THE CULTURE OF VEGETABLES AND FLOWERS FROM SEEDS AND ROOTS
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be done with judgment, or the plants will lose their healthy colour and
assume a yellowish tinge. Insufficient drainage has a precisely similar
effect. In about ten days air may be given more freely, and then no
suitable opportunity of exposure should be lost.
In raising Petunias for bedding, the same conditions are applicable;
but as it is useless to put them into the open ground until the weather
is warm and settled, the sowing need not be made until the end of
February or the beginning of March. And for bedding there is no
occasion to put the plants into larger pots than the 60-size. It will
be necessary to give these seedlings shade in their young state, after
they have been pricked off or potted.
The beds or borders intended for Petunias will be better without recent
manure, for this tends to the excessive production of foliage and
defers the flowering until late in the season. Do not be tempted by the
first sunny day to put them out, but wait for settled weather. A
cutting east wind, such as we sometimes have in May, will ruin them
irretrievably. Each plant of the tall class will occupy a space of two
feet, and the dwarfs may be one foot apart.
In potting Petunias, those which are weakly among the singles will
probably produce the most valued colours, and from seed sown for
doubles it may be accepted as a rule that from the feebler seedlings
the finest rosette-shaped flowers may be expected.
All Petunias are impatient of being pot-bound, and this applies
especially to the double varieties. They will, if treated generously,
do ample justice to the 8-or even the 10-inch size. The growth should
not be hurried at any stage, and if the foliage has a dark, healthy,
green colour, free from blight, there will be magnificent flowers four
or five inches across. The final shift should be into a sound compost,
consisting, if possible, of good loam and leaf-mould in equal parts,
with sufficient sand added to insure drainage. About a fortnight later
commence giving weak manure water once a week instead of the ordinary
watering, and as the buds appear it may be increased in strength, and
be administered twice a week until the flowers expand.
Petunias are accommodating in their growth, and may be trained into
various forms. The pyramid and fan-shape are most common, and the least
objectionable. We confess, however, to a feeling of antipathy to
fanciful shapes in plants, no matter what they may be. It is a
necessity of our artificial conditions of culture that many of them
should be trained and tied to produce shapely specimens, but the more
nearly the gardener’s art approaches Nature, the greater pleasure we
derive from his labours.
PHLOX DRUMMONDII
Half-hardy annual
Those who are acquainted with the older forms of this annual might fail
to recognise a friend under its new and improved appearance. There are
now several beautiful types, each possessing characteristics of its
own, and all producing flowers that are perfect in form and brilliant
in colour. The large-flowered section produces splendid bedding plants,
but the dwarf compact varieties are also highly prized for effective
massing and general usefulness. The latter attain a height seldom
exceeding six inches, and are therefore eminently suitable for edgings
and borders, as well as for bedding. They bloom profusely for a long
period, not only in the open ground, but also as pot plants in the
greenhouse or conservatory, where they are conspicuous for the richness
of their display.
For early flowering sow seed of all the varieties in February or March
in well-drained pans or shallow boxes. Any good sifted soil, made firm,
will suit them, and every seed should be separately pressed in,
allowing about an inch between each; then cover with fine soil. This
will generally give sufficient space between the plants to save
pricking off; but if the growth becomes so strong as to render a
transfer necessary, lift every alternate plant, fill the vacant spots
with soil, and those left will have room to develop. Pot the plants
that are taken out, give them a start in a frame, and shade from direct
sunshine. Phloxes should not be coddled; the best results are always
obtained from sturdy plants which have been hardened as far as possible
by free access of air from their earliest stage of growth. This does
not imply that they are to be rudely transferred from protection to the
open air. The change can easily be managed gradually until some genial
evening makes it perfectly safe to expose them fully. A space of about
two feet each way is required for each plant of the large-flowered
class, but a more modest allowance of nine or twelve inches will
suffice for the dwarf varieties. Before they are put out the plants
must be free from aphis; if not, fumigation should be resorted to once
or twice until there is a clearance of the pest. Seed of the annual
Phlox may also be sown in the open ground during the latter part of
May, and the plants will flower abundantly from mid-August until frost
destroys them.
The employment of Phlox as pot plants has already been alluded to, but
special mention must be made of Purity, which is by far the most
valuable of all the varieties for blooming indoors. The pure white
flowers, which are sweetly scented, may be produced at almost any
period of the year. They are, perhaps, more highly appreciated at
Easter than at any other time, and to insure a display at that season
seed should be sown in September or October. The plants will do well if
grown on in a cold frame, the final shift being into pots of the
48-size. When grown under glass, Phlox should be given treatment as
nearly hardy as possible, all that is necessary in regulating
temperature being the exclusion of frost from the greenhouse or frame.
PHLOX, PERENNIAL
Hardy perennial
The seed of perennial Phlox is very slow and erratic in germinating,
and from a sowing made in September the seedlings may not appear until
the following spring. Seed may also be sown in the first week of March
in shallow boxes, and put into moderate heat. In due time prick out
into boxes filled with light rich soil, and having hardened them in the
usual way, plant out a foot apart in a good bed, and help, if needful,
with an occasional watering.
PICOTEE
Dianthus Caryophyllus fl. pi. Hardy perennial
Seedling Picotees are extremely robust and free-flowering, and seed
saved from the best types will produce handsome specimens. The
instructions for growing Carnation—sowing in pans from April to August
and transplanting when large enough—are equally applicable to the
Picotee.
PINK
Dianthus plumarius. Hardy perennial
This old English flower is valued in every garden. Both the double and
single varieties are easily raised from seed and the plants bloom with
the greatest freedom. Seed may be sown any time from April to August.
Treat the seedlings in the manner advised for Carnations, and in due
course transfer to open quarters. The foliage maintains its colour
during the severest winter, and is therefore worth consideration for
furnishing the border, to say nothing of the abundant display of
perfumed flowers which the plants afford in early summer.
POLYANTHUS
Primula (veris) elatior. Hardy perennial
A sowing in February or March in pans will produce strong specimens for
flowering in the following year. Or seed may be sown from May to July
on a shady border. Prick off the seedlings when large enough to handle.
The plants should never flag for want of water, and green fly must be
kept down by syringing. Some good solution will be necessary against
red spider if through starvation in a dry situation it has been
permitted to gain a footing. All the varieties can be grown in a bed
with a cool shaded aspect. They do not require a rich soil; a strong
and fibrous loam with a little leaf-mould is sufficient. On passing out
of flower the plants will split up into several heads, when they may be
separated and potted singly. Exquisite colour effects can be created by
planting Polyanthus in association with beds of Tulips for flowering in
April.
POPPY
Papaver. Hardy annual and hardy perennial
The recent developments of this flower have brought it into great and
deserved popularity, and it may be safely affirmed that few other
subjects in our gardens afford a more imposing display of brilliant
colouring during the blooming period. The delicate beauty of the
Shirley Poppies is alone sufficient to create a reputation for the
entire class, and the huge flowers of the double varieties make a
gorgeous show. All the varieties are eminently adapted for enlivening
shrubbery borders and the sides of carriage-drives.
Seeds of Annual Poppies should be sown where the plants are intended to
flower, because it is difficult to transplant with any measure of
success. During March or April sow in lines or groups, _and thin to
about a foot apart_. Large clumps of some of the bolder colours should
be sown in spots that are visible from a distance, and they will
present glowing masses of flowers.
By sowing seeds of Perennial Poppies in pans in March, and putting out
the seedlings when large enough, the plants will flower the same year.
The more general practice, however, is to sow very thinly on a
well-prepared border any time from May to August. Keep the seedlings
free from weeds, and thin out if necessary. The plants may be
transferred to permanent quarters early in autumn or in the spring
months.
PORTULACA
Purslane. Half-hardy annual
This is a splendid subject when the weather favours it. In a dry hot
season, and on a sandy soil, Portulacas can be grown as easily as
Cress. Sowings are sometimes made early in the year in greenhouses or
frames; but as a rule it is a vain attempt. Wait until May or June,
when the weather appears settled; then put the seed into the open
border, and the lighter the soil, and the hotter the season, the more
brilliant will be the display of flowers. Sow on raised beds, in rows
six or nine inches apart, and cover the seed with sand or fine earth.
If the plants appear to be injuriously close they must be thinned.
Should a period of rain ensue, the raised beds have a distinct
advantage over a flat surface, and rows afford opportunity for stirring
the soil and keeping down weeds.
PRIMROSE
Primula vulgaris. Hardy perennial
The mere name of this flower is sufficient to recall visions of spring
and perhaps of happy visits to its haunts in days gone by. But many
ardent lovers of the Primrose may not know that the strains which are
now in favour embrace a wide range of colour, from pure white to deep
crimson or maroon, various shades of yellow and orange, and rich blue.
In fact, in a batch of seedlings nearly every plant may differ from its
companions. They all agree, however, in possessing the delicate perfume
which is characteristic of the hardy woodland favourite. Fancy
Primroses are prized as pot and border flowers, and they fully reward
florists for all the care which has been devoted to their improvement.
They will bloom satisfactorily in any shady spot; but to grow them to
perfection requires a stiff moist loam, on the north side of some hedge
or shrubbery, where glimpses of sunshine occasionally play upon them.
Here large flowers, intense in colour, will be abundantly produced far
into the spring.
The finest plants are generally obtained from a February or March
sowing made in pans or boxes. Seed may also be sown from May to July in
carefully prepared ground in the open. If inclined to take some pains
in raising the plants—and they are certainly worth it—make the summer
sowings in seed-pans in ordinary potting soil; sprinkle a little sand
over the seed, and as a finish press firmly down. Sheets of glass laid
over the pans and turned daily will prevent rapid evaporation and help
to keep the soil uniformly moist. The seedlings either may be potted
once, and then be planted out, or, if strong enough, they may be
transferred straight to flowering positions. Should this mode of
procedure be considered too troublesome, prepare a shady patch of
ground by deep digging; make it firm and level, and on this sow in
shallow drills, covering the seed very lightly. A dressing of soot over
the surface, and a cordon of ashes round it, will keep off slugs. Thin
if necessary, and when the plants are strong enough, remove to their
proper quarters. In February the buds will begin to show, and those
intended for pots should be allowed to reveal their colours before they
are taken up, so that a variety may be obtained. From a retentive soil
each plant with its surrounding earth may be taken out almost exactly
of the size required, and it should be rather smaller than the pot
which has to accommodate it. A light soil must be watered the day
before the operation, or the roots will be injuriously exposed. When
potted, place the plants in a shaded cold frame or greenhouse, allowing
them plenty of space, and withhold water until it is absolutely
necessary. At first they should be kept close, but as the roots become
established gradually give air more and more freely. Cool, slow
treatment is all that is required. Any attempt to hurry the growth will
only weaken the plants and ruin the colour of the flowers. Just before
the buds open, one or two applications of manure water will be
beneficial. When the display in pots is over, if the plants are put out
in a shady border, they may flower again late in the season.
PRIMULA SINENSIS
Chinese Primrose. Greenhouse annual
The history of the Chinese Primula since it first reached this country
has an almost romantic interest. As originally received the flower was,
and now is, insignificant in size and miserably poor in colour. But
florists at once perceived in it immense possibilities. The result of
their labours, extending over many years, may be seen in the
magnificent Single, Double, and Star Primulas which now adorn
conservatories, greenhouses, and homes. From so small a beginning the
range of colours is amazing; there are snowy-white flowers in several
beautiful forms, a pure Cambridge blue, rich violet-blue, many shades
of rose, pink, scarlet, and gorgeous crimson. Almost equally striking
is the improvement in the foliage, especially the introduction of the
fern-leaf, with its diverse shades of green and richly toned
under-surface.
To enjoy the bloom for a long period make successive sowings in May and
June. A further sowing may be made in July if necessary. Use new pots
which have been soaked in water; but if these are not at hand, scrub
some old pots clean, for Primulas are fastidious from the outset, and
it is by apparent trifles that some growers produce plants so immensely
superior to others treated with less care. Provide free drainage, and
place a little dry moss over the crocks. Any fairly good rich soil will
be suitable, but a mixture of equal parts of sound fibrous loam and
leaf-mould, with a small addition of silver sand, is best. Press this
compost firmly into the pots to within half an inch of the top. Water
before sowing, and sprinkle sufficient sand over the surface to cover
the soil. On this sand sow evenly and thinly, for it is well known that
the finest new Primula seed comes up irregularly, and a thin sowing
admits of the removal of plants that may be ready, without disturbing
the remainder. Cover the seed with just enough fine soil to hide the
sand, and gently press the surface. Place the pots in a sheltered part
of the greenhouse, protected from draughts and direct sunlight; a small
glazed frame will be useful for this purpose. While the seed is
germinating the temperature should not rise above 70°, or fall below
50°. Immediately the plants are large enough, prick off round the rim
of small pots, and if convenient place them in a propagating box. Water
with care, and shade if necessary. When established give air, which
should be daily increased until the plants will bear placing on the
greenhouse stage. Transfer singly to thumb pots, and subsequently shift
into larger sizes as may be requisite, but never do this until the pots
are filled with roots, and always put the plants in firmly up to the
collar. During July, August, and up to the middle of September expose
freely to the air in any convenient position where shelter can be given
in unfavourable weather.
Where there is no greenhouse, but only a hot-bed, it is still possible
to grow good Primulas, with care and patience. The instructions given
for treatment in the greenhouse may easily be adapted to the pit or
frame, only there must be a little more watchfulness in affording shade
on sunny days to prevent overheating.
Endeavour to give the plants a robust constitution from the first, for
weak, rickety things cannot produce a satisfactory bloom. Primulas need
a long period of growth before they flower; hence they should never be
subjected to a forcing temperature. Sufficient heat must be provided to
raise the plants, but afterwards the aim should be to render Primulas
as nearly hardy as possible before cold weather sets in. There must,
however, be ample protection against frost, damp, and cutting winds.
Primula stellata (_Star Primula_).—This elegant strain of Primula,
introduced by us in 1895, has attained a high position in popular
favour. Although it is not intended to supersede or compete with the
splendid strains of _P. sinensis_, it is a most valuable addition to
the conservatory, and will be found indispensable for general
decorative work. The plants are unusually floriferous and continue in
bloom for a long time. When cut, the sprays travel well and remain
fresh in water many days. For table adornment Star Primulas are
unsurpassed by any other greenhouse flower at their own period of the
year. The culture is precisely the same as for _P. sinensis_.
Half-hardy Primula.—This section, which embraces a number of very
charming species, includes the well-known _P. obconica grandiflora,_
which is almost perpetual-blooming under glass. Seed of this Primula
may be sown from February to July, from the earliest of which the
plants will flower in autumn and continue to bloom throughout the
winter. In the early stages the seedlings may be managed as already
directed for _P. sinensis_, bearing in mind that excessive watering
should be avoided. Cool greenhouse treatment will suit the plants well.
Another half-hardy variety which has recently attained wide popularity
is _P. malacoides_. The dainty flowers are produced tier upon tier to a
height of about two feet and are very sweetly perfumed. For a winter
display sow in February, and successional sowings may be made until
July. _P. malacoides_ especially resents a forcing temperature.
Therefore the culture should be as nearly hardy as possible, and even
in the seedling stage the plants must have free access of air on all
suitable occasions, or they are very liable to damp off.
Hardy Primula.—A number of very elegant garden Primulas are worthy of
attention. The majority answer well when grown in borders, but they are
especially at home in rock or Alpine gardens. The family is now so
large and so variable in time of blooming that it is possible to have
the different species in flower during almost every month of the year.
As a rule, it is advisable to raise the seedlings in pots or pans
placed in a frame or greenhouse, and to transfer them to the open
ground when thoroughly hardened off.
RANUNCULUS
Half-hardy perennial
The Ranunculus can be grown either from seed or from roots. The seed is
thinly sown from January to March, in boxes four to six inches deep,
filled with good soil. A cool greenhouse or frame is the proper place
for the boxes until the spring is somewhat advanced. A little extra
care is requisite to insure free growth and a hardy constitution, and
the roots should not be turned out of the boxes until they have ceased
growing and are quite ripe; then they may be stored for planting in
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