Website/Catalog  (1929)  Page(s) 63.  
 
Bourbon Roses
The Bourbons are desirable old-fashioned Roses closely related to the Chinas. Many of them bloom continuously but a few are once-blooming only. There are both climbing and bedding types. Our list includes two of the finest old sorts and interesting, modern varieties. 
Parkzierde. (P. Lambert, 1909.) Fiery crimson- scarlet flowers, double, rather small, and notably fragrant. Strong-growing and very hardy plant.
Once-blooming only, but very profuse at that time. $1 each.

Website/Catalog  (1926)  Page(s) 43.  
 
Bourbon. Semi-Climbers. Gallica x Bourbon. Parkzierde (P. Lambert 1909). Size and form like the most beautiful HTs. Vigorous, totally hardy, once- but very floriferous bloom, opulent. Mostly solitary, long stems, large, flat cup form, scarlet-crimson, fragrant.

Website/Catalog  (1926)  Page(s) 55.  
 
Parkzierde Gallica x Bourbon. (Geschwind 1909). Vigorous, large, cupped, scarlet-crimson, fragrant HT-blooms. Extraordinarily ostentatious shrub.

Book  (1924)  Page(s) 72.  
 
Excellent garden roses with wild rose character...
Hybrid bourbons...
Parkzierde, 1909, introduced by P. lambert, scarlet-red, flat cup form, large, vigorous, shrub-like; once-blooming, excellent.

Book  (1924)  Page(s) 49.  
 
Hybrid chinas...The petals are firmer, more resistant and the blooms therefore last much longer on the plant. These good cahracteristics which make them to valuable park roses have been utilized again a long time ago by Peter Lambert in Trier. His beautiful roses Parkzierde and Trierisch Kind are new representatives of this group.

Magazine  (1909)  Page(s) 183-184.  
 
M. Peter Lambert, rosiériste à Trèvessur-Moselle (Allemagne), annonce également un grand nombre de nouveautés pour cette automne. Malheureusement, nous ne pouvons en donner les descriptions, n'en ayant pas la traduction en langue française. … Parmi les Rosiers destinés pour les parcs, haies, etc., il y a : .. Parkzierde .. …Toutes ces dernières variétés nous paraissent être des polyanthas ou de leurs hybrides.