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'Chivalry ®' rose Description
'Rittertum' rose photo
Photo courtesy of lanling
Availability:
Commercially available
Synonyms:
HMF Ratings:
27 favorite votes.  
Average rating: GOOD.  
ARS:
Red blend Hybrid Tea.
Registration name: MACpow
Exhibition name: Chivalry ®
Origin:
Bred by Samuel Darragh McGredy IV (1976).
Introduced in New Zealand by McGredy Roses International (New Zealand) as 'Chivalry'.
Introduced in United Kingdom by Mattocks Roses in 1977 as 'Chivalry'.
Introduced in Canada by Springwood Roses in 1990 as 'Rittertum'.
Class:
Hybrid Tea.  
Bloom:
Red, yellow reverse. Thick stems.  None / no fragrance.  up to 35 petals.  Average diameter 4".  Large, borne mostly solitary, high-centered bloom form.  Blooms in flushes throughout the season.  
Habit:
Tall, armed with thorns / prickles, spreading, upright.  Large, glossy, dark green foliage.  
Height of 47" to 6' 7" (120 to 200 cm).  
Growing:
USDA zone 7b and warmer.  Can be used for cut flower or garden.  Hardy.  Disease susceptibility: very disease resistant.  Spring Pruning: Remove old canes and dead or diseased wood and cut back canes that cross. In warmer climates, cut back the remaining canes by about one-third. In colder areas, you'll probably find you'll have to prune a little more than that.  Requires spring freeze protection (see glossary - Spring freeze protection) .  Can be grown in the ground or in a container (container requires winter protection).  
Breeder's notes:
Chivalry - Macpow. Nicknamed Power.
Patents:
New Zealand - Patent No: 109  on  4 Nov 1980
Application No: ROS060  on  9 Jun 1978
PVR Terminated: November 4, 1991.
 
United States - Patent No: PP 4,281   VIEW USPTO PATENT
Notes:
According to the New Zealand Plant Variety Rights (PVR) web page, application for a PVR Grant for this rose was made in 1978 and granted in 1980 (PVR Grant No. 109).
[Source: L'Haÿ-les-roses Label]