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CARNIVOROUS
PLANTS - their care in cultivation
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Dionaea muscipula - Venus Flytrap
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Stand
in 1/2 - 1 inch water (rainwater or boiled and cooled tapwater
ideally) through the summer in full sun (a south-facing windowsill
is ideal).
In
the winter months (October-March), the plant will experience
a natural dormant period and should be kept cool (0-10oC) and
watering should be reduced until the soil is just moist. Lighting
may also be reduced while the plant is dormant. Some or all
the leaves will die back - this is no cause for concern, and
is entirely natural as nutrients are drawn down into the resting
bud of the plant. Dead leaves may be removed to discourage
mould or disease.
New
growth will resume in the Spring when warm conditions are restored,
and healthy plants which have undergone good dormancy conditions
will flower in April-May.
It is not necessary to feed these plants, but if this is done, it must
be with live insects - the struggling of the prey is necessary for
proper trap functioning and enzyme production. Lumps of meat, plant
fertiliser, fish food, etc. are not suitable food, and will cause premature
ageing of the trap with a risk of rotting. Excessive triggering of
the traps will also prematurely age them, tiring the plant. Each trap
is capable of catching and digesting 2-4 insects, after which it will
naturally die back to be replaced by new traps.
Repot
every year or two in the Spring in a mix of 2 parts peat to 1 part
coarse sand. Healthy plants will produce offset plants that can
be divided and potted up separately.
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Sarracenia species - Pitcher Plants
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Stand
in 1/2 - 1 inch water (rainwater or boiled and cooled tapwater
ideally) through the summer in full sun (outdoors or on a south-facing
windowsill is ideal).
In
the winter months (October-March), the plant will experience
a natural dormant period and should be kept cold (-10-+10oC)
and watering should be reduced until the soil is just moist.
Some or all of ther pitchers will diee back - this is no cause
for concern, and is entirely natrual as nutrients are drawn
down into the rhizome. Dead pitchers may be removed to discourage
mould or disease.
New
growth will resume in the Spring when warm conditions are restored,
and healthy plants which have undergone good dormancy conditions
will flower in March-May.
Many
species are fully hardy in the UK and suitable for growing
outdoors all year round as pond marginals, etc., but all benefit
from some protection from gales and will resume growth sooner
if protected from heavy frosts. An unheated greenhouse or garage
is ideal, and lighting may be reduced while the plant is dormant.
Watch out for mould in the winter if the plants are kept in
a warm or badly ventilated environment, and treat with a non-
copper-based systemic fungicide if necessary.
Plants
may be repotted every 2-3 years, and mature rhizomes with several
growth points can be divided with a sharp knife in February-March
and potted up separately.
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Drosera species - Sundews
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Stand
in 1/2 - 1 inch water (rainwater or boiled and cooled tapwater
ideally) through the summer in full sun (a south-facing windowsill
is ideal).
Reduce
watering in the winter months (October-March), when growth
will slow, but a cold dormancy is not necessary for most species.
Most
species will flower profusely in the Spring and Summer, producing
copious quantities of fine seed which may be sown on a mixture
of 2 parts peat to 1 part coarse sand standing in water just
like the parent plant.
May
be fed occasionally with fish food flakes or powder if no insects
are available in the growing position.
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Pinguicula species - Butterworts
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For
Mexican species, keep soil damp but do not stand in water.
Keep warm and protect from full sun (a north-facing windowsill
is ideal, or shade them with a taller plant).
In
the winter allow soil to dry out almost completely and mist
the plants lightly occasionally.
Profuse
fllowers are produced by most species through the Spring and
Summer. May be fed occasionally with fish food flakes or powder
if no insects are available in its growing position.
North
American species enjoy a wetter peaty habit - cultivation as for
Dionaea muscipula, with which they often grow in the wild.
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Cephalotus follicularis - Albany Pitcher Plant
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Stand
in 1/2 - 1 inch water (rainwater or boiled and cooled tapwater
ideally) through the summer in full sun to half shade. Allow
water tray to dry out before refilling.
In
winter reduce water to keep the soil just damp, and keep frost-free
as this species does not go dormant. A sunny windowsill is
often ideal for this species, which allowing for adequate water,
thrives on neglect.
If
repotting/dividing, do not tip plant - the pitchers will shrivel
if they are emptied (even if immediately refilled). The roots are
very delicate, so take care not to disturb them. Use a soil of
equal parts of peat, coarse sand and perlite.
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Nepenthes species - Asian Pitcher Plants
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Keep
well-watered but do not stand in water. Stand in a bright position
but protected from scorching sun. All Nepenthes species are
tropical rainforest plants, so keep warm and humid - mist regularly
and avoid placing near radiators or dehumidifiers.
These
plants often do well in a kitchen or bathroom where regular
humidity "pulses" can be relied on from cooking/running
hot water, in a conservatory with ferns, banana palms and other
tropical species, or in a dedicated terrarium or converted
aquarium.If
leaves fall to pitchers or pitchers soon wither, raise humidity.
Most
species grow into extremely long vines in time, but can be
pruned back when too long, and this promotes new basal growth.
Cuttings can be rooted in orchid bark or water if kept warm
and sealed in a plastic bag until roots have formed. Use a
soil of equal parts of peat, perlite and orchid bark for repotting
and for rooted cuttings.
If
no flies are available in the growing position, a light foliar
feed may be applied (half strength) once a month through the summer.
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Triffid
Nurseries, Great Hallows, Church Lane, Stoke Ash, Suffolk IP23 7ET
Carnivorous
Plants
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