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Utricularia longifolia is from Southest Bresil, Rio de
Janeiro State growing at sea level, up to1000 meters. A
large robust perennial terrestrial. One of the easiest
epiphytes to grow.
Produces long narrow leaves up to 35 cm long and 3 cm
wide. It has the largest leaves in the genus. The leaves
of Utricularia longifolia can reach rarely a meter in
length. Lovely mauve flowers with golden blotch produced
over a long period. It flowers up to an inch across.
The bladder-trap is unique to the Utricularia, giving
them their nickname of Bladderworts. Utricularia has no
true root system. They form creeping or floating, thin,
hair-like stems that extended away from the main body of
the plant. The bladder-traps are held on these stems.
Most of the traps are underground and are too small to
hand feed. So, it has to catch it's own microscopic prey.
Thin, filament-like hairs protrude from the trap door.
These serve as guides to send the prey toward the door.
These plants use low pressure inside the chamber vs. high
pressure outside. When a bug activates the hairs, the
door opens quickly, forcing the victim into the low-pressure
digestion area. The water is pumped out and the mulcilage
seal is re-established. The plant now secrets digestive
juices to break down the captured prey and absorb the
mineral rich fluid. Trapping usually occurs within 1/50
of a second. It is believed that glands found around the
closed entry may also secrete an attractant that may aid
in luring prey.
Hardiness zone 11, (4°C/40°F) in Winter. This plant is
grown in pure live sphagnum, you can also use one part
live sphagnum moss for one part perlite. Grow in bright
to diffused light with a temperature of 15-20°C in
Winter and 20-35 °C in Summer. Utricularia make
excellent additions to any terrarium or bright window
sill. Epiphytic Utricularia prefer frequent overhead
watering, at least once a day in Summer, and once every
few days in Winter. To overcome dry periods, some of the
species such as Utricularia longifolia, have tubes in
which they are able to store moisture. Like other
carnivorous plants, they do require pure water and can be
killed by fertilizer in the soil.
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