Book  (Dec 1998)  Page(s) 335.  
 
Karoo Rose (POUlkaros, 'Karoo') Cluster-flowered/Floribunda. Poulsen (Denmark) 1988. Parentage: Seedling x Seedling... The most arid part of South Africa is called the Karoo... dark orange-red blooms with a crimson color reminiscent of a Karoo sunset...

Book  (Apr 1993)  Page(s) 284.  
 
'Karoo'. F. or. 1988. (POUlkaro; Karoo Rose). Seedling x Seedling. Poulsen Roser ApS; Ludwig's Roses, 1988. Flowers orange-red, aging watermelon-pink, dbl. (32 petals), medium, borne in sprays of 1-15; no fragrance; foliage medium, medium green, very hardy; prickles concave, yellow-brown; neat, medium, densely branched growth.