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Evaluating Seedlings

Reprinted from The Australian and New Zealand Rose Annual, 1959

By R. T. Hamilton, Heidelberg, Vie.

Imagine for a moment that you intend to do what I have advocated on many occasions - you are going to raise a few roses from seed. The greatest thrill in rose-growing (or in the growing of many other subjects) is found in the endeavour to improve on the varieties already in cultivation.  Now, presuming that you have some seeds up (the varieties were cross pollinated in November. Seeds planted in June begin to germinate in August), and now, at the end of September the first tiny bud appears on a plant only a few inches tall. This tiny bud will unfold its petals at about the end of October, or in November, and it will give us some idea of the colour, number of petals, and presence or absence of fragrance. At this stage, we will have no idea of the vigour or lack of it that the plant will eventually have, nor of the length or stiffness of the stem. These factors, and the over-all factor of general all-round attractiveness, can only be found out after prolonged testing over several years.

It would never do to wait for our tiny plant to become a full-sized bush. We must hurry things up by budding small wood-buds or “eyes” of the newcomer on to specially prepared stocks. Some degree of selection must be undertaken at the first flowering stage so that only those which have some promise shall be persevered with. If the tiny first flower has less than sixteen or eighteen petals, it is never likely to be very double, and unless one likes single or semi-double blooms, or it has some outstanding characteristic, such as an unusual or very vivid colour, it may be discarded to make room for something showing more promise.  If the first flower shows twenty-five or thirty petals, it may well build up to a flower of thirty-five or more when a large plant is obtained.

When we get a “budded” plant well started, what qualities are we going to look for? To many people a rose bloom is a rose, and that is the beginning and the end of it. But the more discriminating will want to know what sort of a plant the bloom comes on. Does it come as the only good bloom of the season on a poor emaciated plant, or does it come as one of lots of good blooms on a vigorous, balanced, well-foliaged plant?

Notwithstanding, we grow roses for the beauty of the bloom. No matter how beautiful the foliage, a variety must bloom to find a place in our gardens. So we shall consider the desirable qualities of a rose bloom first. The highest type of bloom is one that has a number of petals, gracefully and symmetrically arranged around a well-formed centre.  While a few people like loose-petaled and single roses, our nurserymen, and executive members of the N.R.S. of Victoria report that nineteen out of twenty enquirers asking for a list of roses, stipulate “good double roses that won’t open too quickly”. It seems, then, that the first ideal we strive for is plenty of petals.

Now - colour. Some people like cream roses - some won’t look at them. Some like red - some yellow - some flame and so on. Since there is so much divergence of opinion regarding colour, I don’t think it matters what colour your new seedling is, so long as the colour is clear, bright and unfading.

What about fragrance? There is some difference of opinion as to whether fragrance is essential. We are dependent for our appreciation of things beautiful (or otherwise) on our five senses - sight, smell, taste, hearing and touch. Obviously the last three factors do not come into the present discussion, leaving sight and smell. It seems to me that those who glory in the sight of a good bloom and who do not appreciate the perfume are getting just one half of the possible pleasure, since they are using one instead of the two senses that they might be using. Yes - fragrance, while not absolutely essential, is a highly desirable attribute. 

Now we shall consider the type of plant which bears our many-petaled, colourful, fragrant bloom. It must first of all be a well-shaped, vigorous plant, say, after the style of Editor McFarland. Very tall, ungainly growers like Charles Mallerin, are not ideal, nor are very dwarf growers like Anne or Josephine Bruce. (The writer is getting seeds through the ground now of a cross between Charles Mallerin and Josephine Bruce, in the hope that he might get a good red flower on a bush midway between the two in growth).  The foliage must be ample in size, and well placed upon the stem. In some varieties, for example, President Herbert Hoover and Texas Centennial, the top leaf on the stem is rather too far beneath the bloom, thus giving a somewhat naked effect to an arrangement. In other varieties, the foliage is too small, or there may be too much space between each pair of leaves.

The stem on which the bloom is held must be of adequate length and must definitely be firm and strong enough to hold the bloom erect. Fortunately most of our modern varieties have good erect stems. Some, however, are rather short and some complaint has been made against Crimson Glory on this score. While the short stemmed varieties may look well in the garden, they are a big handicap for a show arrangement, or for the house.

Our new variety must be reasonably free of the two diseases that worry us most in Australia - mildew and black spot. Some varieties are more prone to either or both of these diseases than others. If the new variety is only so susceptible to these diseases that they can be readily controlled, then that is all that one can expect.

If your new variety measures up to the standards set out above, you have a good one. The difficulty lies not in raising a new variety, but in raising a good new variety.

Even with a good variety, you still have to make it known. The selection of a suitable name, plus the exhibiting of it at the shows and monthly meetings, may soon create a demand for it. On the other hand, many a good rose, particularly amongst those from overseas, may come without a flourish of trumpets, and may be overlooked. So your’ job is to see that it is not overlooked, by exhibiting it on every possible occasion.

There is one more little point I would like to stress, and that is the importance of commencing seed raising early in life. It may take six, seven or eight years from the cross fertilisation, through the testing period - working up a stock to the time when the variety goes on to the market.  Life is so short.

I wish I were twenty again!

 

 

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© 2009 Paul Hains
 
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