The true plant lover will invariably want to increase his/her own
stock of house plants, particularly when they discover just how
rewarding home propagation can be. The various methods (cuttings,
division, air layering, and seed sowing) are as follows:
Cuttings
The
simplest method of growing roots on cutting is still: put it in a
bottle of water. Moreover, you have the added pleasure of actually
seeing the roots grow. Choose a fresh tip or sideshoot 6-10 cms long
from the most vigorous growth of the plant and cut cleanly across just
beneath a node, the point where the leaf is attached to the stem.
Remove
the lower leaves from the cutting and place it in a bottle of water,
but make sure that the base of the cutting does not touch the bottom of
the bottle. Roots have the best chance of the developing about halfway
down the bottle.
As soon as the cutting has grown a nice show of
healthy roots it can be planted in ordinary potting compost. However,
after two weeks there are still no roots visible, you can try planting
the cutting in peat fibre leafmould, or a proprietary rooting medium.
Suitable
plants for this method are: Aphelandra, Begonia Corallina, Coleus,
Cyperus, Fuchsia, Gynura, Hedera, Hypoestes, Impatiens, Iresine,
Tradescantia, and so on.
There are also plants that root easily if
we use sections of the stem. In this way, several cuttings can be
cultivated from one stem. Plants that lend themselves well to this are:
Cissus, Cordyline, Terminalis, dracaena, Fatshedera, Fatsia, Hedera,
Passiflora, Syngonium, and so on.
The stem sections must have at
least 3 leaves or leaf buds (eyes). Place them vertically in the rooting
compost or lay them horizontally on the compost and three quarters
cover them wit the soil.
Division
Some Plants can be
propagated by simply dividing them up into pieces. This is an ideal
method for plants that grow from more than one stem, such as ferns,
plants that have a rootstock (rhizome) and those that develop offshoots.
The first mentioned entails separating the clump of root into sections
by gently teasing them apart, making sure that each separate piece has
some top growth attached to it.
Plants with rhizomes, such as
Sanseviera can best be divided by cutting through the root system with a
sharp sterilized knife, in such away that each cutaway section retains
at least one shoot as well as a portion of the original root system.
Air Layering
A
less simple method of propagating plants that are often too woody to
roots normally. Air layering is used on plants with a woody stem, such
as Ficus. It is ideal for shortening a plant that has gown too tall.
Compact
new plants can be produced by making a clean, diagonal cut to the core
of the stem at the place from which you wish to root. A match should
then be placed in the split to prevent it from healing. The split or
wound is then smeared with mixture of rooting powder and lanoline.
The
treated section is subsequently packed around with dampened sphagnum
moss, and finally wrapped in a pieces of plastic that is securely sealed
at the bottom and top.
When a well developed root growth is
visible through the moss, the packing can be removed. The plant stem is
then cut just below the rooted top section, which can now be safely
potted up. The plant it self should not be watered over the soil during
this period.
Seed Sowing
Raising house plants
from the seed is a relatively uncommon practice among home plant
cultivators, be it only because you can suddenly find yourself with a
host of plants for one and the same species.
Though there is an
element of surprise with this method, you never quite now what is going
to come up. Seedlings can deviated considerably from the parent plant in
both color and markings, while cuttings will always give you and exact
replica of the original plant.
Although it is tempting to use seed
from your own house plants, it is recommended that you buy the seed you
need from professional nurserymen, since this taken from the best
specimens. Take care not to use old seed, as most seeds do not retain
their germinating power for long.
Sow seeds close to the surface
so that they are not cut off from the air. As a rule, the thin layer of
earth covering the seeds should not be thicker than the seeds
themselves. Seeds need moisture in order to germinate. This is best
applied with a spray rather than the spout of watering can.
Ground
warmth is absolutely essential. With the seeds of house plants that are
accustomed to overwinter in a cool environment, place a box or tray of
small seed pots on the warm mantelpiece or radiator. Tropical plant
seeds, however, need a soil warmth of 22-30oC in order to germinate.

