A dictionary of modern gardening - University Library

CAM 118 CAN
often declining in production after such
lapse of time.
Cultivation.—They should not be
planted nearer to each other than
eighteen inches, as that also gives an
opportunity to employ the hoe. Water
must be given moderately at the time of I
planting, if dry weather. If raised from
seed they recjnire no further cultivation
than to be kept free from weeds in the
seed-bed ; and when three or four
inches high, to be thinned to about six
inches apart, and may remain thus until
the following spring, then to be thinned
and remain, or to be removed to the
house herbaceous perennials. Cuttings
or division. Light loam and peat.
CANDLEBERRY MYRTLE. Myrtica.
CANDOLLEA. Four species. Green-
house evergreen shrubs. Cuttings.
Loam, peat and sand.
CANDY TUFT. Iheris.
CANELLA. Two species. Stove
evergreen trees. Ripe leafy Cuttings.
Loam, peat and sand.
CANKER. This disease is accompanied
by different symptoms, according
to the species of the tree which it infects.
In some of those whose true sap
contains a considerable quantity of free
dry
above-mentioned distance apart. A
very small bed will supply the largest acid, as in the genus Pyrus, it is rarely
family
accompanied by any discharge. To this
Gathering
-In July, the flowers are '
generally in perfection for gathering ; ^ to
the period for performing it, however
must be governed by the flowers themselves,
as the best time is when they
are just ojiened. Particular care must
be taken to dry them thoroughly before
they are stored, otherwise they will not
keep. Ifseed be required, the only attention
necessary is to leave some of the
first opening flowers ungathered ; the
seed will ripen early in September,
when it may be dried and rubbed out.
CAMPANULA. One hundred and
thirty-nine species, and many varieties.
Chiefly hardy herbaceous perennials;
some green-house or hardy annuals, biennials,
and evergreen shrubs.
Dr. Lindley, writing of their propagation,
says :—'•' Either sow the seeds,
or pot cuttings' from the old roots, in
leaf mould and sandy peat; as soon
as they are strong enough, pot them
oif in sixty-sized pots regularly, shifting
them into larger sizes as the
plants require them; when they have
gained a little strength, give them a
rich loamy soil, well incorporated with
a small proportion of bone dust, and at
intervals supply them liberally with
manure water.''
—
Card. Chron.
CAMPELIA zanonia. Stove herbaceous
perennial. Seeds. Rich soil.
CAMPHOR TREE. Cinnamomum
camphora.
. CAMPION.
Cucubatus.
CAMPYLANTHUS saholoides.
Green-house evergreen shrub. Cuttings.
Sandy loam and peat.
CANADA ONION. See Onion.
CANARINA. Two species. Green-
form of the disease it would be well
confine the term canker, and to give
it the scientific name of gangra^na sicca.
In other trees, whose sap is characterized
by abounding in astringent or mucilaginous
constituents, it is usually attended
by a sanious discharge. In such
instances it might strictly be designated
ulcer, or gangraina saniosa. This disease
has a considerable resemblance to
the tendency to ossification, which appears
in most aged animals, arising from
their marked appetency to secrete the
calcareous saline compoundsthatchiefly
constitute their skeletons. The consequence
is, an enlargement of the joints,
and ossification of the circulatory vessels
and other parts, phenomena very
analogous to those attending the cankering
of trees. As in animals, this tendency
is generally throughout their system,
but as is observed by Mr. Knight,
" like the mortification in the limbs of
elderly people, it may be determined
as to its point of attack by the irritability
of that part of the system."
This disease commences with an enlargement
of the vessels of the bark of
a branch or of the stem. This swelling
invariably attends the disease when it
attacks the apple tree. In the pear the
enlargement is less, yet it is always
present. In the elm and the oak sometimes
no swelling occurs; and in the
peach I do not recollect to have seen
any. I have never observed the disease
in the cherry-tree, nor in any of the
pine tribe. The swelling is soon communicated
to the wood, which if laid
open to view on its first appearance by
the removal of the bark, exhibits no
marks of disease bevond the mere un-