With
a fantastic range of herbaceous perennials (those plants that
die back to soil level in the autumn and reappear the following
spring) and shrubs available at the garden centre you may not
have given much thought to increasing your plant stocks in other
ways. However you can do these fairly easily by taking cuttings
this time of year provided you supply them with the right conditions.
Clematis, Honeysuckle, Fuchsia, Lavender, Penstemon, Hydrangea,
Rosemary and Pinks will root fairly easily in pots filled with
a mixture of 2/3 multi purpose compost and 1/3 perlite or horticultural
sand to aid drainage.
Gently
pull new shoots away from the parent plant rather than cutting
them, leaving a small portion of older wood, called a heal, at
the base of each cutting. Where you cannot pull stems off as in
the case of Penstemon or Heliotrope, cut the stem with a very
sharp knife half way between the leaf joints leaving one pair
of leaves. With Clematis, cut the stem halfway between the leaf
joints leaving one pair of leaves.
With
all the cuttings trim large leaves to reduce the surface area
and dip the bases of all into hormone rooting powder. Ensure that
any leaves that would go below the surface of the compost are
removed and place the cuttings into the compost mixture.
Water
and cover the entire pot and cuttings with a white, not clear,
polythene bag. This will provide good light but blocks direct
sunlight that would otherwise shrivel the leaves.
Every
ten days or so water the cuttings lightly and spray with a fungicide
if necessary. Let the air circulate around them for five to ten
minutes. Once the cuttings have developed roots, transplant them
into individual pots and gradually harden them off. As a general
rule 'softwood' cuttings, those cuttings from the tips of new
shoots, are taken in spring tend to root more readily. 'Greenwood'
cuttings are those garnered from early to mid summer when the
wood is more mature. Although these type of cuttings can be slightly
more difficult to root they do tend to survive better than softwood
cuttings.
In
late summer take semi-ripe cuttings - those shoots that are from
the current season's growth, soft at the top but firm at the base.
Remove any side shoots from the main stem and trim side-shoots
to four to six inches (10-15cm) long, making the cut just below
a leaf node. Trim off the soft tip of each cutting and remove
the lowest pair of leaves. To help stimulate rooting 'wound' the
cutting by slicing away a piece of bark one to one and a half
inches (2.5 Ð 4cm) long from one side of the base. Dip into hormone
rooting powder, tap off the excess, and pot up.
Hardwood
cuttings, as the name suggests, are those that are fully mature
and are taken at the end of the growing season from autumn right
through to spring. They are, by far, the easiest to maintain but
can be quite slow to root. Shrubs such as Holly (Ilex) and Rhododendron
are better propagated as semi-ripe or hardwood cuttings.
Other
ways of propagation may sound complicated but can be quite simple
and fun to do. 'Layering' is one such method and many deciduous
and evergreen shrubs can be successfully multiplied this way although
it is fair to say that you do need a little bit of practise!
The
principle behind layering is to actually encourage a stem to produce
roots before severing it from the parent plant. In spring or early
summer select a stem or branch low to the ground (Clematis is
a good one!) and strip off any leaves and side shoots except for
those on the growing tip. Partially cut through the stem, dust
with hormone rooting powder and peg the stem either side of the
cut into a small, prepared trench. Infill the trench, leaving
the growing tip exposed, firm the soil and ensure the area remains
moist. By the autumn the stem should have developed its own root
system at which point it can be severed from the parent plant
and potted up or planted out.
Propagating
your own plants, by whichever method, can not only save you money
but also offers a great sense of satisfaction. Why not try it
yourself?