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'Karl Foerster' rose References
Book  (2006)  Page(s) 36.  
Karl Förster. Spin. Good reliable rebloom. Moderate fragrance. Habit [diagram] 2. Kordes, 1931. [Provenance: Hortico]. Rather like a white version of 'Stanwell Perpetual' with larger foliage and little scent, this charming rose blooms for many months of the year, yet is almost unknown among growers of old roses, despite its wide availability in North America.
Book  (Aug 2002)  Page(s) 52.  
Karl Forster
Not rated
Book  (Jul 1998)  Page(s) 36.  
Karl Förster. A cross between 'Frau Karl Druschki' and Rosa pimpinellifolia 'Grandiflora', with pointed buds opening into double pure white flowers with a slight scent. The growth is vigorous, up to 7ft. in height, with attractive greyish-green foliage showing signs of Pimpinellifolia influence. It should, I suppose, be considered together with the 'Fruhlings' series, but it is rather different in character and is recurrent flowering. Bred by Kordes (Germany), introduced 1931.
Article (newsletter)  (1997)  Page(s) 53.  
developed in Germany by Wilhelm Kordes… a Rosa pimpinellifolia hybrid - named in honour of the renowned plantsman - released in 1931. A cross between the Altai [R. pimpinellifolia 'Grandiflora' (syn. R. spinosissima altaica) rose and the Hybrid Perpetual 'Frau Karl Druschki', it bears souble cream-coloured flowers throughout summer.
Book  (Apr 1993)  Page(s) 283.  
Karl Förster Hybrid Spinosissima, snow-white, 1931, 'Frau Karl Druschki' x R. spinosissima altaica; Kordes. Description.
Book  (1988)  Includes photo(s).
Page 103. Roses as Hedges. ....Some of the modern shrub roses are ideal especially those of upright stance such as Karl Forster and....

Page 228: Pimpinellifolia Hybrid. Kordes (Germany) 1931. Parentage: 'Frau Karl Drushcki' x R. pimpinellifolia altaica. A rose that should be much better known. Its large, fully double, pure white blooms are rather ragged when fully open and are produced on a dense, upright shrub with plentiful greyish-green foliage. Repeat flowering. Tolerant of poorer soil. Suitable for hedging. Slight fragrance. suitable for pots. Teolerant fo shade. 5' x 4'. 1.5m x 1.2m.

Page 229: [Photo]
Book  (1987)  Page(s) 216.  
Kordes. R. spinosissima altaica x 'Frau Karl Druchski'
Book  (Dec 1985)  Page(s) 143.  
(Pimpinellifoliae) 'Karl Förster', Kordes, Germany, 1931. 'Frau Karl Druschki' x R. pimpinellifolia altaica. A showy shrub. Large, semi-double flowers with prominent golden stamens. Bushy, greyish light green foliage… intermittent flowers produced later in summer. 5' x 4'
Website/Catalog  (1982)  Page(s) 21.  
Karl Forster (Hybrid Spinosissima) Large, double, white, scented flowers borne amid profuse, wrinkled, light green foliage. 1931. (S) 7 x 4’.
Book  (1976)  Page(s) 137.  
Roy Shepherd. The ABC's of Hybridizing.
Undoubtedly rose breeding is somewhat of a gamble.....R. spinosissima altaica, for example, has intrigued hybridists for many years as it possesses several qualities that commend it as a parent. Several well qualified breeders have endeavoured to combine its extreme hardiness and good plant habits with the remontant qualities of our modern roses. To the best of the writer's knowledge the combination has been successfully effected but twice. These two exceptions to the usual failures are the white Karl Forester created by Kordes, ('Frau Karl Druschki' x R. s. altaica) and our 'Golden Wings' ('Sister Therese' x R. s. altaica). Both are hardy and both repeat generously. I'll confess that several hundred similar crosses were made before 'Golden Wings' resulted and I assume that Kordes also failed many times before he achieved success.
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