Ontario Teachers' Manuals: Nature StudyOntario. Department of Education
Science
Ontario Teachers' Manuals: Nature Study
Ontario. Department of Education
Nature study; Science -- Study and teaching (Elementary) -- Ontario
Pupils in this Form should try to grow such woody plants as roses and
grapes from cuttings. Roses are frequently propagated by budding, as in
the case of apples and peaches. They may also be grown upon their own
roots or from stem cuttings. Such cuttings should be from well-matured
wood of the present year taken in the autumn and packed in moist sand
over the winter. Make the cuttings about three inches in length. The top
end should be cut off immediately above a bud and the bottom end just
below a bud, as roots seem to start more readily from a node, or bud.
Such a cutting may have three or four buds of which only the upper two
need be left. If both of these grow, the poorer one may afterwards be
removed.
These rose cuttings should then be inserted in a box of clean, moist
sand to a depth of two inches, kept in a warm room, and shaded with a
sheet of newspaper when the sun is very bright. Keep the sand moist but
not wet, and when possible have gentle bottom heat. When roots have made
some growth, transplant carefully into small flower-pots, using fairly
rich, clay loam. In a few weeks they will be ready to plant out in the
garden.
Grape cuttings should be taken late in the fall when the vines are well
matured. Such a cutting includes only two joints, the upper one being
the growing end and the lower the rooting end. They must be stored over
winter in cold, moist sand, but should not be permitted to freeze. As
soon as the ground can be prepared in the spring, set them out. They
should be placed on a slant of about forty-five degrees and covered all
but the top bud.
LEAF CUTTINGS
Some plants with large and vigorous leaves, such as many of the
begonias, may be propagated by means of leaf cuttings. Buds readily
develop from cuts made in the large veins. Take a full-grown healthy
leaf and remove the stem all but about half an inch. Make a few cuts
across the larger veins on the under side of the leaves at points where
main veins branch. Press the leaf firmly down on the top of a box of
moist sand with the under side next the sand. Keep the leaf in this
position, using small stones or little pegs pushed through the leaf into
the sand. Put the box in a warm room and do not let the sand become dry.
When roots strike into the sand and buds develop from the points where
the veins were wounded, take a sharp knife and cut out the new plant
from the old leaf and transplant it into a small flower-pot in good
soil. Sink the pot in a box of moist sand to prevent its drying out.
ROOT CUTTINGS
Such plants as "sprout from the roots" may be propagated by root
cuttings. Sections of underground stems may also come under this
heading, as in the case of horseradish cuttings. But real roots may be
used for cuttings, as in the case of the blackberry and raspberry. The
roots should be cut in pieces three or four inches long, planted in a
horizontal position, and entirely covered with two or three inches of
soil.
LAYERING
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