This is of a more deciduous nature than Y. gloriosa, reclothing itself each spring more amply with foliage. In December, however, it is in fine form, and though it is a better flowering species than most of its genus, and to a fair extent valuable for its flowers, it will be more esteemed, perhaps, as a shrub of ornamental foliage. It came from Virginia in the year 1675.
The flowers are pretty, greenish-white, bell-shaped, and drooping: they are arranged in panicles, which, when sent up from strong plants, are, from their size, very attractive; but otherwise they are hardly up to the mark as flowers. The leaves in form are lance-shaped, concave, reflexed near the ends, and sharp-pointed. The colour is a yellowish-green, the edges are brown, and their substance is split up into curled filaments, which are sometimes 9in. or more long, and are blown about by every breeze. From these thready parts the species takes its name. It is seldom that this kind grows more than 4ft. high, but a greater number of offsets are produced from this than from any other of our cultivated Yuccas.
I know no better use for this kind than planting it on the knolly parts of rockwork, positions which in every way suit it, for it enjoys a warm, dry soil.
Y. f. variegata, as its name implies, is a form with coloured foliage. In the north it proves to be far from hardy, and therefore cannot be recommended for culture in the open garden. My reasons for mentioning it are that it is convenient to do so when the typical form is under notice, and that it is frequently spoken of as hardy. Subjects needing well selected positions, protection, and a mild winter in order to keep them alive from autumn to spring, can in no sense be considered hardy, even though they may be planted out of doors.
Flowering period, August to October.
Yucca Gloriosa.
Glorious Yucca, Adam's Needle; Nat. Ord. Liliaceæ.
A hardy evergreen shrub which has long been grown in England, but for all that is not often met with in private gardens. It is a native of South America, and was brought to our shores in 1596. The genus is remarkable for not flowering constantly in our climate, and also for slow growth; fortunately, both these drawbacks, if one may term them such, are counter-balanced by the handsome foliage of the various species, mostly of an evergreen and very durable nature, and also by the bold and symmetrical arrangement of the same. This Yucca flowers in the autumn, but it may be considered more especially a foliage subject, as the bloom is insignificant compared with the leaves and is not produced more than once in four years as a rule. The leaves assume their richest hues and become thoroughly matured about the end of the year; and when the ground is covered with a thick coat of snow, their rigid forms are amongst the very few of any note that can be seen. In any garden, no matter how large or how small, a Yucca imparts a style or character to it which scarcely any other subject can give. It may not be so easy to explain this, but the fact is recognised by the most casual observer at first sight. If I say the effect is tropical, noble, rich, and sometimes graceful, a partial idea of its ornamental qualities may be conveyed; but to know its value and enjoy it, it should be grown. The species under consideration has many forms, some differing rather widely from the type, so much so that these varieties are honoured with specific names. First may be given a brief description of the parent form.
It grows from 3ft. to 6ft. high, according to the more or less favourable conditions. These dimensions apply to blooming specimens; but shrubs, three to six years old, if they have never bloomed, may not exceed 1ft. to 2ft. in height, and about the same in diameter. The flowers, as may be gathered from the order to which the genus belongs, are lily-like, or bell-shaped; they are of a greenish white colour, arranged in lax clusters on stoutish stalks. The leaves are 12in. to 2ft. long, 3in. or more broad in their widest parts, concave or boat-shaped, sharp pointed, glaucous, sometimes slightly plicate, rigid, and leathery.