Commercially available

• Double Yellow (Foetida, Williams, 1820)
• Double Yellow Scots Rose
• Hoog's Straw-coloured
• Jaune de William
• "Kaisaniemi"
• "Namdalsrosen"
• New Double Yellow
• New Double Yellow Sweet Brier
• Old Double Yellow Scots Rose
• Pimpinellifolia (Double Yellow)
• Pitmaston Double Yellow Briar
• Prince Charlie's Rose
• Williams' Double Yellow

77 favorite votes.  

Medium yellow Hybrid Foetida/Lutea.
Registration name: Williams' Double Yellow
Exhibition name: Williams' Double Yellow

Bred by John Williams (1820s) (United Kingdom, 1820).

Hybrid Spinosissima, Shrub, Species Cross.  

Butter-yellow, green pointel.  Mild fragrance.  Average diameter 2".  Small, double (17-25 petals), cupped, globular bloom form.  Once-blooming spring or summer.  

Height: 4' (120cm).  Width: 4' (120cm).

USDA zone 6b through 9b (default).  Produces decorative hips.  shade tolerant.  Do not prune.  Resist the urge to prune this rose too heavily -- it doesn't like it!.  

Triploid

Parentage uncertain, see References.

The Swedish Rose Society recommends Williams' Double Yellow for northern Sweden.

Dag from Norway says this rose is called 'Namdalsrosen' there. In Finland, the found rose "Kaisaniemi" (KESKAS-857) was identified as 'William's Double Yellow'.

Ploidy information supplied by David Zlesak.