Dionaea is a single-species genus, native only to a small area of coastal North and South Carolina in nutrient-poor, boggy soil. Non-toxic to cats and dogs, but genuinely fussy about water quality in a way most houseplants are not.
Care
Ideal — Bright to Direct Sun
Light
Low
Medium
Ideal — High, Keep Constantly Damp (Distilled Water Only)
Water
Drought
Regular
High
Frequent
Bright
Full Sun
Description
The archetypal carnivorous plant — hinged, tooth-fringed traps snap shut on triggering hairs when an insect brushes against them, then the plant digests it over the following days. Evolved in nutrient-poor bog soil, using carnivory to obtain nitrogen and phosphorus the soil can't provide. Individual traps turn black and die naturally after a few closures; this is normal, not a sign of poor care, and new traps continuously replace them. Cultivars selected for redder trap colour ('Red Dragon', 'Red Piranha') are more intensely coloured in bright light but otherwise share identical care.
Detailed Care
Water qualityOnly distilled water, rainwater, or reverse-osmosis water. Tap water — even filtered or bottled — contains enough dissolved minerals to kill the plant over time.
Watering methodKeep the soil constantly damp; the tray method (standing the pot in a shallow dish of water) is standard practice for this species.
SoilA specific low-nutrient mix — roughly half peat moss and half coarse horticultural sand. Standard potting soil contains far too many nutrients and will harm the plant.
FeedingDo not feed it hamburger, cheese, or other human food — it needs live or freshly killed insects occasionally, and healthy plants kept outdoors or near an open window in summer will catch enough on their own.
Cause of DeathTap water mineral buildup is the single most common cause of decline, followed by manually triggering traps repeatedly out of curiosity — each trap has a limited number of closures before it dies.
Toxicity
CatsSafe
DogsSafe
BirdsNo data
RodentsNo data
ReptilesNo data
Non-toxic to cats and dogs — contains no systemic poisons. The main risk to pets is mechanical: the rigid traps can pose a minor choking hazard if swallowed whole, and cat saliva introduces bacteria that can rot and kill an individual trap within days if repeatedly licked or bitten.