Thermometers should be placed at intervals in the beds, as it is not
safe to judge the temperature by personal sensation. If lettuce,
parsley, or radishes are growing in the beds, the temperature should
not go above 70° F. before ventilation is given; on the other hand,
if the frames are filled with cucumbers, eggplant, or peppers, the
temperature may run 8 or 10 degrees higher. It should be borne in mind
that any covering, whether cloth or sash, will exclude a part of the
light, and every precaution is necessary to prevent the plants becoming
"drawn." The safest plan is to keep the temperature a trifle low and
thus retain the plants in a strong, thrifty condition. Where tender
plants are being grown under cloth there is greater danger of injury
from keeping them covered too tightly than from exposure to moderate
cold.
[Illustration: SHOWING VEGETABLES GROWING IN HOTBED]
VENTILATION.
_Open-Air._--In the care of cloth-covered frames the covers are
left off during bright weather and the plants subjected to open-air
conditions. When there is danger of cold the covers are put on at
night, and during unfavorable weather they are frequently left on
during the day. While the cloth covers conserve the heat, they at the
same time exclude the sunlight, and if they are kept on too great a
portion of the time the crops will become drawn and spindling. With
sash-covered frames the matter of ventilation is of prime importance.
The glass admits and holds the heat of the sun's rays, and during
bright weather it is necessary to open the frames quite early in the
morning. Ventilation is accomplished by propping up one end or one side
of the sash on a notched stick. The rule to be followed is to ventilate
on the side away from the wind, so that the wind will blow over the
opening and not into the bed.
_Protection of Frames._--The area occupied by the frames is often
surrounded by a high board fence or a hedge of evergreens to break the
force of the wind. If a large area is devoted to frames it is sometimes
subdivided by numerous cross fences to break up air currents and lessen
the force of storms. Where no heat is applied to the frames the control
over temperature will not be great except in the prevention of too high
temperature by means of ventilation during bright weather. In many
instances straw and burlap mats are kept ready at hand for throwing
over sash-covered frames to prevent loss from freezing, but this would
not be practicable on a large scale. Sometimes the glass is covered by
shoveling one-half or three-fourths of an inch of soil over it, but
this involves considerable labor and frequently results in the breakage
of a great deal of glass. It is possible to ward off frost by the use
of a number of orchard heaters in the frame yard. These heaters burn
kerosene or crude oil and give off both heat and a smudge which will
prevent injury from a reasonable degree of cold.
_Crops Grown in Frames._--The crops most commonly grown in frames
are lettuce, radishes, cucumbers, garden beets, parsley, eggplant,
peppers, and snap beans. The crops grown in the sash-covered frames
do not differ materially from those grown under cloth. In the spring,
however, many growers devote their beds almost entirely to cucumbers
and eggplant instead of to lettuce and radishes. To the southward the
cloth covers are sufficient to protect the more hardy crops throughout
the winter. To the northward the hardy crops may be grown under sash in
midwinter, and those requiring more heat are grown in the spring.
_Marketing Crops Grown in Frames._--Crops grown in frames are usually
superior in quality and appearance to those grown in the open and
should be given more care in handling and marketing. The cost of
production is somewhat higher than for outdoor crops, and it is
essential that they be put up in neat packages in order to bring the
highest market price. The more successful growers give the work
of gathering, grading, and packing the crop their closest personal
attention and use only clean, attractive packages for handling and
shipping.
The packages employed for handling the frame products are generally the
same as those used for marketing outdoor vegetables, of the same kinds.
In a few instances a distinctive package has been employed. The use
of special shipping packages that would give the frame-grown produce
special recognition on the markets would be a decided advantage to the
grower.--(F. B. 460.)
SOIL AND FERTILIZERS.
The greater portion of the work with frames is conducted on light
or sandy loam soils which are naturally well drained and adapted
to intensive trucking. The original soil is usually employed, but
when necessary rich soil is hauled and placed in the beds. The first
essential is good drainage, and if the land is not naturally well
drained it should be tiled or provided with numerous open ditches to
carry off the water. The surface of the soil should be graded and all
depressions filled in and leveled. For best results the land should be
subjected to two or three years of preparation by manuring and planting
to leguminous crops.
The presence of plenty of organic matter in the soil is very important,
especially where large quantities of commercial fertilizers are to be
used. This organic matter may be added in the form of stable manure,
but more satisfactory results will be obtained where leguminous crops
are included in the preparatory treatment. For green manure nothing is
better than cowpeas as a summer crop and crimson clover as a winter
crop. The crimson clover should be turned under about the time it comes
into full bloom in the spring, the land planted to cowpeas, and the
resulting crop plowed under or mowed for hay during the month of August
in ample time to prepare the land for frame work during the autumn.
When heavy crops of green manure are turned under it is essential that
lime be used to improve the mechanical condition and to sweeten the
soil; a dressing of 1,000 pounds to the acre should be sufficient.
Large quantities of stable manure are used in growing crops in frames,
sometimes as much as 30 to 60 cartloads to the acre. The manure is
generally spread in a broad, flat pile to compost before it is applied
to the soil on which frames are to be located. Where manure is employed
for heating the beds it may afterwards be mixed with the soil for the
growing of subsequent crops. Poultry and sheep manure is excellent
fertilizer for frame work, but the quantity obtainable is very small.
In the application of natural manures of all kinds it is essential that
the manure should be fine; that it be what is termed "short" manure.
WATERING CROPS.
To insure success in the cultivation of plants in frames it is
necessary to provide some means of applying water to the soil.
Occasionally the supply of water can be obtained from the system of
some city, but more often it must be pumped from a well or stream and
stored for use in an elevated tank. Watering is generally done during
the late afternoon, but should be completed early enough to permit the
foliage to become reasonably dry before closing the frames for the
night. If the plants are young and very tender it will be important to
avoid too great a degree of moisture. Serious losses from "damping-off"
often result from excessive moisture, especially at night, when
evaporation is not so rapid as during the day. Many gardeners make
the mistake of watering too often and not doing the work thoroughly.
Under ordinary conditions twice a week will be often enough to apply
water, and in winter, when evaporation is at its lowest point, once
a week will be sufficient. In watering the sash-covered frames it is
necessary either to remove the sash or to prop them up high enough to
permit working under them. As a rule the sash are taken off early in
the morning of a bright day, the soil is stirred, sometimes a little
fertilizer is added, later in the day the bed is watered, and toward
night the sash are replaced.
ANISE.
This is an annual. Leaves used as a garnish. The seeds are the source
of Anise oil. This plant grows well and gives a good yield of seed.
Seeds should be soaked over night in warm water and sown thickly.--(U.
Idaho 10.)
ARTICHOKE, GLOBE.
This plant requires a deep, rich sandy loam, with a liberal supply of
well-rotted manure, is best suited for growing artichokes. Plant the
seeds as soon as the soil is warm in the spring, and when the plants
have formed three or four leaves they may be transplanted to rows 3
feet apart and 2 feet apart in the row. The plants do not produce until
the second season, and in cold localities some form of covering will be
necessary during the winter. This crop is not suited for cultivation
north of the line of zero temperature. After the bed is once
established the plants may be reset each year by using the side shoots
from the base of the old plants. If not reset the bed will continue to
produce for several years, but the burs will not be so large as from
new plants. The bur, or flower bud, is the part used, and the burs
should be gathered before the blossom part appears. If they are removed
and no seed is allowed to form, the plants will continue to produce
until the end of the season.
ARTICHOKE, JERUSALEM.
This useful and productive plant will grow in any good garden soil,
and should be planted three to four feet apart each way, with three or
four small tubers in a hill. If large tubers are used for planting they
should be cut the same as Irish potatoes. Plant as soon as the ground
becomes warm in the spring and cultivate as for corn. A pint of tubers
cut to eyes will plant about thirty hills. The tubers will be ready for
use in October, but may remain in the ground and be dug at any time
during the winter.--(F. B. 255; U. Idaho 10.)
ASPARAGUS.
This valuable plant was formerly a luxury on the tables of the rich,
but is now during the season a vegetable seen daily upon the tables
of people of moderate or even small incomes. It is also frequently
recommended as an article of diet for the sick and convalescent. To the
asparagus grower there are two methods by which plants can be secured,
(1) by purchasing or saving the seed from which to raise them, and (2)
by purchasing the plants from either a seedsman or some grower. Taking
the second method, as being the quickest way to start a bed as well as
the most easily disposed of, it is suggested that roots over two years
old be rejected, and only one-year-old roots selected if a sufficient
number can be secured, as the latter are much better and will in the
course of a few years produce more and larger spears to the plant and
yield profitable crops for a longer period. It is best to deal with
reliable firms; they will be more likely to supply plants of both the
kind and age desired.
_Seed._--Only reliable seedsmen should be trusted, or the seed should
be procured from some neighbor who has the desired variety and has
taken proper care in producing and saving the seed, if the first
plan is to be followed. If one already has an asparagus bed of the
desired sort, producing fine spears, and of the proper age (8 to 12
years old) for seed production, it is always best to save seed from
it for new plantings. The growing of one's own plants is preferable,
both because of the extra year intervening between the determination
to plant and the actual setting out of the bed, thereby permitting
the soil of the proposed bed to be put in a better and more friable
condition, and because, good seed having been secured and proper care
given to the young plants, a more satisfactory supply of the young
roots is obtained. That there are objections to growing one's own seed
is undoubtedly true, but there are also compensating advantages, and
if proper care is exercised it will pay the grower to raise his own
seed (from beds which are satisfactory) even if seed can be bought in
the open market for much less than the trouble of attending to the
home grown may cost. If, however, a grower is unwilling or unable to
exercise the necessary care in the production of seed, he would do
much better not to attempt it, but depend upon some reliable dealer,
studiously avoiding those whose claims to patronage are based upon
cheapness of stock. Good seed are worth good money; poor seed should
not be accepted under any conditions.
_Soil._--Asparagus will grow on most soils, and will yield large crops
upon stiff soils; but for the purpose of the grower for market, a light
sandy soil of fair fertility is much to be preferred, both because of
the earliness with which it produces marketable spears and the ease
with which it is cultivated. A soil on which water stands after rain,
or under which the standing subsurface water is near the surface, into
which the roots are liable to penetrate, is to be avoided. Of course,
such a soil, if otherwise suitable, can be made fit by a thorough
system of under drainage, since an occasional overflow, or even a
submergence of the beds for several days, is not necessarily injurious
if the drainage, either natural or artificial, is good. The soil
should be free of roots, stones, or any trash that will not readily
disintegrate or that will interfere with the growth of the spears. A
rather stiff but naturally well-drained soil which produces early and
fine asparagus, notwithstanding the fact that it is full of large
gravel, some of the stones being twice the size of a man's fist.
_Shade._--Fruit or other trees or high shrubs must not be allowed in
the asparagus bed, because of the shade they throw over the beds and
because their roots make heavy drafts upon the soil. Nor should high
trees, hedges, hills, or buildings be so near as to throw a shadow
upon the beds, because all the sunshine obtainable is needed to bring
the spears quickly to the surface. The land should be protected from
the north or east (or from the direction of the prevalent winds) and
so slope that the full benefit of the sunshine will be obtained during
the whole day. Freedom from weeds is very desirable, even more so than
great fertility, for the latter can be produced by the heavy manuring
which the future cultivation will require; and to the end that weeds
may be few, it is well that for a year or two previous to planting the
land should have been occupied by some hoed crop, such as potatoes,
beets, cabbages, etc.
_Cultivation._--In the late fall or early winter the selected area,
should be a light sandy loam as described above, needs to be deeply
plowed, and if the subsoil is not already of an open and porous nature,
through which surface water will readily drain and the roots easily
penetrate, a subsoil plow should follow, breaking the soil to the
depth of at least 15 inches. After harrowing the field, a good compost
of well-rotted horse, cow, sheep, or other manure should be spread
broadcast and left to the action of the weather until as early in the
spring as the ground is in condition to be worked, when the manure
should be plowed in, the surface carefully harrowed, and the soil put
in a light and friable condition.
As early in the spring as the condition of the ground will permit work
to be done--when it is dry enough to bear plowing and the soil will
break up fine--rows should be marked off 4 to 6 feet apart and opened
up with a large plow, going a sufficient number of times to make a
furrow from 8 to 12 inches deep. Loose soil that the plow does not
throw up should be taken up with a shovel or wide-bladed hoe. It is in
these furrows that the crowns are to be set, the distance to be left
between plants varying, according to the opinion of the grower, from 18
inches to 5 feet.
_Planting._--Rows should be run north and south, so that the full
benefit of the sunshine will be secured. If the rows run east and
west, they will be shaded by the ridges in early spring, when the sun
is low in the south, and later in the season they will be completely
shaded on one side by the tall foliage. This delays sprouting in the
spring, and prevents the best development of the plants at all times.
Of course, any conditions, such as the slope of the land, etc., which
make it inadvisable to run the rows north and south must be considered,
but southeast to northwest or northeast to southwest is better than
due east or west, or, in short, the natural conditions permitting,
the course should be as far from east and west as possible. This is
especially important to those who ridge the rows to produce white
asparagus. Early in the spring of each year, after the plants are old
enough to cut, there must be a ridge made over the rows to blanch the
shoots, if white asparagus is to be cut; and once ridging is not
sufficient, but after the spears begin to appear the ridges will need
renewing every week or ten days during the cutting season, as the rains
beat them down and the sun bakes a crust upon the top. The grower of
green asparagus has about the same work, less the ridging and plowing
down. As it is necessary to keep down all weeds, some hoeing may be
necessary as supplementary to a free use of the 1-horse cultivator.
After the cutting season, a cutaway harrow run twice diagonally across
the rows loosens up the soil and destroys a vast number of weeds
without injury to the crowns, although some spears may be broken off.
_Brush._--The bushes should be cut as soon as the berries are fully
colored, as the growth will be sufficiently matured so that no injury
will be done the roots by removing the tops, thus avoiding a further
drain upon the roots to mature the seed, and preventing the dropping
of seed, followed by the springing up of innumerable young asparagus
plants.
All brush should be promptly collected and burned, that there may be
no lodging places for insects and diseases. In case the fields were
not leveled, harrowed, and manured at the close of the cutting season,
now is a convenient time to perform this work, although if the soil
is rather too moist it is well to leave the surface firm, that the
winter rains may run off rather than penetrate to the already too damp
subsoil around the roots.
_Manuring._--In nothing relating to asparagus has there been a greater
change than in the practice of manuring. Formerly it was thought
necessary to place large quantities of manure in the bottom of the
deep trenches in which the young plants were set out in order that
sufficient fertility might be present for several years for the roots,
as after the plants were once planted there would be no further
opportunity to apply the manure in such an advantageous place; it was
also considered necessary to use much manure every autumn to bank the
beds in order that the crowns should not be injured by the winter's
frost. These applications, especially that given prior to planting the
young crowns, made the outlay so great, and that for so many years
before any return would be received from the bed, that only small
plantings were possible to those who were without considerable capital.
Although asparagus is still heavily manured, the amount now used is
much less than was formerly supposed to be necessary, only about
double the quantity ordinarily used upon root crops, such as potatoes,
beets, etc. It is not a good practice to put manure in the bottom of
the trenches or furrows when setting out the crowns, because it is
demonstrated to be rather a waste of manure than otherwise, and besides
the roots of asparagus thrive better when resting upon a more compact
soil; nor is it necessary that the soil should contain great amounts
of humus or be in an extremely fertile condition when the plants are
first put out, since by the present system of top dressing a moderately
fertile soil soon becomes exceedingly rich and equal to the demands
which the plants make upon it. Considerable improvement is produced
in the mechanical condition of the soil by the use of stable manure
upon beds. By the addition of humus, porous sandy soil is made somewhat
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