Book  (Mar 1991)  Page(s) Vol 4, No 1.  
 
Hazeldean Rose: A Rare Segregation
Percy H. Wright
For the fourth [seedling of the cross] I chose another Scottish name (since Spinosissimas are commonly known as "Scotch" roses), Hazeldean, a name that will be familiar to those who read the poetry of Robert Burns. Hazeldean was the prize of them all.

Article (misc)  (5 Jun 1977)  
 
Personal correspondence - Percy Wright to Walter Schowalter

I have several very new roses of which I am proud. One is a seedling with single yellow flowers to pollen of Hazeldean. It is double almost as double as Hazeldean and has normal pistils, not the aborted type that Hazeldean inherited from Persian Yellow. It blooms a week earlier than Hazeldean, which means more time before the curculio appears. I'll name it LOTHIAN. Another is a single yellow Altai type, the deepest yellow descendant of Hazeldean I have ever seen. I don't doubt that it's fertile too. It will mostly replace YELLOW ALTAI, which has hips and seeds, but the seeds refuse to germinate. I have named it LOMOND. I figure that Scotch roses should have Scottish names. Another new rose is a substitute for Austrian Copper a single that blends red & yellow in a very attractive way. It is (Gallica x laxa) x Hazeldean. It won't be fertile, but, unlike Austrian Copper, will be free of blackspot, and probably a bit hardier."

Article (misc)  (20 Feb 1977)  
 
Personal correspondence Percy Wright to Walter Schowalter:
I had a letter a few days ago from the Meilland Nursery in S. France, to which I had sent budwood of my Hazeldean rose 1 1/2 years ago. The letter said that "Hazeldean rose is already in commerce." This means that someone to whom I supplied it, with the promise they'd kept it to themselves, has cashed in on it. Either that, or the plant at the merit trials in Morden was robbed of budwood by some visitor from Holland. Anyway, it seems that I have been done out of some thousands of dollars. Of course, I should have sold the rights to Hazeldean many years ago. I originated it about 1943."

Newsletter  (1975)  Page(s) 6, Summer 1975.  
 
In the article "Breeding Yellows," by Percy H. Wright, Saskatchewan, Canada:
My yellow rose Hazeldean was originated by putting pollen of Persian Yellow on the "Scotch" rose, the subspecies Altaica, which normally blooms a week or more before Persian Yellow does. I was able to make the cross by bringing in pollen from a southern source. The flowers of Hazeldean vary a good deal in size, but the larger ones are a bit larger than the flowers of Persian Yellow, and I consider them of better form and certainly of better scent. They are sufficiently fertile that in some years about one flower in ten will set seed. The pollen is much, much more fertile than that of Persian Yellow.

Article (misc)  (2 Oct 1967)  
 
Personal correspondence - Percy Wright to Walter Schowalter:
I'll enclose some further rose seed for you to experiment with. It will be Bertha x Hazeldean. Bertha is a rugosa-blanda hybrid, F2, that leans to rugosa, but grows nine feet high. Hazeldean is my prize yellow rose, altaica x Persian Yellow. Thus the seeds will give you triploid roses. Stratify them at once.

Article (misc)  (1960)  Page(s) 114-118.  
 
SINCE 1932 when I first placed pollen on Rosa macounii, one of the three native rose species of Saskatchewan, on pistils of the hardiest of the Hybrid Rugosa, Hansa, I have been concerned with the inheritance of color in roses.....

Soon after my original cross, I put pollen of Harison's Yellow on pistils of R. macounii and got a number of seedlings. These were pollen-fertile in spite of the fact that one parent is tetraploid and the other diploid. One of the seedlings was a salmon-pink bicolor that combined the yellow of the one parent with the pink of the other, although both colors were relatively pale. The remainder were pure white.

That pure white appeared in these seedlings was unexpected, for surely one would have expected all these seedlings to be a salmon-pink. However, apparently, Harison's Yellow is heterozygous for its yellow color, and R. macounii heterozygous for its pink color. These white seedlings, as it chanced, did not inherit yellow from the one parent, or pink from the other and so had to be white....

Later, I placed pollen from Harison's Yellow on pistils of Rosa spinosissima altaica, the pure white rose from the Altai mountains of central Asia, and from this cross I got many new varieties. They ranged from pure white through various tints of pale yellow to the definite yellow of which two were eventually named Hazeldean and Yellow Altai. In these, the yellow is just a mite less deep than in Harison's Yellow. These two roses probably represent the maximum for yellow that can be expected to descend from the stock of yellow genes in Harison's Yellow to any progeny.

Article (misc)  (5 Jul 1949)  
 
Personal Correspondence Percy Wright to Frank L. Skinner.

My best yellow rose, the one you saw last July, puzzles me. It is too good for an Altaica-Harison's Yellow cross, with a long bud suggesting H.T., a perfect form of half-opened flower, and the scent of the tea rose. the cross that produced it was made in 1938, and I don't remember using any yellow HT pollen then. Besides, if a yellow HT was in its ancestry, it would not be 100% hardy (as it is), and if Persian Yellow was the parent, surely it would not be completely fertile (as it is), or have an agreeable scent. It's a mystery, but it's a wonderful rose. I named it Hazeldean, - the other name, Annie Laurie, having been used before."

Book  (1949)  Page(s) 147-149.  
 
In "New Varieties for the Extreme North," by Percy H. Wright, Moose Range, Saskatchewan, Canada:
Hazeldean is another of the seedlings of R. spinosissima altaica pollinated by Harison's Yellow...It is not so floriferous as either of its parents, or as its sister Yellow Altai, and it blooms later than either. The flowers are larger than those of Harison's Yellow, a feature doubtless inherited from the Altai parent. The color is slightly paler than Harison's Yellow and the petals are as numerous if not more so. The individual flowers vary considerably in size and form, but all have better form than Harison's Yellow, and the best have buds with a certain amount of the high pointing that we think of as a characteristic of some of the most modern hybrid teas. This variety is, to date, the only rose that is at once double, definitely yellow, and completely hardy in temperatures to 60 degrees F. below zero or lower. It has the fault of allowing the outer petals of the flowers to discolor, and an occasional bloom does not open at all. There is a chance that this variety will supersede Harison's Yellow, even in areas where the latter is satisfactorily hardy, on account of its better form and greater size of flower....

Website/Catalog  (1949)  
 
"HAZELDEAN* - same descent, [Altaica x Harison's Yellow] and also 100% hardy. the individual flower is wonderful, full double, of good form, larger and of better texture than Harison's Yellow, a true yellow, but so sparsely produced that we have decided to recommend it only for breeding purposes."

Percy Wright Catalogue - Hardy and Semi-Hardy Roses - ca 1949 p. 8
square brackets - mine