Offset (plant)

“ Suckers of another kind spring up from the collar of the old plant, and when removed are always slipped, or cut off, with the fibrous roots that they may have made, attached. Offsets are young bulbs which form by the side of the old one, and merely require breaking off, and planting in rich light soil. Runners are shoots springing from the crown or collar of the plant, which throw out roots at their joints; and which only require dividing from the parent plant and replanting in good soil to make new plants. ”

“ The leaves of the root are 2in. to 4in. long, smooth, entire, linear, almost grass-like; those of the stems much less, becoming smaller as they near the flowers; they are somewhat rough, partaking of the quality of the stems. The habit of the plant is much branched, the spreading clusters of flowers being six or ten times the size of the plant, so that it becomes top-heavy; it blooms for many weeks, and is not damaged by coarse weather. Amongst other Asters it shows to advantage, flowering earlier than most of them, but lasting well into their period of bloom. ”

“ The treatment which we find to suit the plant, is to grow it in a basket suspended from the roof, as it requires and enjoys all the light that can be given to it; but, of course, it needs to be shaded from the burning sun. The most suitable material in which to grow the plant is sphagnum moss and fibrous peat. It requires also a good supply of water in the growing season, so that it must be thoroughly drained. It thrives best in a cool house in which the same temperature is maintained as is found congenial to Odontoglossum Alexandræ, and others of that class. ”

“ Sow seeds in pans, in a cool house or frame, as soon as ripe, or in the early part of the year, and keep the plants close to the glass during their early stages, as they are very liable to damp off. Sow thinly, so as to enable the young plants to pass a second season in the seed pots or pans. Early in the third season, pot off and plant out singly, encouraging them to grow freely. Propagation by offsets is the most usual method. With liberal treatment, most of the species increase pretty freely. The offsets are best removed when the plants are in a dormant state. ”

“ The flowers of most of the species are white. They are sometimes grown in plant cases, or under bell glasses, but if the proper position in a warm, moist house can be found, they are better without these coverings. Propagation renews the vigour of the plants and prevents them degenerating, as they often do in cultivation if left undisturbed for too long a period. ”

“ In fertilising small flowers with the pollen of larger species, as in the case of Sophronitis grandiflora with the pollinia of the larger species, the pollen masses may be cut and a portion of it used in crossing the smaller flower. When the flower of a plant has been fertilised, the plant should receive special attention ”

“ In the case of varieties that need to be propagated, the pieces removed should be placed in comparatively small Orchid pans or baskets, properly labelled, and in due time useful and often valuable specimens may be secured from material which would only have been detrimental to the parent plant. The same kind of treatment will be found equally beneficial in the case of garden hybrids which have been cultivated long enough to have a number of back bulbs. ”

“ It is the capacity it possesses of flinging out offshoots of itself to incredible distances, which offshoots no sooner touch ground than they begin to weave a kind of ugly green net over everything within reach, enmeshing it all into as dense a mass of leaves and roots as is the parent plant. ”

“ When in flower the branches spread rigidly, but as the seed ripens the leaves begin to wither and drop off, the branches curl inward, and the plant becomes coiled up so as to resemble a small ball. In this state it is loosened from the soil and is drifted about with the sand over the arid plains. Should rain fall, or should it be blown into the water, the branches expand, the pods open, the seeds fall out, and it is a remarkable and newly-discovered fact that in the short space of twenty hours the seeds germinate and root. The plant will retain its susceptibility for years. ”

“ Possibly the seed is ripened below the surface for the same reason. At no time should the crown of the cultivated plant be lower than two feet below the water. If a number of species are grown, it is best to plant each kind in a separate basket, sunk in the shallow tub, to prevent the roots from growing together, as well as to obtain more effective decoration. ”

“ Flowers which are intended to be fertilised for seed-bearing should have their own pollen carefully removed before the pollen taken from the other plant is introduced, the pollen removed being used to effect the reverse cross, or to fertilise another species if desired. ”

“ While growing and blooming they should be watered sometimes, or the plants get too dry. As they go out of flower you should remove the seed-heads, as when they all set they exhaust the plant; but do not cut the stems or leaves, because they are wanted to strengthen the tubers for the following year. Their stems are so strong that they do not require stakes. They should be planted from six to nine inches deep and twelve inches apart, and once established, they should never be disturbed. When the young shoots of the Alstrœmeria appear in spring, slugs must be kept away. ”

“ The plants should be grown in the potting materials recommended for epiphytal Orchids, and surfaced with Sphagnum-moss. Being evergreen, and with no superabundant vitality, they should be kept moist all the year, but liberally watered when growing. A moist corner of the intermediate house, or warm house, should be selected for them, each plant being raised on an inverted pan or pot. When grown in the warm house, a rest should be given in a cooler house after growth is completed, but the plants must not be dried off. ”

“ Give each plant a clear space of three or four feet to afford easy access for staking and watering. By midsummer offshoots will begin to push through the soil. The removal of these will throw all the strength of the plant into one stem. To insure its safety a strong stake will be required, which should be firmly driven into the ground, and rise six or seven feet above it. ”

“ Into this the sap continually oozes, and it is removed twice, sometimes thrice a day by a peon, who sucks it into his mouth and then ejects it into the jar he carries on his back. As soon as the plant exhausts all this sap, which was originally intended to give strength and life to the flowering stem, it dies, and is replaced by innumerable suckers from the old root. Great care must be exercised in cutting the plant—if the least too soon or too late, it is the death of it. ”

“ Stakes should be used that when driven will be about two-thirds the height of the plants. Tie with soft string, with a sort of a slip-knot so that a half dozen of the main branches have a band supporting them, yet are not drawn up so hard and tight as to cut into the branch.
If a display of Asters are wanted for a flower show make the ground as wet as mud. Then lift each plant with a spade or mattock slowly and skillfully. The roots, dirt and all, will come up in a solid mass. Pot at once, before any of the earth is shaken off. ”

“ In fact they should be regarded as the guy-ropes of a flagstaff, intended to hold the plant firm from all points. If a root is too long to lie at its full length in the hole, instead of trying to fit it in against its natural inclination by turning it round the side of the hole, a further little channel must be dug in which it can lie perfectly flat. And great care must be taken not to injure the little white, fibrous rootlets, which mean flowering strength for the coming season. ”

“ Osborn concludes that the ordinary food is not drawn directly from sap, but consists of exudation or pollen, the tissues {530}of the plant being pierced only when a supply of food from the usual sources falls short. Members of this family have been reputed as being very injurious to cultivated plants, especially to cereals, and it is said that as a result the harvests in Europe have been seriously diminished. Several species may take part in the attacks. ”

“ A torn, bruised, or broken root, if left on the plant will decay right up and do incalculable mischief. Sometimes, in the case of one's own roses grown from cuttings out of doors, the roots are so rampant that it is well to shorten them before replanting; but this is not often necessary with new stock from the growers.
The holes must now be dug ready for the reception of each plant. In well-worked ground, such as the new bed described above, a hole eighteen inches across and eight inches to one foot in depth, is sufficient: but in this we must be guided by the root habit of each plant. ”

“ They will seed themselves in most situations, and the same plant will often flower a second year. They are described in seed catalogues as nine inches high, but though they really grow rather taller than that, it is not usual to stake them. At the same time, these and many other flowers inclined to straggle a little may be supported with great advantage, just as Sweet-peas are, by a few branched stakes of Hazel or some similar wood. When you treat a non-climbing plant in this way, your stakes should be rather shorter than the plant, and artfully hidden by its leaves. ”

“ Origin of the Flower-cluster.—We have seen that branches arise from the axils of leaves. Sometimes the leaves may be reduced to bracts and yet branches are borne in their axils. Some of the branches grow into long limbs; others become short spurs; others bear flowers. In fact, a flower is itself a specialized branch.
Fig. 211.—Terminal Flowers of the Whiteweed (in some places called ox-eye daisy) .
Flowers are usually borne near the top of the plant. Often they are produced in great numbers. It results, therefore, that flower branches usually stand close together, forming a cluster. ”

“ It produces its flowers in March, and is increased by dividing the roots in autumn. Height, 6 in.
Oncidium Sarcodes.—Plant these Orchids firmly in well-drained pots, using equal parts of live sphagnum and fibrous peat. Give one good watering as soon as the potting is finished, and stand them in a light, warm part of the greenhouse. They will require very little more water until the roots have taken hold of the soil—only sufficient to keep the pseudo-bulbs from shrivelling—and during the winter months scarcely any moisture is needed. They flower in August. Height, 1-1/2 ft. ”

“ In this country it is seldom seen more than 10 ft. high. The stem is tree-like, simple or divided at the top, and often, when old, becoming{127} much branched, each branch terminated by a crowded head of lanceolate-linear entire leaves of a glaucous green colour. The flowers form a large terminal panicle, and are individually small and of a greenish-white colour. This plant is more graceful and effective when in a young state, in which it usually occurs in our gardens, than when old and branched. ”

“ From the time the little plants are established in small pots until their flowering stage, it is only a matter of ordinary culture, although, as a rule, the small seedlings are safer with four or five degrees more heat than is afforded the established plants. In the matter of growth from the seedling stage to the flowering plant, there is but little need of a resting season, even with species such as are deciduous when mature, although a diminished supply of water may be given for a short time to any which, having completed a growth, show no sign of developing a fresh one. ”

“ Another mode is to cut off all the flowers nearly down to the old wood; side shoots will thus be induced to grow earlier than otherwise, so that in late summer they may be taken off as slips, and there will still be plenty of time to strike them like wallflower slips, and get plenty of roots to them before the cold weather sets in. The plant also produces seed freely in its inflated pods, which affords another, but more tedious, way of increasing it. ”

“ The stem is made much stronger by the bases of the leaves being wrapped so firmly around for a distance above the point of attachment at the node. Notice the close-fitting sheath or rain-guard, where the blade of the leaf leaves the stalk. This prevents rain soaking down inside the leaf sheath, but lets it run down the outside to the root where it is needed. As the plant gets older and taller, new roots come out from the node next above the root and sometimes from the second node above. ”

“ Though I do not believe that a plant will spring up where no seed has been, I have great faith in a seed—a, to me, equally mysterious origin for it. Convince me that you have a seed there, and I am prepared to expect wonders. ”

“ The bud disappears when the blossom breaks through, and we might say that the former is refuted by the latter; in the same way when the fruit comes, the blossom may be explained to be a false form of the plant's existence, for the fruit appears as its true nature in place of the blossom. These stages are not merely differentiated; they supplant one another as being incompatible with one another. ”

“ What discourse can touch all? Can the human mind make an exact review, remark every distinctive property, exhibit all the differences, unveil with certainty so many mysterious causes? The same water, pumped up through the root, nourishes in a different way the root itself, the bark of the trunk, the wood and the pith. It becomes leaf, it distributes itself among the branches and twigs and makes the fruits swell—it gives to the plant its gum and its sap. ”