Commercially available

• Gén. Jacqueminot (hybrid perpetual, Roussel 1853)
• Général Jacqueminot
• Jack Rose

72 favorite votes.  
Average rating: GOOD.  

Red blend Hybrid Perpetual.
Registration name: Général Jacqueminot (hybrid perpetual, Roussel 1853)

Bred by Charles Rousselet / Roussel (France, before 1853).
Introduced in Australia by Evandale Nursery in 1860 as 'Général Jacqueminot'.

Hybrid Perpetual.  

Crimson - cerise, ages to deep pink .  Strong fragrance.  24 to 30 petals.  Average diameter 3.5".  Large, very double, cupped, globular, nodding or "weak neck" bloom form.  Blooms in flushes throughout the season.  

Tall, armed with thorns / prickles, bushy.  Light green foliage.  3 to 5 leaflets.  

Height: 39" to 7' (100 to 215cm).  Width: up to 6' (up to 185cm).

USDA zone 5b and warmer.  Plant in partial shade for best color.  Disease susceptibility: susceptible to Mildew, susceptible to rust .  Remove spent blooms to encourage re-bloom.  

Tetraploid

For clarification of parentage, see References.
'Triomphe d'Amiens', 'La Brillante', 'Richard Smith', 'Mrs. Cleveland' are not synonyms in the modern sense of 'Général Jacqueminot', but distinct roses. They were deemed synonyms in the 1880s along with a number of others, as they were considered quite similar, and not worthy of separate listing and propagation.

Sam Kedem says this rose is almost thornless. Other people say it's definitely not thornless. These distinctions might be due to the "synonym" decision in the 1880s.