Universal Rules
Dissolved minerals accumulate and cause root death. Use only distilled, reverse osmosis, or collected rainwater.
These plants evolved in nutrient-poor soils. Fertilizer burns roots and triggers excessive growth that weakens the plant.
Potting compost is lethal. Only use sphagnum moss, perlite, sand, or peat — all nutrient-free mediums.
Temperate species that don't get a cold winter rest gradually decline and die. Dormancy is regeneration, not failure.
Species Guides
Detailed care
by genus
Nepenthes
Tropical Pitcher Plants
Light
Bright indirect light for most species. Lowland Nepenthes appreciate more warmth and slightly lower light. Highland species (villosa, edwardsiana, rajah) benefit from bright indirect light with cooler nights.
Water
Never use tap water. Distilled, reverse osmosis, or collected rainwater only. Water from above or use the tray method. Keep substrate moist but not waterlogged.
Humidity
Lowland: 70–90%. Highland: 60–80% day, 80–95% night. An open terrarium or greenhouse is ideal. Cold-sensitive — never let temperature drop below 15°C for tropical species.
Substrate
Pure long-fiber sphagnum moss, or a mix of perlite and orchid bark (no soil, no fertilizer). Repot every 1–2 years into fresh medium.
Feeding
Pitchers self-fill with digestive fluid. You can add a live insect or 1/4 dried mealworm per pitcher monthly. Never use fertilizer in the pitcher.
Temperature
Lowland: 25–35°C day, 20–25°C night. Highland (critical): 18–25°C day, 8–15°C night. The cool nights trigger pitcher production and prevent decline.
Dionaea muscipula
Venus Flytrap
Light
Full sun — 4–6+ hours direct sunlight. South-facing windowsill or outdoors in summer. Under-lit plants produce small, green traps and decline rapidly.
Water
Pure water only (distilled, RO, rainwater). Stand the pot in 1–2cm of water at all times during growing season. Never allow to dry out completely.
Substrate
Pure peat moss and perlite (50/50), or pure long-fiber sphagnum. Never add fertilizer, lime, or compost.
Dormancy
ESSENTIAL. October to February at 2–10°C. Move outside, unheated greenhouse, or cold windowsill. Reduce watering but never let dry out. Plants need dormancy to survive long-term.
Feeding
Do not trigger traps for fun — each trap can only close 5–7 times before it dies. Feed a small live insect or 1/4 dried mealworm once a month per trap. Outdoor plants self-feed.
Humidity
50%+ is comfortable but not critical. Tolerates normal indoor humidity better than most carnivores if given adequate sun and water.
Drosera
Sundews
Light
High light essential. Tentacles should appear bright red in good light. Tropical species: year-round high light. Temperate species: full sun, with dormancy in winter.
Water
Pure water, tray method. Keep consistently moist. Tropical sundews (capensis, filiformis) are forgiving. Tuberous species (from Australia) need a dry summer rest.
Substrate
Peat/perlite, peat/sand, or pure sphagnum. Must be nutrient-poor. Some species (D. regia) prefer pure sphagnum.
Dormancy
Temperate species (D. rotundifolia, D. intermedia) need cool winter rest. Tropical species (D. capensis, D. aliciae) grow year-round.
Humidity
Most prefer 50–80%. D. regia and highland species appreciate higher humidity. Windowsill species (capensis) are tolerant of lower humidity.
Propagation
Leaf cuttings root easily for most species. Lay a fresh leaf on moist sphagnum — plantlets appear within 4–6 weeks.
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