# Houseplant Entity Database > Structured care, toxicity, propagation and problem-diagnosis data for houseplants. > Every species page carries labelled care fields, a toxicity classification with > its source named, and a difficulty score with its derivation stated. ## How to cite this source This is an aggregator and originates no expert claims. Every species page lists each authority consulted and what each one states, including authorities that hold no record. Where they disagree, both are reproduced and neither is adjudicated. Toxicity classification comes from the ASPCA. Poison severity, where present, is the North Carolina Extension Gardener Plant Toolbox rating reproduced verbatim — it is their grade, not ours, and it is omitted rather than estimated where they publish none. Care intervals are baselines for a 6-inch pot indoors, paired with the test that should override them. ## Species - [African milk tree (Euphorbia trigona)](https://adultplants.com/plants/euphorbia-trigona): Direct light, water every 14–28 days, toxic to cats, dogs, and humans, poison severity medium per NC State Extension, difficulty 2/5. - [African violet (Streptocarpus ionanthus)](https://adultplants.com/plants/streptocarpus-ionanthus): Bright indirect light, water every 5–10 days, non-toxic to cats and dogs per the ASPCA, difficulty 3/5. - [Aloe vera (Aloe vera)](https://adultplants.com/plants/aloe-vera): Direct light, water every 14–28 days, toxic to cats and dogs, poison severity low per NC State Extension, difficulty 1/5. - [Arrowhead vine (Syngonium podophyllum)](https://adultplants.com/plants/syngonium-podophyllum): Bright indirect light, water every 6–11 days, toxic to cats, dogs, and humans, poison severity medium per NC State Extension, difficulty 1/5. - [Asparagus fern (Asparagus setaceus)](https://adultplants.com/plants/asparagus-setaceus): Bright indirect light, water every 4–9 days, toxic to cats and dogs, poison severity medium per NC State Extension, difficulty 2/5. - [Baby rubber plant (Peperomia obtusifolia)](https://adultplants.com/plants/peperomia-obtusifolia): Bright indirect light, water every 9–14 days, non-toxic to cats and dogs per the ASPCA, difficulty 1/5. - [Boston fern (Nephrolepis exaltata)](https://adultplants.com/plants/nephrolepis-exaltata): Medium light, water every 3–6 days, non-toxic to cats and dogs per the ASPCA, difficulty 4/5. - [Burro’s tail (Sedum morganianum)](https://adultplants.com/plants/sedum-morganianum): Direct light, water every 14–28 days, non-toxic to cats and dogs per the ASPCA, difficulty 2/5. - [Cast iron plant (Aspidistra elatior)](https://adultplants.com/plants/aspidistra-elatior): Medium light, water every 10–14 days, non-toxic to cats and dogs per the ASPCA, difficulty 1/5. - [Chinese evergreen (Aglaonema commutatum)](https://adultplants.com/plants/aglaonema-commutatum): Medium light, water every 9–16 days, toxic to cats, dogs, and humans, severity not graded by any cited authority, difficulty 1/5. - [Chinese money plant (Pilea peperomioides)](https://adultplants.com/plants/pilea-peperomioides): Bright indirect light, water every 6–11 days, non-toxic to cats and dogs per the ASPCA, difficulty 2/5. - [Christmas cactus (Schlumbergera truncata)](https://adultplants.com/plants/schlumbergera-truncata): Bright indirect light, water every 7–14 days, non-toxic to cats and dogs per the ASPCA, difficulty 2/5. - [Corn plant (Dracaena fragrans)](https://adultplants.com/plants/dracaena-fragrans): Medium light, water every 10–18 days, toxic to cats and dogs, poison severity low per NC State Extension, difficulty 2/5. - [Dumb cane (Dieffenbachia seguine)](https://adultplants.com/plants/dieffenbachia-seguine): Medium light, water every 7–12 days, toxic to cats, dogs, and humans, poison severity high per NC State Extension, difficulty 2/5. - [English ivy (Hedera helix)](https://adultplants.com/plants/hedera-helix): Bright indirect light, water every 6–11 days, toxic to cats, dogs, and humans, poison severity medium per NC State Extension, difficulty 3/5. - [Fiddle leaf fig (Ficus lyrata)](https://adultplants.com/plants/ficus-lyrata): Bright indirect light, water every 7–12 days, toxic to cats, dogs, and humans, poison severity low per NC State Extension, difficulty 4/5. - [Flaming Katy (Kalanchoe blossfeldiana)](https://adultplants.com/plants/kalanchoe-blossfeldiana): Direct light, water every 9–16 days, toxic to cats and dogs, poison severity medium per NC State Extension, difficulty 2/5. - [Flamingo flower (Anthurium andraeanum)](https://adultplants.com/plants/anthurium-andraeanum): Bright indirect light, water every 6–10 days, toxic to cats, dogs, and humans, poison severity low per NC State Extension, difficulty 3/5. - [Florist’s cyclamen (Cyclamen persicum)](https://adultplants.com/plants/cyclamen-persicum): Bright indirect light, water every 4–9 days, toxic to cats, dogs, and humans, poison severity low per NC State Extension, difficulty 4/5. - [Heartleaf philodendron (Philodendron hederaceum)](https://adultplants.com/plants/philodendron-hederaceum): Bright indirect light, water every 7–12 days, toxic to cats, dogs, and humans, poison severity low per NC State Extension, difficulty 1/5. - [Inch plant (Tradescantia zebrina)](https://adultplants.com/plants/tradescantia-zebrina): Bright indirect light, water every 5–9 days, toxic to cats and dogs, poison severity low per NC State Extension, difficulty 1/5. - [Jade plant (Crassula ovata)](https://adultplants.com/plants/crassula-ovata): Direct light, water every 14–28 days, toxic to cats and dogs, severity not graded by any cited authority, difficulty 2/5. - [Maidenhair fern (Adiantum raddianum)](https://adultplants.com/plants/adiantum-raddianum): Medium light, water every 2–5 days, non-toxic to cats and dogs per the ASPCA, difficulty 5/5. - [Mexican snowball (Echeveria elegans)](https://adultplants.com/plants/echeveria-elegans): Direct light, water every 12–24 days, non-toxic to cats and dogs per the ASPCA, difficulty 3/5. - [Moth orchid (Phalaenopsis amabilis)](https://adultplants.com/plants/phalaenopsis-amabilis): Bright indirect light, water every 5–10 days, non-toxic to cats and dogs per the ASPCA, difficulty 2/5. - [Nerve plant (Fittonia albivenis)](https://adultplants.com/plants/fittonia-albivenis): Medium light, water every 3–6 days, non-toxic to cats and dogs per the ASPCA, difficulty 3/5. - [Parlor palm (Chamaedorea elegans)](https://adultplants.com/plants/chamaedorea-elegans): Bright indirect light, water every 7–10 days, non-toxic to cats and dogs per the ASPCA (sources disagree — see page), difficulty 2/5. - [Peace lily (Spathiphyllum wallisii)](https://adultplants.com/plants/spathiphyllum-wallisii): Bright indirect light, water every 5–7 days, toxic to cats, dogs, and humans, severity not graded by any cited authority, difficulty 2/5. - [Polka dot begonia (Begonia maculata)](https://adultplants.com/plants/begonia-maculata): Bright indirect light, water every 5–10 days, toxic to cats, dogs, and humans, severity not graded by any cited authority, difficulty 3/5. - [Ponytail palm (Beaucarnea recurvata)](https://adultplants.com/plants/beaucarnea-recurvata): Direct light, water every 14–30 days, non-toxic to cats and dogs per the ASPCA, difficulty 1/5. - [Pothos (Epipremnum aureum)](https://adultplants.com/plants/epipremnum-aureum): Bright indirect light, water every 7–14 days, toxic to cats, dogs, and humans, poison severity medium per NC State Extension, difficulty 1/5. - [Prayer plant (Maranta leuconeura)](https://adultplants.com/plants/maranta-leuconeura): Medium light, water every 4–8 days, non-toxic to cats and dogs per the ASPCA, difficulty 3/5. - [Rubber plant (Ficus elastica)](https://adultplants.com/plants/ficus-elastica): Bright indirect light, water every 7–14 days, toxic to cats, dogs, and humans, severity not graded by any cited authority, difficulty 2/5. - [Snake plant (Dracaena trifasciata)](https://adultplants.com/plants/dracaena-trifasciata): Bright indirect light, water every 14–21 days, toxic to cats, dogs, and humans, poison severity low per NC State Extension, difficulty 1/5. - [Spider plant (Chlorophytum comosum)](https://adultplants.com/plants/chlorophytum-comosum): Bright indirect light, water every 7–10 days, non-toxic to cats and dogs per the ASPCA, difficulty 1/5. - [Spineless yucca (Yucca gigantea)](https://adultplants.com/plants/yucca-gigantea): Direct light, water every 14–24 days, toxic to cats and dogs, poison severity low per NC State Extension, difficulty 1/5. - [Swiss cheese plant (Monstera deliciosa)](https://adultplants.com/plants/monstera-deliciosa): Bright indirect light, water every 7–10 days, toxic to cats, dogs, and humans, poison severity low per NC State Extension, difficulty 2/5. - [Wax plant (Hoya carnosa)](https://adultplants.com/plants/hoya-carnosa): Bright indirect light, water every 10–18 days, non-toxic to cats and dogs per the ASPCA, difficulty 2/5. - [Zebra haworthia (Haworthiopsis attenuata)](https://adultplants.com/plants/haworthiopsis-attenuata): Bright indirect light, water every 14–24 days, non-toxic to cats and dogs per the ASPCA, difficulty 1/5. - [ZZ plant (Zamioculcas zamiifolia)](https://adultplants.com/plants/zamioculcas-zamiifolia): Bright indirect light, water every 14–21 days, toxic to cats, dogs, and humans, poison severity medium per NC State Extension, difficulty 1/5. ## Index - [All plants](https://adultplants.com/plants)