Hardy Perennials and Old Fashioned Flowers Part 26

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This seems to be a less known or newer variety. If the name has reference to the colour of the foliage, it is not inappropriate. The bold leaves are a dark green, shading to a bronze, then a purple, the whole having a soft downy effect. It is a charming kind.

Cultivation and flowering period, the same as for the _Heuchera_.

Heuchera Ribifolia.

CURRANT-LEAVED HEUCHERA; _Nat. Ord._ SAXIFRAGACEae.

This is another dwarf kind, producing such leaves as the name denotes.



Of this species the only useful feature for a garden seems to be its habit of neatly carpeting the ground under deciduous trees. It has also a remarkably fresh appearance during winter.

Cultivation and flowering period, as for other _Heucheras_.

Heuchera Richardsoni.

RICHARDSON'S HEUCHERA; _Nat. Ord._ SAXIFRAGACEae.

A taller variety than _H. Drummondi_. The most striking distinctions are the pale green colour of the young leaves contrasting with the bronzed appearance of the older ones, and the larger size of its flowers, which, however, are green.

Cultivation and flowering period, as for other species.

Houstonia Coerulea.

BLUETS; _Nat. Ord._ GENTIANACEae.

[Ill.u.s.tration: FIG. 52. HOUSTONIA COERULEA.

(Natural size.)]

Hardy and evergreen. This pretty little s.h.i.+ning plant never exceeds a height of 3in. Like most species of this order, both flowers and foliage have much substance and endure for a long time in perfection, but its neat form and bright parts most commend it--it almost sparkles in both leaf and flower. This species, as implied by the specific name, bears a blue flower, but there is a variety (_H. c. alba_ or _H. albiflora_) which bears white flowers, from a specimen of which the ill.u.s.tration (Fig. 52) is drawn, and, as the colour of the flower is the only dissimilarity, a description of the typical form will in all other respects apply to both.

The flowers, which are produced singly on slender stems 2in. high, are composed of a four-toothed calyx; corolla, four petals, or four-toothed and funnel-shaped; when fully expanded each flower is in. across, and shows a distinct yellow eye. The leaves of the root are spathulate, those of the stems opposite and lanceolate; all the parts are shown of the natural size in the ill.u.s.tration.

All the known Houstonias are natives of North America; still, our winters seem to kill strong plants. From an impression that the plants were destroyed by insects amongst their roots and foliage, I had several tufts lifted, well shaken out, and divided in the autumn; they were replanted in leaf soil and sand and kept rather moist. When planting them, all amongst the roots was thickly strewn with dry silver sand, so as to leave no s.p.a.ce for the lodgment of vermin; the results were fine, fresh, green tufts throughout the following winter, which, however, was not severe; still, the plants not so treated dwindled and were unhealthy, whereas the others were finely in bloom, the subject of the drawing being one of them. These minute plants do well and look well wedged between large stones on rockwork, where they flower nearly all the year round; they also form pretty pot specimens under cold frame treatment; and they may be used with good effect for surfacing the pots in which other hardy but tall and bare stemmed things--such as lilies--are grown.

The mode of propagation has been indicated by the above autumnal treatment.

Flowering period, April to July.

Hutchinsia Alpina.

_Syn._ LEPIDIUM ALPINUM; _Nat. Ord._ CRUCIFERae.

An alpine species, from South Europe, which may be said to be evergreen in this climate, and, according to my experience of it, flowering throughout the year. Though found in some gardens to be difficult to establish, when it finds a suitable home it becomes a pretty addition.

This alpine seldom exceeds 2in. in height. The flowers are a glistening white and very small, produced in numerous heads, and they are very enduring; the calyx is concave and falls off; the four petals are inversely ovate; the little leaves are deeply lobed, of a pale s.h.i.+ning green colour, with plenty of substance; its habit is spreading or creeping. Neither slugs nor any other pests seem to meddle with it. It may be transplanted at any time, and the mode of propagation may be gathered from the following remarks.

Probably because its name implies its alpine character, some may be misled to plant it on rockwork; whether that be so or not, I so tried it, and found it would not grow in such a situation. A bed of dwarf and moisture-loving subjects was being planted, in which a bit of this Hutchinsia was dibbled, and it found a home in the moist vegetable soil.

For two or three years I do not remember to have seen it, or the seedlings, without flowers; its pretty, dwarf, rue-like foliage grew so thickly that it threatened to kill the edging of gentianella and such things as _Polemonium variegatum_, the double cuckoo-flower, and the little _Armeria setacea_; it also filled the walks, and its long wiry roots have been eradicated with difficulty. From this it will be seen how much depends, with some plants, on the position in which they are placed.

Hydrangea Paniculata Grandiflora.

LARGE-PANICLED HYDRANGEA; _Nat. Ord._ SAXIFRAGACEae.

This dwarf shrub is perfectly hardy and deciduous; it comes from j.a.pan, and is one of the best hardy things I have come across for some time. It is quite a new introduction, and has many fine qualities; the fact of its producing immense cl.u.s.ters of white flowers, 12in. long and 12in. in circ.u.mference, as well-established plants, is enough to induce its extended cultivation; but when it is stated that its cl.u.s.ters are numerous and durable, that the shrub begins to flower in summer and continues in great beauty until damaged by frosts, it will doubtless be recorded on the lists of desiderata of those who do not possess it. The usefulness of such a subject is notable not only to the gardener who has a keen eye to artistic effect, but to the lover of showy flowers (see Fig. 53).

The flowers are male and female kinds, and, as is usual with the genus, the fruitful ones are interspersed with unfruitful, being shorter in the stalks and nearly covered over by the latter, which are much larger; in fact, they are not the true flowers from a botanist's point of view, but with the florist it is exactly the opposite; their colour is white, more or less tinted with pink, which, if the autumn season proves fine and dry, becomes purple. As the name denotes, the bloom is arranged in ma.s.sive panicles, pyramidal form, 6in. to 12in. long, and 4in. to 8in.

in diameter. They slightly bend with the great weight, but are otherwise well supported by the woody stems. The latter are somewhat short, seeing they carry such large cl.u.s.ters. The leaves are oval, subcordate (varying), distinctly ribbed, and finely toothed, also varying much in size. The habit of the shrub is much branched, of strong growth, and very floriferous. The flowering shoots issue from the hard wood of the previous season's growth. In the shrubbery it is very attractive, its flowers out-numbering, out-measuring, and out-lasting most of its neighbours. Kept dwarf, what a grand bedder it would make! Grown in pots it is a first-cla.s.s indoor subject. It has that rare quality, even when in small pots, of being adapted for the company of large ferns, palms, &c., from the great size of its panicles, and I need scarcely say that for cutting purposes it is valuable, more especially in decorations which are not closely viewed.

[Ill.u.s.tration: FIG. 53. HYDRANGEA PANICULATA GRANDIFLORA.

(One-tenth natural size); blossom, natural size.]

The culture of this shrub is very simple; it does best in rich loam. The situation should be sunny, that it may well ripen its wood. In order to have cl.u.s.ters of large size, it should be closely pruned, like roses, by which treatment the bush may also be kept in the desired form. Its propagation is by cuttings; they should be of fairly well-ripened wood of the last season's growth. The degree of ripeness, like that of such things as roses and fuchsias, may vary according to the method by which the cuttings are to be treated. Half-ripened shoots will root well in a little heat; the harder wood will root equally well, but more slowly, in the open in sandy loam.

Flowering period, July to end of September.

Hyperic.u.m Calycinum.

LARGE-CALYXED ST. JOHN'S WORT, _or_ ROSE OF SHARON; _Nat. Ord._ HYPERICACEae.

A very ornamental deciduous shrub, but often green throughout the winter. This I claim the privilege of introducing amongst herbaceous perennials; it is a well-known and favourite "old-fas.h.i.+oned" flower, in fact, a native of Ireland. The old name for it was "Cup St. John's Wort." In July it is in splendid form, and, familiar as we are with it, it never fails to win admiration. How charming are its large, s.h.i.+ning, golden blossoms, nestling amongst the bright but glaucous foliage! the bundled ta.s.sels composed of numerous filamentary stamens glistening like threads of gold; and though often seen one can never tire of it. As a flower, it is distinct in form, showy, and richly effective.

It grows to the height of 1ft. or 18in.; the flowers are 4in. across, of a rich golden-yellow colour, and produced singly on the very leafy stems which, at the base or at their more woody parts, are square, the upper parts being nearly round. Short flower-stalks issue from the side and near the top, a small new growth being produced in juxtaposition with the blossom, the said growth being composed of half-a-dozen or so smaller-sized leaves of a pale apple-green, charmingly suffused with a glaucous hue. The calyx of five sepals is very large, whence the specific name, and each sepal is nearly round and cupped, whence the old common name, "Cup St. John's Wort"; the five petals are 2in. long and widely apart; stamens very numerous, long, thready, and arranged in tufts. These are very beautiful, and form the most conspicuous part of the flower; like the other seed organs, and also the petals, they are of a rich, glistening, yellow colour. The leaves are closely arranged in pairs, opposite, and nearly sessile; they are 2in. to 3in. long, and about 1in. broad, oval-oblong, blunt, smooth, and leathery. When young, they are as above described, but when older, they are of a dark, s.h.i.+ning green colour, and somewhat reflexed. The under sides are finely reticulated or veined, and sometimes the foliage is spotted with brown.

The habit of the shrub is neat, the short stems being numerous and semi-prostrate, forming dense, even ma.s.ses of verdant foliage.

Hardy Perennials and Old Fashioned Flowers Part 26

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Hardy Perennials and Old Fashioned Flowers Part 26 summary

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