Article (website)  (1982)  Page(s) 17.  
 
Frühlingsduft (Hybrid spinosissima)  Vigorous, healthy plant with abundant, mid-green foliage. Flowers, double, lemon-yellow flushed pink and highly scented. 1949. W.  •  H. (S) 6 x 5’. 

Book  (1976)  Page(s) 73.  
 
'Frühlingsduft' (W. Kordes, 1949) = R. spinosissima var. altaica X 'Joanna Hill' (Hybrid Tea); bushes up to 2 meters tall, dense, large blooms, full double, pink with yellowish center, floriferous, very fragrant.

Book  (1964)  Page(s) 217.  
 
Frühlingsduft, spinosissima hybrid. full, H. T. type blooms, white with pink tints. Blooms early to mid-season. Up to 13 x 13 ft. Long, arching branches. Free flowering.

Book  (1961)  Page(s) 127.  
 
'Frühlingsduft', W. Kordes' Sons, 'Joanna Hill' x R. spinosissima v. altaica, 1949, very double, very large, rosy yellow to pure golden yellow, bushy and floriferous, 1,5 m., very fragrant, n=28

Book  (1953)  Page(s) 122.  Includes photo(s).
 
Frühlingsduft, rosy yellow. Fragrant shrub, blooming in May.

Book  (1953)  Page(s) 146.  
 
Frühlingsduft, Kordes' Söhne 49, spinosissima, very double, yellow-pink, small clusters, 12 cm, very strong fragrance, very early, -30^o C, Upright broad shrub. Hedges, solitaire. Tight against cats. Floriferous. 2 m.