generally like bright light without much direct sun. About
50% sun or dappled shade is good. Plant
lights often work well if they are broad spectrum and are kept just
far enough away to prevent overheating or scorching. Thin, spindly plants
or poor coloration are a sign of too weak a light. Sunburn usually appears
as red or dead zones on the upper most growth, facing the sun or light.
Water: Do not allow Nepenthes to dry
out completely. They benefit from moist media and occasional
flooding to wash away any accumulated salts. Use relatively
clean water such as rain, distilled or purified water.
Tap water can be used in many localities if the water
is low in salts. Low levels of chlorine do not seem to
be a problem.
Humidity: While Nepenthes often tolerate
low humidity, they usually stop making pitchers. Humid
environments such as greenhouses, terrariums or even
tents made from sticks and clear plastic bags can provide
the needed humidity. Be sure to provide some ventilation
to prevent overheating and stagnant air. Many people
put their plants outdoors during warm, humid weather.
Some shade must be provided and bring the plant(s) indoors
before temperatures drop below 50°F.
Temperature: Most types thrive at temperatures
between 55-95°F. Highland species such prefer cool
nights near 55-60°F and days around 70-85°F.
The lowland types are more tolerant of warmer conditions
and usually are easier to grow.
Planting Mixes: There are many porous,
low-fertility mixes that work. These contain tree fern
fiber, chopped fir bark, long fiber sphagnum moss, peat
moss and perlite. The media should be well drained and
open enough so air reaches the roots. A common
mix you can make yourself is long-fiber sphagnum
with about 40% perlite mixed in. Combinations of the
above ingredients also work well. Repot if the media
breaks down, the plant dries out too quickly, or plant
size indicates a bigger pot. Do not use clay pots, as
salts tend to build up in them.
Feeding: If you are growing the plant
where it cannot catch insects for long periods, you can
add an occasional small insect such as a fly, a cockroach
or a few very small insects to mature pitchers. This
is not normally needed. Many types benefit from 1/8 teaspoon
of Miracid™ fertilizer per quart of water, this
solution should be added only to the pitchers until they
are 3/4 filled.