It was originally prepared by me for the "Cambridge Plant Club," whose members were so kind as to assure me that they found it helpful and entertaining. It was copied from the "Garden" by the Cambridge Tribune, but may, nevertheless, be new to the present reader:
CHAPTER IV
The House Garden. The Selection, Arrangement, and Culture of House Plants
Apart from that æsthetic satisfaction which house plants afford, the principle of growth, which they exemplify, has its own strong and almost universal attraction. Thus it is that we behold in dust-blurred windows of squalid tenements rows of dented tomato cans, desolately holding their stunted geraniums, fuchsias, and other feeble bits of greenery. Such half-pathetic attempts at floriculture are, indeed, "touches of nature" that "make us kin" to the forlorn inmates of these shabby, ill-conditioned dwellings who, amid poverty and its possible degradation, have still courage for, at least, one fine endeavor.
The sole purpose of this paper is to impart some simple knowledge gained through a long and earnestly-loving experience in the beautiful art of plant-culture. Our first step is the choice of our plants; and we shall do wisely to select such as will best accommodate themselves to the somewhat adverse conditions of furnace-heated and gas-lighted rooms such as most of us occupy. First and foremost in our collection should stand sweet-scented plants; not only because these impart to our rooms a delicious air of summer, and etherealize the atmosphere of our homes, but also because of their sanitary value, medical authority having distinctly declared that the perfume of growing flowers, exhaling on the in-door air, tends to neutralize fever and other disease-germs. For delicacy of perfume and continuity of bloom the heliotrope may take the first rank among odorous house plants. Its very name—derived from two Greek words, Helio, the sun, and trope, to turn—is charmingly suggestive of summer-time. The plant does not belie its name. It cannot have too many sun-kisses. As a cut-flower it is perishable and unsatisfactory, but its growing bloom lasts long, and holds its odor even in decay; it is delightful up to its very last breath.
To secure good winter bloom from the heliotrope, begin in early summer with the plant while in the ground, and by repeated pinching-back make it sturdy and robust. This done, choose some cloudy afternoon, about the middle of August, for potting. Your soil should be thus prepared: one-third good loam, one-third leaf-mold, and one-third well-rotted manure; a few pinches of soot may be added, and enough white sand mixed through the whole to keep it light and dainty. Pot carefully, and with as little root disturbance as may be. Water thoroughly, and keep the plant in shade until its leaves recover their tone. After this it may stand in the sun, if given plenty of water, for a week or two, while the buds get under way.
Be sure to house before the faintest suspicion of frost, as this sun-lover is extremely tender, and the slightest nipping harms it. Give it a southern exposure in your room, and place close to the glass; and if you have not a double window, leave the fly-screen in to save the leaves and blossoms from immediate contact with frosty panes. A heliotrope should never once become wholly dry, and should have a weekly drink of manure-water, which must be about the color of moderately strong coffee. For insect pests, dust the leaves with a light feather-brush, and then wash thoroughly. This process must be repeated as often as the insects appear.
The odorous sacred lily of China we all, no doubt, grow yearly in water, with a bottom layer or two of pebbles. It is well to make incisions lengthwise of the bulb with a sharp knife before planting, and there should be lumps of charcoal among the pebbles to keep the water sweet. A single bulb, thus treated, will give one seven flower-stalks. The old-fashioned plant, the calla, though less common than it was twenty years ago, if grown in an artistic vase and given an entire window, is beautiful.