in the year it may be had fit for use by the first of June; but plants a year old or so, stiff, strong, and well hardened off for planting out at the end of May, are the best. It would be desirable to raise an annual stock, as it is almost as useful for room-decoration as for the garden. Native of New Holland.
ACANTHUS.
These stout and hardy herbaceous plants are of the greatest importance in the subtropical garden or the pleasure-ground, their effect being very good when they are well established. They thrive in almost any soil, but attain their greatest luxuriance and beauty in deep warm ones. The best uses for these species are as isolated tufts in the grass, in the mixed border, or in picturesque groups with other hardy subjects. In all cases they should be placed in positions where they are not likely to be disturbed, as their beauty is not seen until they are well established. All are easily propagated by division. Few herbaceous genera may be made more useful than this.
*Acanthus hirsutus.—This uncommon species has a narrow spiny leaf, more in the way of Morina longifolia than the ordinary Acanthuses, and is dark green in hue. The leaves grow to a length of about 15 ins. or 16 ins. in ordinary soil. Being distinct, it may be worth growing, though in point of character or importance it is inferior to the larger kinds. South of Europe.
*Acanthus latifolius.—The leaves of this are bold and noble in outline, and the plant has a tendency, rare in some hardy things with otherwise fine qualities, to retain them till the end of the season without losing a particle of their freshness and polished verdure. In fact, the only thing we have to decide about this subject is, what is the best place for it? Now, it is one of those things that will not disgrace any position, and will prove equally at home in the centre of the mixed border, projected in the grass a little from the edge of a choice shrubbery, or in the flower-garden; nobody need fear its displaying anything like the seediness which such things as the Heracleums show at the end of summer. I should not like to advise its being planted in the centre of a flower-bed, or in any other position where it would be disturbed; but in case it were determined to plant permanent groups of fine-leaved hardy plants, then indeed it could be used with great success. Supposing we have an irregular kind of flower-garden or pleasure-ground to deal with (a common case), one of the best things to do with this Acanthus is to plant it in the grass, at some distance from the clumps, and perhaps near a few other things of like character. It is better than any kind of Acanthus hitherto commonly cultivated, though one or two of these are fine. Give it deep good soil, and do not grudge it this attention, because, unlike tender plants, it will not trouble you again for a long time. Nobody seems to know from whence it came. Probably it is a variety of Acanthus mollis. The plant varies a good deal; I have seen specimens of it about a foot high, with leaves comparatively small and stiff and rigid, as if cast in a mould, by the side of others of thrice that development, and of the usual texture.
*Acanthus longifolius.—A fine, distinct, and new species from Dalmatia and S. Europe, 3½ ft. to 4 ft. high, distinguished from A. mollis (to which it is allied) by the length and narrowness of its arching leaves. They are about 2½ ft. long, very numerous, of a bright green colour, growing at first erect, then inclining and forming a sheaf-like tuft, which has a very fine effect. The flowers are of a wine-red colour, becoming lighter before they fall. A specimen in the gardens of the Museum at Paris, in four years after planting, had twenty-five blooming-stems rising from the midst of a round mass of verdure nearly 2½ ft. in height and width. This would be very effective on the undulating and picturesque parts of landscape-gardens. It does not run so much at the root as A. mollis. It seeds more freely than the other kinds, and may be readily increased by seeds as well as by division. Its free-flowering quality makes this species peculiarly valuable, while it is as good as any for isolation or grouping.
*Acanthus mollis.—A well-known old border-plant from the south of Europe, about 3 ft. high, with leaves nearly 2 ft. long by 1 ft. broad, heart-shaped in outline, and cut into angular toothed lobes. The flowers are white or lilac, the inflorescence forming a remarkable-looking spike, half the length of the stem. Well adapted for borders, isolation, margins of shrubberies, and semi-wild places, in deep ordinary soil, the richer the better. Increased by division of the roots in winter or early spring.
*Acanthus spinosissimus.—This is in all respects among the finest of thoroughly hardy “foliage-plants,” growing to a height of 3½ ft., and bearing rosy-flesh-coloured flowers in spikes of a foot or more in length. It is perfectly hardy, very free in growth, and is quite distinct from any of the other species, forming roundish masses of dark-green leaves, with rather a profusion of glistening spines, by which it is known immediately from its relatives. As a permanent object, fit to plant in a nook in the pleasure-ground or on the grass, associated with the nobler grasses or other plants, there is nothing to surpass it. I know of no hardy foliage-plant so thoroughly neat in its habit at all times. It does not often flower; and if it should throw up a spike, it will perhaps be no loss to cut it off, as its leaves are its best ornament, though the flowers too are interesting. Never at any time does it require the least attention; it will stand any exposure; and is, in a word, invaluable as a hardy ornamental plant. It will thrive best in good and deep soil. South of Europe.