Rosa Banksia.—This very beautiful and very singular family more resembles in bloom a double Spiraea prunifolia, dwarf almond, or Chinese plum, than a rose. Its shoots are long, flexible, and graceful, and its foliage of a deep, polished green. In the flowering season, each shoot is like a pendulous garland of white, yellow, or rose-colored blossoms, small in size, and countless in number. It is not hardy here, or even in England; but it is one of the few once-blooming roses that are worth training on a greenhouse rafter. We have found it to succeed in a house without fire, with the protection of straw placed around it in winter. It will then bloom in the spring.
This rose is a native of China, and was named in compliment to Lady Banks. In Italy and the south of France it grows to perfection, climbing with an astonishing vigor, and covering every object within its reach. According to the French writer Deslongchamps, there was in 1842 a Banksia Rose at Toulon, of which the stem was, at its base, two feet and four inches in circumference; while the largest of the six branches measured a foot in girth. Its foliage covered a space of wall seventy-five feet wide, and about eighteen feet high; and it sometimes produced shoots fifteen feet long in a single year. It flowered in April and May; from fifty to sixty thousand of its double white blossoms opening at once, with an effect which the writer describes as magical. This remarkable tree was then about thirty-four years old. Deslongchamps also describes another Banksia Rose at Caserta, in the kingdom of Naples, which climbed to the top of a poplar sixty feet high, killed it with its embraces, and mantled its lifeless form with its rich green drapery, and its flowery garlands and festoons of white.
Banksian roses must not be shortened much; for, if they are, they will not bloom. The branches may be thinned out, however, to any degree necessary. The strong, thick shoots of overgrown proportions, and often but half ripened, which they sometimes make towards the end of summer, should be cut out, as they draw too much life from the blooming part of the plant. The same rule will also apply to many other species. These gross and immature shoots occur in many roses, both in the open ground and under glass; and, as they rarely produce good flowers, they should not be suffered to rob the rest of the plant of its nourishment.
The Double White Banksia is the best known, and one of the most beautiful. Jaunâtre Pleine is of a primrose yellow. Jaune Serin is of a bright yellow. Fortune's Banksia has double white flowers, much larger than usual with the species, and is greatly admired. The Yellow Banksia is of a bright yellow, small, and very double. Rosea is of a bright rose, double.
The Banksia is frequently used in greenhouses and conservatories as a stock for other climbing roses; and, in many cases, answers well.
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Rosa Rubifolia.—This native rose has been much improved by Mr. Feast and others, and now has many varieties, some of which are evidently hybrids. The single variety is in itself very attractive; blooming in clusters, which last a long time, and exhibit a pleasing diversity of shade, since the flowers grow paler as they grow old. For our own part, we prefer the parent to most of its more pretending offspring.
All of this family are held in great scorn by transatlantic cultivators. Perhaps the climate of England is unfavorable to them; perhaps national prejudice may color the judgment; or perhaps the fact that a less rigorous climate permits the successful cultivation of many fine climbing roses which cannot well be grown here may explain the slight esteem with which these coarse children of the prairies are regarded. Coarse, without doubt, they are, except those into which another element has been infused by hybridization, accidental or otherwise: and yet our climate forbids us to dispense with them.