Booklet  (2008)  
 
An Information List of all Varieties. p6
1982. Derek Nimmo - Macwhenu. Nicknamed Whenuapai

Seedling books Books NZ 1972-85. 1978-1979 p16
1975. 774. Derek Nimmo Whenuapai. (Fragrant Cloud x Crisp)....List of distributors.

Seedling books Books NZ 1972-85. 1981-1982. p5
Derek Nimmo MACwhenu. First introduced U.K. 1981.

Seedling books Books NZ 1972-85. 1982-1983 p10
1975. 774. Derek Nimmo Whenuapai. (Fragrant Cloud x Crisp)....List of distributors.

Book  (2007)  Page(s) 119.  
 
'Macwhenu', HT, ob, 1981, McGredy, Sam IV, (Derek Nimmo), [seedling X seedling] ... description

Book  (1989)  Page(s) 126.  Includes photo(s).
 
'Derek Nimmo' is described by its hybridizer Sam McGredy IV, as having some of the crispest and firmest petals he's seen. The color is clear; the bloom slightly fragrant.

Book  (1986)  Page(s) 73.  Includes photo(s).
 
When 'Derek Nimmo' is in its prime, it is breathtakingly beautiful. It is all the things an exhibitor dreams about. The flower is held on very erect stems, the bloom is noble with a perfect bud form, the colour is crisp and clear. I've seen it so often like that on Mattock's nursery in Oxford, England, and it is always like that in my rose-breeding glasshouse. When the bloom opens, however, the form goes with a somewhat confused centre, although the colour remains pleasing. Elsewhere in this book I express my personal dislike of powdery mildew. There seem to be different strains of it in different countries, as a variety like Die Welt suffers badly here, but not elsewhere. The same goes for 'Derek Nimmo' which seems to contract mildew early in our season here, but nowhere else. So it's not one of my personal favourites, although I can see it popping up on the showbench. Plant, hardiness, and resistance to all the other myriad of pests and diseases is above average, probably due to the 'Fragrant Cloud' in its parentage. From a rose-breeding standpoint it is interesting to note that its pollen parent is an unnamed seedling of mine nicknamed Maccrisp. Just as you get to know your children's idiosyncrasies over the years, I've learnt a lot about Maccrisp, what it will breed and what it will not breed. The crisp part of the nickname is obvious - the petals are crisp and firm, a character it transmits to all its offspring. Its parentage is Picasso crossed with an unnamed Poulsen floribunda, proving that it is possible to get from a small-flowered floribunda to a large HT. in two generations. I really started to use Maccrisp as a parent because of the crispness and the Picasso hand-painted blood.. However, I've discovered two more important characteristics it transmits rather easily. The more mundane is strong blackspot resistance. What excites me is its ability to give red HT.'s without a trace of bluishness, even in the old flower. Fragrant Cloud can go a horrible colour as it goes over, so one would expect Derek Nimmo to do the same, but thanks to Maccrisp, it doesn't.

'Derek Nimmo'. HT. Raised by Sam McGredy in New Zealand in 1981. Bred from 'Fragrant Cloud x [Unnamed Poulsen seedling x Picasso]

Book  (1982)  
 
p190. Pearson. The 1981 Festival and National Show.
New roses on view, for instance, included such large flowered bush varieties as the following: 'Derek Nimmo', salmon and pearl, raised by Sam McGredy in New Zealand and available here from Mattock.

p203. Janet Browne. the Autumn Show 1981.
Mattock's included most of their 1981 introductions..... 'Derek Nimmo', cherry pink with silvery reverse.

Book  (1981)  Page(s) 64.  
 
New Zealand Rose Registrations 1980. 'Derek Nimmo' (MACwhe). HT pink blend. Raiser : Sam McGredy

Book  (1978)  Page(s) 100.  
 
Sam McGredy. A Hand-Painted Family Tree.
Both MACwhenu and MACkent are true Hybrid Teas. Both are bicolours; both are fragrant; both look vigorous and healthy; the colours in both are blended in an unusual way.

p101. Breeding chart which shows the 1975 date and the parentage of MACwhenu as 'Fragrant Cloud' x MACrisp