Article (website)  (2007)  
 
Roses rated moderately resistant (less than 10% foliage infected) may need limited spraying to maintain clean foliage.

Topaz Jewel is on the list of moderately resistant roses. [Note: hybrid rugosas do not tolerate the spraying of any material on their leaves.]

Book  (Aug 2002)  Page(s) 85.  
 
Topaz Jewel
Hybrid Rugosa
Rated 7.3

Article (newsletter)  (18 Sep 1999)  Page(s) 4.  
 
Parentage of Topaz Jewel: 'Golden Angel' x 'Belle Poitevine'.

Book  (Mar 1999)  Page(s) 58.  
 
R. rugosa hybrid. France (date and parentage not available). Description... this recent introduction offers fairly large, double blossoms similar to 'Agnes' in color... of questionable hardiness for northern gardens...

Website/Catalog  (4 Jan 1999)  Page(s) 17.  Includes photo(s).

Book  (1999)  Page(s) 223.  
 
Yellow Dagmar Hastrup (Moore 1989) [one of the 200 roses the author recommends]... wants annual rejuvenation through pruning...

Website/Catalog  (9 Jul 1998)  Page(s) 13.  Includes photo(s).
 
Topaz Jewel (MORyelrug) Hybrid Rugosa shrub. First repeat flowering yellow Rugosa rose. Very hardy... 3" fragrant flowers in clusters, spring to fall...

Book  (1997)  Page(s) 236.  Includes photo(s).

Book  (11 Jun 1993)  Page(s) 56, 57.  Includes photo(s).
 
Page 56: Parentage not given. Moore (USA) 1987 Description... [Verrier is not happy with this rose]... its semi-double pale yellow blossoms are rather nice... it is prone to excessive winter damage in [her] harsh climate...
Page 57: [Photo]

Book  (Apr 1993)  Page(s) 610.  
 
Hybrid Rugosa (Shrub), medium yellow, 1987, (MORyelrug; 'Gelbe Dagmar Hastrup'; 'Rustica 91'; 'Yellow Fru Dagmar Hartopp'); 'Golden Angel' x 'Belle Poitevine'; Moore, Ralph S.; Moore Miniature Roses; Wayside Gardens, 1987. Flowers medium yellow fading to cream, double (25+ petals), cupped, large, borne in sprays of 5-8 or more; moderate, fruity fragrance; foliage large, medium green, rugose, matt; slender, fairly long, brown prickles in variable sizes; fruit none; upright, bushy, spreading, vigorous growth; repeats.