AUTUMN PROPAGATION
We all love the
challenge of growing our own plants, either from seed or cuttings. In this
modern day of busy lifestyles most folk will buy plants ready to plant or
flower direct from the garden centre, but it just doesn’t give you the same
pleasure as those propagated by yourself. You then have spare plants to fill up
empty corners, increase the drift size of those plants that like to make an
impact, or just have a few spare plants to give to gardening friends. Some
plants are very easy, some more challenging and there is always failures, but
still we keep trying.
Cuttings in pots and boxes |
Houttuynias potted up |
In spring many
plants are grown from seed and soft wood cuttings but in late summer growth on
most plants have matured so cuttings are less likely to rot. Summer bedding
plants like geraniums, fuchsias and Impatiens (Busy Lizzie) are easy to grow
and young plants can be overwintered on a windowsill in a frost free room. Both
geraniums and Impatiens can then be allowed to flower as a houseplant. Keep an
eye open for red spider and small greenfly which are attracted to Busy Lizzie’s
soft shoots. Geranium cuttings only need one decent leaf at the end of each
shoot and a couple of inches of shoot which can be snapped off cleanly at a
leaf joint. Fuchsias
are best as a four inch terminal shoot with lower leaves
removed and cut underneath a node. Both can be inserted into a sandy compost in
shallow pots where they will root after several weeks. Impatiens are even
easier as shoots (remove lower leaves) about four inches long are just popped
into a jar of water, placed on a shaded window sill and left to root. Once
rooting is strong enough they can be removed and potted up into individual small
pots.
Splitting up flag iris |
Impatiens cuttings in water |
Outdoors many shrubs
can be propagated by taking cuttings six to eight inches long, removing lower
leaves and lining out a few inches apart in well drained compost in the shelter
of a cold frame or other form of protection. They are normally left there till
growth starts in spring when they can be lifted and potted up. Rosemary, Lavender,
Ceanothus, Pyracantha, Euonymus and Cistus can all be propagated this way,
though the last two are best when cuttings are taken with a heel.
Heathers, both Erica
and Calluna can be propagated from cuttings three to four inches long inserted
in a sandy medium in shallow seed trays placed quite close together and kept in
a cool greenhouse with some shade. Give them some mist spray to keep them moist
and leave them till spring.
Peonies getting divided up |
Japanese azaleas can
be propagated from both cuttings and layering. Take cuttings the same as
heathers but with shoots that may be branched. As these shrubs lie close to the
ground they are easy to layer by placing a side branch down to ground level,
putting some soil on the top and keep it there with a metal peg or flat stone.
Garden Pinks can be
propagated from young shoots broken off as long as possible and dibbled around
the sides of a pot filled with sandy compost. Place these pots in a cold frame
or greenhouse.
Mint is very easy to
propagate as it layers itself and roots into the soil as it grows so just pull
up a few shoots with roots on and pot up to grow on.
Over on the
herbaceous border most of the plants have finished their flowering and growing
so now is a good time to lift clumps of peonies, iris, oriental poppies, Shasta
daisies and many other types, split them up and replant in fresh soil to which
some compost has been added.
Wee jobs to do this week
Sorting out potatoes for storing |
Maincrop and late
potatoes are best lifted now if the foliage has been wiped out by blight as
they will not grow any bigger and the longer they are in the soil the chance
for slugs to damage them.
Leave them on the
surface for an hour or so to dry up before bringing them home for storage, but
sort out any damaged tubers before storing in an airy but cool dark place. I
separate out small but usable spuds from the main batch and these are great
boiled and kept in their skins with salads or other dishes.
END