Seed leaf

“ Every seeming seed planted, then, is a mere envelope of two or more seeds, and two or three plants come up, very much to the surprise of the inexperienced, for each husk. When a little advanced, they are to be thinned out to one in a place.
We prefer planting very early, and in rows eight inches apart and at about one inch distant in the row. As the plants begin to gain size they make very delicate greens; and for this purpose are to be boiled, leaf, root, and all. Continue to thin out until one is left for every six inches for full growth. ”

“ As the majority of the species differ in mere technical details, we have given a representative group only. They are easily cultivated in a sandy loam and leaf soil, and are increased by seeds and division, separate pieces being planted as cuttings under hand glasses; or the rarer kinds should be potted and placed in a frame. The seed should be sown in spring, in pots of sandy soil, and placed in a cold frame. Although best grown as rock plants, most of them do well in pots and borders. ”

“ The roots of air-plants, such as certain orchids, draw their nourishment from the air.
The experiment of marking roots and stem has been already tried, but it should be repeated. Repetition of experiments is always desirable, as it fixes his conclusions in the pupil's mind. The stem grows by a succession of similar parts, phytomera, each part, or phyton, consisting of node, internode, and leaf. Thus it follows that stems must bear leaves. The marked stems of seedlings show greater growth towards the top of the growing phyton. It is only young stems that elongate throughout. ”

“ Light is not necessary, and in winter time the neighborhood of the furnace is often a very convenient place to keep them safe from frost. They should not be in the sun while germinating. When the first sprouts appear above the ground let another set be planted, and so on, till a series is obtained ranging from plants several inches high to those just starting from the seed. The seeds themselves should be soaked for a day and the series is then ready for study. The time required for their growth varies according to the temperature, moisture, etc. ”

“ As the different varieties do not always come true from seed, it is best to propagate by means of cuttings taken in autumn, or take up the old plants before the frost gets to them, remove all the young shoots (those at the base of the plant are best, and if they have a little root attached to them so much the better) , and plant them thinly in well-drained, shallow pans of leaf-mould and sand ”

“ The commonest kind of leaf, which therefore may be taken as the type or pattern, is an expanded green body, by means of which the plant exposes to the air and light the matters which it imbibes, exhales certain portions, and assimilates the residue into vegetable matter for its nourishment and growth.
119. But the fact is already familiar (10-30) that leaves occur under other forms and serve for other uses,—for the storage of food already assimilated, as in thickened seed-leaves and bulb-scales; for covering, as in bud-scales ”

“ This curious plant is often grown for the amusement it affords by its habit of closing its leaves and dropping the leaf-stalk whenever the plant is touched. Seed should be sown in heat early in the season, and the plants grown in pots or a protected border. The seed is sold by all seedsmen. The plant grows readily in a temperature suited to beans. It will not stand frost. The young plants are usually the most sensitive.
Shade Trees. The best Shade Trees are usually those which are native to the particular region, since they are hardy and adapted to the soil and other conditions. ”

“ In the plant, the eye or germinative point opens to a leaf, then to another leaf, with a power of transforming the leaf into radicle, stamen, pistil, petal, bract, sepal, or seed. The whole art of the plant is still to repeat leaf on leaf without end, the more or less of heat, light, moisture, and food, determining the form it shall assume. ”

“ Both together form no large store, but sufficient for establishing the seedling, with tiny root, stem, and pair of leaves for initiating its independent growth; which in due time proceeds as in Fig. 44, 45.
Fig. 44. Seedling of Morning Glory more advanced (root cut away) ; cotyledons well developed into foliage-leaves: succeeding internode and leaf well developed, and the next forming. 45. Seedling more advanced; reduced to much below natural size.
34. Smaller embryos, less developed in the seed, are more dependent upon the extraneous supply of food. ”

“ Once upon the ground, the seed has to germinate if it can; its root has to pierce the soil or find a way in between crevices of rocks or sharp-edged stones. All the time it is exposed to danger from birds, beasts, and insects, which are only kept off by its resin. But it is difficult to see, for its colour is just that of dead pine needles and its shape is such that it easily slips into crevices. Then the seven or eight small green seed leaves break out of the tough seed coat, and the seedling is now a small tree two inches high. ”

“ In the first place, the sun warms the ground in which the seed lies buried. Then the seed swells and bursts, and sends downward a little root; the root drinks in the water from the soil, and so gets larger, and spreads around; and by-and-by it sends up a stem above the ground. As soon as the sunlight falls on the little plant, it gets stronger, and is able to take food as well as drink from the soil, so as to get its full shape and size and green color. ”

“ Everything was prepared, and even formed, beforehand: the short joints of stem in the bud have only to lengthen, and to separate the leaves from each other so that they may unfold and grow. Only a small part of the vegetation of the season comes directly from the seed, and none of the earliest vernal vegetation. ”

“ Illustrations of this fact are frequently observed where earth from a considerable depth has been thrown up to the surface, when it often becomes covered with plants not usually seen in the neighbourhood, which have sprung from buried seeds. When all the necessary conditions for germination are fulfilled, the seed absorbs moisture, swells up, and sends out a shoot which rises to the surface, and a radicle which descends—the one destined to develop the leaves, the other the roots, by which the plant is afterwards to derive its nutriment from the air and the soil. ”

“ The root and a little of the lower stalk is from a seed, and upon this has been grafted or spliced with soft bands and wax, a bud from some choice kind of peach or apple or plum, or whatever the tree is to be, and this new bud grows and forms the tree. Sometimes a bud of the choice kind is merely inserted beneath the bark of another tree and grows and forms a new limb. By and by, when it bears fruit, the fruit will be of the kind that was on the choice tree, but the seed, though it looks just the same, may be altogether different. ”

“ If so, plant the seeds at home.
When you have planted your seeds, unless you take them up every day, you cannot see how the little plants are behaving down under the soil. I want to tell you how you can know some things that the plants are doing without disturbing them.
Choose an ordinary glass (Fig. 299) , roll up a piece of blotting [460] paper so that it is a trifle smaller than the glass, and place it inside. Between the blotting paper and the glass, put a few radish seeds or any kind of seed such as you planted in the soil. Keep the blotting paper moist and watch what happens. ”

“ It is composed of separate parts which are capable of being developed into the root, stem, and appendages, but they have yet to be so developed; the several parts that we find in the seed are merely the representative parts. But the seed has the future of the tree within itself, it has certain qualities of the future tree impressed upon it in its primary organization, within the capsule of the fruit of the parent plant, so that in a higher sense the image of the future tree does exist within the seed. ”

“ We wish present visible growth, and so we must be willing to lend aid, and first aid to such seeds is to give them a whiff of moist heat to soften what has become more hard than desirable through man's intervention. For in wild nature the seed is sown as soon as it ripens, and falls to the care of the ground before the vitality [Pg 47] of the parent plant has quite passed from it. That is why the seed of a hardy plant, self-sown at midsummer, grows with so much more vigour than kindred seed that has been lodged in a packet since the previous, season. ”

“ CHAPTER III. SELECTING AND SOWING SEEDS.
All individuals of the vegetable world are so created as to reproduce themselves from seed or its equivalent. Every plant that grows seems to possess the power to perpetuate its kind. All kinds of flowering plants can be grown from the seed, providing good, sound seeds are obtained, and they are placed under the proper influences to make them germinate and grow. ”

“ Also in fingering the seeds, you will know why some are slow in germinating: these are either hard and gritty, sandlike, like those of the English primrose, smooth as if coated with varnish, like the pansy, violet, columbine, and many others, or enclosed in a rigid shell like the iris-hued Japanese morning-glories and other ipomeas. Heart of Nature is never in a hurry, for him time is not. What matters it if a seed lies one or two years in the ground? ”

“ Each flower had two green sepals and five colored petals, also five stamens, so they knew it was an exogen, though it would have been harder to tell this from the thick, pulpy leaves and stem. The little seed-pod of each had a tiny cap which lifted off when the seeds were ripe, leaving a perfect cup, heaping full.
"You see, children," said the Chief Gardener, "weeds do not care to be either useful or ornamental. So they become rank and common, and lose their beautiful flowers. But somehow they never have any less seed. ”

“ Said one amateur gardener to me when I gave him this advice: "Why should one be so particular about the seed? It's the culture that you give the plant that counts. Plant any kind of seed that happens to be handiest and take good care of the plants that grow from it and you'll have good vegetables." To some extent what he said was true, but he had yet to learn that there is a vast difference between ordinary seed and seed that has bred into it by careful culture the superior qualities which characterize the choicest varieties of all our garden plants. ”

“ The stem meanwhile is adding to its length throughout; it erects itself, and, seeking the light, brings the seed up out of the ground. The materials for this growth have been supplied by the cotyledons or seed-leaves, still in the seed: it was the store of nourishing material they held which gave them their thickish shape, so unlike that of ordinary leaves. Now, relieved of a part of this store of food, which has formed the growth by which they have been raised into the air and light, they appropriate the remainder to their own growth. In enlarging they open and throw off the seed-husk ”

“ Prick off the seedlings when about an inch high, putting the plants in down to the seed-leaves. They must never be allowed to suffer for want of water, nor should they be starved in small pots. The growth had better not be hurried at any stage; the plants will then develop into shapely specimens with very little care. ”

“ A sowing in drills on a carefully prepared bed in the open ground is also desirable, and in some seasons it may produce the most valuable plants of the year. Asters come so true from seed that the bed may be arranged in any desired pattern. Thin the plants early, and continue the process until they are far enough apart for flowering. A distance of eight inches is sufficient for the miniatures, ten inches for the dwarfs, and twelve or fifteen inches for the tall varieties. ”

“ How Love burns through the Putting in the Seed
On through the watching for that early birth
When, just as the soil tarnishes with weed,
The sturdy seedling with arched body comes
Shouldering its way and shedding the earth crumbs. ”

“ First the ground should be made very fine. This is an easy matter if the planting is done in the hotbed, but more of a problem in the outdoor garden. It is foolish to plant at all if one does not intend to do things right. So work over the seed bed thoroughly. After all is fine and deeply worked, say to about a foot deep, the next thing to consider is this—how deep should a seed be planted?
"The depth depends upon the size of the seed. Take such small seed as poppy, parsley, even lettuce, and these may be just sprinkled on the surface of the ground. ”

“ Usually three seeds are placed in each hole, and if two or three germinate, the plant having the healthiest appearance is retained, and the others removed. The possible objections to this method of planting are obvious to those acquainted with field conditions, but in actual practice planting seed “at stake” has often proved highly successful. ”

“ Some illustrative examples may be quoted in order to give a precise idea of this general conception of dormant or latent characters. Seed leaves are only developed in the seed and the seedling; afterwards, during the entire lifetime of the plant, the faculty of producing them is not made use of. Every new generation of seeds however, bears the same kind of seed leaves, and hence it is manifest that it is the same quality, which shows itself from time to time. ”