to 610cm).  Width: up to 6' (up to 185cm).
Growing:
USDA zone 3b and warmer.  Very hardy.  Needs little care; relatively disease-free and quite hardy.  
Patents:
Patent status unknown (to HelpMeFind).
Ploidy:
References vary
Parentage:
If you know the parentage of this rose, or other details, please contact us.
Notes:
Red globular hips - but only if both male and female plants are present. Rosa setigera is the only rose that is cryptically dioecious - - meaning there are male-only and female-only plants that generally look alike but whose sex is determinable microscopically, by counting the number of flowers per inflorescence (male plants have more flowers, bees are attracted to its pollen) or by looking for hips (hips are found only on female plants, pollen is sterile). More information from the Canadian Biodiversity Project at McGill University.

The US Dept. of Agriculture recognizes only two varieties of the Northern American species Rosa setigera Michaux:
Rosa setigera var. setigera, which now also includes the thornless Rosa setigera var. serena; and
Rosa setigera var. tomentosa which apparently has downy white hairs.

Other authorities (such as the International Organization For Plant Information) recognize, in addition:
Rosa setigera f. alba, a form with a white bloom;
Rosa setigera f. inermis, a form without prickles;
Rosa setigera var. glabra; and
Rosa setigera var. pubescens.

Horticultural selections include the thornless 'Serena' and a semi-double, striped form. In 1840, a double form known as Kentucky Multiflora was described.
The synonym Rosa rubifolia should not be confused with Rosa rubrifolia, better known as Rosa glauca (Erich Unmuth, Vienna Austria).
 
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