Light
Bright, indirect
Ideal spot
Epiphyllum oxypetalum 'Queen of the Night' · Trailing plant · pet-safe
Bright, indirect
Ideal spot
about weekly
In the growing season
Moderate
Slow grower
Safe
Cats & dogs
Queen of the Night (Epiphyllum oxypetalum 'Queen of the Night') belongs to the Cactaceae family and is a moderate houseplant to look after. This slow grower plant is happiest in bright, indirect and reaches 40–120 cm indoors.
For watering, the rule is simple: let the top dry out. In the growing season it needs water roughly every 8 days, dropping to every 16 days in winter. Use the watering calculator below to tune that rhythm to your pot size, light and household humidity.
Good news for pet owners: Queen of the Night is listed as non-toxic to cats and dogs by the ASPCA.
Set your pot size, light and humidity — the calculator tunes the watering rhythm to your home.
Light at the spot
Humidity
Season
Water Queen of the Night
every 8 days
≈ about weekly · 3.8× per month
Let the top 2–3 cm dry and finger-check before watering again.
Queen of the Night prefers bright, indirect but will cope with medium, indirect. Harsh midday sun can scorch sensitive leaves, while too little light leads to leggy, sparse growth.
Keep Queen of the Night between 15–32 °C and aim for around 55% humidity (45% minimum). Below 5 °C it risks cold damage — keep it away from draughty windows and radiators.
15–32 °C
Not below 5 °C
55%
45% minimum
Let the top dry out
Soil between waterings
Pot Queen of the Night in bark-rich, free-draining epiphyte mix. A drainage hole is essential — soggy, airless soil is the single most common way houseplants die.
Listed as non-toxic to cats and dogs by the ASPCA — a genuinely pet-safe choice.
The best ways to propagate Queen of the Night are offsets / pups, stem cuttings and seed. Late spring and summer are ideal, when the plant is growing most actively.
The Queen of the Night blooms just one night a year — its huge fragrant white flowers open after dark and wilt by sunrise.
In the growing season Queen of the Night needs watering about weekly (about every 8 days in a 16 cm pot at medium light), and much less in winter — roughly every 16 days. Use the watering calculator above to get the exact interval for your conditions.
Queen of the Night thrives in bright, indirect. A spot near a bright window out of harsh midday sun is ideal; give it a little more light in winter.
Queen of the Night is non-toxic to pets. Listed as non-toxic to cats and dogs by the ASPCA — a genuinely pet-safe choice.
The most common problem with Queen of the Night is root rot from overwatering. Check your watering and drainage first — most issues trace back to too much or too little water.
The best ways to propagate Queen of the Night are offsets / pups, stem cuttings and seed. Late spring and summer are ideal, when the plant is growing most actively.
Indoors Queen of the Night typically reaches 40–120 cm. With the right light and occasional repotting it stays compact and bushy.
Care data last verified on 15 June 2026.
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