Hardy Perennials and Old Fashioned Flowers Part 17

One of the alpine gems of our rock gardens, not in the sense of its rarity, because it grows and increases fast. It came from Switzerland about sixty years ago, and for a long time was esteemed as a biennial, but it is more--it is perennial and evergreen; at any rate its new branches take root, and so its perennial quality is established. Let the reader imagine a shrub, 3in. high, much branched, and densely furnished with pale green foliage, which hides all its woody parts, forming itself into cus.h.i.+ons, more or less dotted over with minute canary-yellow flowers, and he will then only have a poor idea of the beauty of this pretty alpine. It flowers in summer, autumn, and winter, and in certain positions both its habit and flowers show to most advantage at the latter season. At no other time during the year have my specimens looked so fresh and beautiful as in January. This I have proved repeatedly to be the result of position, shortly to be explained.

The flowers are produced in terminal racemes, are scarcely in. across, cruciform in the way of the Wallflower, greenish-yellow, and delicately scented. The leaves vary in shape on the various parts of the branches, some being lance-shaped and others nearly spoon-shaped; the lower ones being all but entire, and the upper ones, which are arranged in rosettes, distinctly toothed. They seldom exceed an inch in length, more often they are only half that size, but much depends on the position and soil. In summer the foliage is greyish-green; later it is almost a bright or clear green, the latter being its present colour. The habit is branching and compact, by which it adapts itself to crevices and uneven parts in a pleasing manner; and not only does it best adorn such places, but from the fact of their dryness, they are better suited to the requirements of this little shrub.

A sandy loam, such as will not bake, suits, and if mixed with a few stones all the better--this will be found ample food for it; poor soil and a dry situation grow this subject in its finest form. I may perhaps usefully give the method by which my specimen is grown, after experimenting with it in various parts of the garden, and also the substance of a few notes I made of it. In pots the fine roots soon formed a matted coat next the sides, when the foliage would turn sickly and yellow, so that, useful as the practice is of growing alpines in pots, it does not answer in this case. On rockwork, in vegetable soil, this low shrub grew taller, being less woody, and was killed by severe weather. On the flat, in borders, in rich soil, it did well for a season, then damped off, a branch or two together. On the flat, in sand alone, it does well, also on the top of a wall, such being a position especially provided for hardy sempervivums and a few cacti. A bit of the Fairy Wallflower was tried there in a thin layer of sandy loam, and for two years my finest specimen has occupied that position, flowering more or less throughout the winter. Where there are old walls or rockwork it should be introduced. A ready and effective way of planting it is to get a sod of gra.s.s 3in. thick; measure with the eye the size of the interstice in the side of a wall, partly cut through the sod on the earthy side, open it by bending, and insert the roots of a small specimen; close up, and cram the planted sod tightly into the selected opening. In one season the shrub so planted will have a snug and pretty appearance. It is self-propagating, from the fact of its lower branches rooting where they touch the soil. These may be taken any time and planted separately.

Flowering period, April to winter.

Erythronium Dens-canis.

DOG'S-TOOTH VIOLET; _Nat. Ord._ LILIACEae.

A hardy bulbous perennial. There are several varieties of this species, and all are very handsome.

The variety shown at Fig. 38 is the large white-flowering kind; others have yellow, pale purple, and lilac-coloured blooms. All are produced singly on stems 4in. or 5in. long, and gracefully bending. During bright weather the divisions of the lily-like flowers become reflexed and otherwise show themselves to advantage. Their foliage forms a rich setting for the flowers, being variously coloured with red, brown, and different shades of green, all charmingly blended or marbled. The leaves are broad and oval, and open out flatly, so that their beauties can be well seen; if they are grown amongst the very dwarf sedums or mosses, they look all the better and are preserved from splashes. Two leaves, one stem, one flower, and one bulb const.i.tute a whole plant; both flowers and foliage remain in beauty for a long time.

I have them growing in various positions and soils, and I think they most enjoy a vegetable mould, with full exposure to the sun, but they should not lack moisture; they seem to increase more rapidly in peat than in any other compost. They should not be disturbed more than necessary, and when they are, autumn is the best time to transplant.

[Ill.u.s.tration: FIG. 38. ERYTHRONIUM DENS-CANIS.

(Large white variety. One-half natural size.)]

Flowering period, March and April.

Euonymus j.a.ponicus Radicans Variegata.

VARIEGATED ROOTING SPINDLE TREE; _Nat. Ord._ CELASTRACEae.

It is probable that the genus _Euonymus_ is more generally known than that of _Celastrus_, from which the order takes its name; besides, the latter is composed of unfamiliar genera, so it is more likely that the reader will not care about any reference to them; it may concern him more to know that the above somewhat long name belongs to a very dwarf hardy evergreen shrub, having a neat habit and very beautiful foliage.

This variety is one of many forms which come under the name _E.

j.a.ponicus_, none of which, however, have long been cultivated in this country, the date of the introduction of the type being 1804. The genus is remarkable for the number of its species having ornamental foliage, and not less so, perhaps, for the insignificance of their flowers. The species under notice (_E. j.a.ponicus_) in cultivation has proved sportive, which habit has been taken advantage of, whence the numerous forms, including the one I have selected for these remarks. Some of the Spindle Trees do not flower in this climate, and others, which do, produce no seed; these facts are in connection with the more finely leaf-marked sorts, and it may be inferred that such unfruitfulness arises from their hybrid nature or abnormal tendency, as seen in "sports."

The typical form is a tree growing 20ft. high, producing small white flowers, but of the variegated kind under notice established specimens have ever failed to show the least sign of flowering, though otherwise well developed and of good habit. The leaves are nearly oval, in. to 1in. long, sometimes oblong, sharply serrulated, of stout leathery substance, smooth, and much variegated in colour. The markings are mostly on and near the edges, and take the form of lines and marblings.

The tints are a mixture of white, yellow, and pink, inclining to purple; these are variously disposed on a dark green ground. The arrangement of the leaves is crowded and panicled on the recent shoots, which are twice and thrice branched; from the shortness and twisted shape of the leaf stalks, the branchlets have a compressed appearance. The old stems are round, wiry, 9in. to 18in. long, prostrate, and emit roots like the ivy when they come in contact with suitable surfaces, whence the name "_radicans_." The habit of the shrub, from its dense and flattened foliage, fine colour, and persistent nature, together with its dwarfness and rooting faculty, all go to render it one of the finest rock shrubs for winter effect. The wetness of our climate only seems to make it all the brighter, and it is also without that undesirable habit of rooting and spreading immoderately.

It enjoys a sunny situation and enriched sandy loam. Where such conditions exist it may be planted with good effect as a permanent edging to walks or beds; as such it may be clipped once or twice a year, but I may add that it is worth the extra time required for pruning with a knife, as then the leaves are not cut in two and the outline is left less formal. By such treatment the foliage is kept thick to the base of the shrub. The summer prunings may be p.r.i.c.ked into sandy loam in a shady part, where they will root and become useful stock for the following spring, or strong examples may be pulled to pieces of the desired size.

Festuca Glauca.

BLUE GRa.s.s; _Nat. Ord._ GRAMINEae.

This comes from the warm climate of Southern Europe, but is a perfectly hardy gra.s.s in this country; it is highly ornamental, irrespective of its flowers, and is useful in several ways. With me it is grown somewhat largely, and both professional and amateur gardeners have quickly appreciated its effectiveness, but it has been amusing to see their want of faith when told that "it stands out all winter." It belongs to a section of gra.s.ses of fine quality as fodder for cattle, all enjoying good soil of a light and rich nature. Its main features as a garden subject are its distinct blue colour and dense graceful habit; these qualities, however, are greatly dependent on the quality of soil, which must be positively rich. Its bloom is of no value ornamentally, being much like that of some of our common meadow gra.s.ses, and it will be as well to remove it in order that the gra.s.s may be all the brighter and more luxuriant. The blades, if they can be so called, are reed-like, but very fine, 6in. to 12in. long, densely produced, and gracefully bending.

The glaucous quality is most p.r.o.nounced, and quite justifies the common name Blue Gra.s.s. More need not be said to show that this must be effective in a garden, especially where bedding and the formation of bold lines are carried out; as single tufts, on rockwork, or in the borders, it looks well; whilst as an edging to taller gra.s.ses and bamboos it shows all to advantage. It is also often grown in pots in greenhouses, where it proves useful for drooping over the edges of the stage; but if it once obtains a place in the garden and is well grown, the amateur will see in it a suitable subject for many and varied uses.

Wherever it is planted the soil should be made sandy and fat with manure; in this the long roots are not only warmer, but they amply support a rapid growth and metallic l.u.s.tre. As the roots can easily be lifted from the light soil without damage, this gra.s.s may be divided any time when increase is needful.

Flowering period, summer.

Fritillaria Armena.

_Nat. Ord._ LILIACEae.

A charming little hardy bulbous perennial, which, although as yet a comparative stranger in this country, bids fair to find a place not only in our gardens, but in the list of the choicest spring favourites, such as lily of the valley, snowdrops, snowflake, and squills, being of the same or nearly allied order, as well as of corresponding stature. Its yellow flowers, too, highly commend it, as, with the exception of the yellow crocus, we have not a very dwarf spring flower of the kind, and, as may be seen by the ill.u.s.tration (Fig. 39), it differs widely from the crocus in every way.

[Ill.u.s.tration: FIG. 39. FRITILLARIA ARMENA.

(One-half natural size.)]

This is a really charming species; its dark yellow flowers are large for so small a plant, being more than an inch across when expanded by suns.h.i.+ne, but its more common form is bell-shape; one, and sometimes more flowers are produced on the upright, smooth, leafy stem, which is less than 6in. high. The leaves are alternate linear, sharply pointed, smooth, and glaucous: Such dwarf flowers always show to most advantage, as well as keep cleaner, where carpeted with suitable vegetation; the dark green _Herniaria glabra_ would be perfection for this glaucous plant.

It seems happy where growing fully exposed in ordinary garden soil, but it is not unlikely that it may require more shade, in common with other Fritillaries, for, as before hinted, it is yet in its trial stage. I am, however, pretty certain of its hardiness, but not about the best mode of culture and propagation.

Flowering period, April and May.

Funkia Albo-marginata.

_Common Name_, WHITE-EDGED PLANTAIN-LEAVED LILY; _Nat. Ord._ LILIACEae.

A hardy herbaceous perennial from j.a.pan, of but recent introduction, than which there are few more useful subjects to be found in our gardens. It combines with its wealth of foliage a bold spike of pleasing lilac flowers, the former, as implied by the specific name, being edged with a white line, which is broad and constant, this quality being all the more commendable from the fact that many variegations are anything but reliable. Speaking of this as a decorative plant for the garden, it may be said to be one of the best; however placed, it has a neatness and beauty which are characteristic, especially when used in lines, and has become well established; from early spring, when the fresh young leaves appear, until the autumn is well advanced, this plant upholds a fine appearance independent of its flowers; they are, however, not wanting in beauty, produced as they are on stems nearly 2ft. high, and nude with the exception of one or two very small leaves. The floral part of the stem will be 8in. or more in length; the flowers are numerous, 2in.

long, trumpet-shaped, drooping, and so arranged that all fall in one direction; the colour is lilac, with stripes of purple and white; each flower is supported by a bract, which, like the foliage, is margined with white. The leaves are 6in. to 8in. long, oval-lanceolate, waved and ribbed, of a dark green colour, margined with white; the leaf stalks are stout, 6in. long, and broadly channelled.

Flowering period, June to August.

Funkia Sieboldii.