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'Sulphur Rose' Description
'<i>Rosa hemisphaerica</i> 'Flore-Pleno'' rose photo
Photo courtesy of Christina i Taxinge, Sweden
Availability:
Commercially available
HMF Ratings:
100 favorite votes.  
ARS:
Medium yellow Species.
Exhibition name: R. hemisphaerica
Origin:
Bred by Unknown (before 1516).
Discovered by Charles de L'Écluse (Netherlands, 1601).
Introduced in United Kingdom by Nicholas Leat / Lete in before 1629 as 'Double Yellow'.
Class:
Species Cross.  
Bloom:
Yellow.  None to mild fragrance.  Large, very double, button-eye, globular bloom form.  Once-blooming spring or summer.  
Habit:
Upright.  Dark green foliage.  5 to 9 leaflets.  

Height: 47" to 6' (120 to 185cm).  Width: up to 4' (up to 120cm).
Growing:
USDA zone 6b through 9b (default).  Blooms tend to ball in wet weather.  drought resistant.  prefers dry climates.  
Patents:
Patent status unknown (to HelpMeFind).
Ploidy:
Tetraploid
Notes:
Robert Buist regarded R. lutea and R. sulphurea as the same, so please refer to both for more information. Maybe a synonym of 'Sulfureux' by Ducher. The date of this rose before 1615 is based upon the statement in The Botanical Register that "The flower is well drawn in the old Hortus Eystettensis," which was first published in 1613. See photo uploaded 15 Feb 2009.
 
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