A bird of paradise (Strelitzia reginae) needs three to four hours of direct sun a day indoors, according to the New York Botanical Garden, and a cool, bright winter rest at about 55°F. In a dim room it won’t die quickly. It stops flowering, its leaves weaken, and it declines slowly.
So bird of paradise care is mostly a question of sun. The rest is simple: water when the top inch of soil is dry, keep humidity above 50%, feed only while it grows, and keep it away from pets, since the ASPCA lists it as toxic to cats, dogs and horses.
Bird of paradise care starts with sun
Give a bird of paradise the sunniest window you have. The NYBG Mertz Library guide asks for three to four hours of direct sunlight near a south-facing window with the blinds open, or a spot directly in a very bright, unobstructed east-facing window.
NC State Extension lists its exposure as full sun or partial shade and describes the indoor spot as “well-lit, sunny.” University of Missouri Extension (publication G6515, 2017 revision) says south windows suit plants that need bright light and some direct sun, while north windows suit only low-light plants. A bird of paradise belongs in the first group.
Afternoon sun is the one exception. NYBG says to shield the plant from hot afternoon rays to avoid sunburn, which takes care at a west window, and in high summer a sheer curtain or a step back of a foot or two from the glass. Turn the pot a quarter turn each time you water so every leaf gets its share.
What happens without enough light
A bird of paradise kept in too little light makes no flowers and no strong framework of leaves, NYBG says, and a long stretch of not-quite-enough light is the most common reason the plant weakens.
Here is roughly how it goes, from the sources that describe it:
- No flowers. NYBG puts the first bloom at about five years old and only in the best conditions. In low light it never gets there.
- Stretching toward the window. MU Extension lists long gaps between leaves, smaller new leaves and pale growth as general signs of low light. Owners of indoor plants describe it as tall stalks leaning toward the glass, as in the Reddit thread below.
- Weak, floppy leaves. NYBG says the plant “weakens if it does not receive bright sunlight daily” and that leaves turn lax and drooping without a winter rest, too.
- Lower leaves yellowing and dropping. MU lists this as another low-light sign.
A reply with 129 upvotes, under a Reddit thread about a three-year-old indoor plant that had shot up taller than its owner expected said the same thing in fewer words:
“Looks like it’s searching for more light. You can chop it back and put it in the sunniest window or grow lights during winter”
– r/plantclinic, June 2026 (129 upvotes)
Can a grow light make up the difference? Partly. MU Extension says high-light plants need at least 1,000 foot-candles, or about 20 watts of fluorescent light per square foot, from a fixture with three to four tubes, and calls these plants “less satisfactory” under home lights. The Reddit reply above suggests grow lights for winter, and that is the realistic use: help through the short months, not a replacement for a sunny window. The grow light guide covers how to size one. Measure first with a lux app and the DLI calculator if you’re unsure what your window gives.
If your brightest window faces north, skip this plant. The plants that cope with north windows will do better than a bird of paradise ever will there.
How often to water a bird of paradise
Water a bird of paradise when the top inch of potting mix is dry, and soak the whole root ball. NYBG uses tepid water in the morning and empties the saucer after 15 minutes so the roots never sit in run-off.
Frequency follows the season, not the calendar. NC State says to water freely in spring and summer and keep the plant drier in winter, and NYBG gives only enough water in fall and winter to keep the roots from drying out.
Browning or curling leaves can mean either problem. NYBG says they signal too little water, which happens when the soil dries out too far or when soggy soil has damaged the roots so badly that they can’t carry water up. Feel the soil before you add more.
Temperature, the winter rest and summers outside
While it grows, a bird of paradise is happy at 65 to 75°F by day and 55 to 60°F at night, NYBG says. From November through February it wants about 55°F day and night, with strong sun. Without that rest, NYBG warns, the plant gradually declines.
That cool winter rest is the hard part. NYBG admits that not many homes have a space where such a temperature drop is easy. A bright, cool sunroom is the obvious candidate. A warm living room keeps the plant alive, but it is one more reason it won’t bloom.
Summers outside help. NYBG moves the plant to part shade once night temperatures stay above 65°F, and brings it back in early fall when nights are 60 to 65°F, taking a week to shift it gradually each way. The week-long change and the part shade are what keep an indoor plant from scorching. UF/IFAS gives USDA zones 10 and 11 for growing it in the ground; anywhere colder, it stays in a pot that comes inside before frost.
Keep it away from heat vents, air conditioners and drafty doors, which NYBG says cause stress and set the plant back.
Humidity, repotting and feeding
NYBG wants humidity above 50%. A humidifier or a wet pebble tray helps, and a cheap hygrometer beside the plant tells you whether it’s working. There are more ideas in the guide to raising humidity indoors.
Repot young plants in early spring into a pot one or two sizes larger with a drainage hole. Older plants are different: NYBG says they may bloom more freely in a somewhat tight pot, so in years you don’t repot, scrape off about an inch of old mix and replace it. Dividing works, but NYBG notes divisions can take several years to flower again.
Feed a balanced houseplant fertilizer every two weeks during active growth, after a normal watering, and stop in fall and winter. More is not better. NYBG says excess fertilizer gives lush leaves at the expense of flowers and can burn spots on the leaves.
Why a bird of paradise won’t bloom
A bird of paradise won’t bloom when any part of its routine is missing, and NYBG names them: light, humidity, the winter rest and attention to repotting. Age is the other factor, since a young plant needs about five years before its first flower.
If yours is past that age and still hasn’t flowered, go through the list in order. Light comes first. After that, ask whether it had a cool winter, whether it is in a pot that’s far too big, and whether it gets fed so often that it puts everything into leaves.
Pests and pets
Mealybugs and scale are the common pests, on the stalks and where leaves meet. NYBG’s method is a cotton swab dipped in rubbing alcohol on each insect, then a wipe or rinse, repeated every ten days for a few weeks. NC State adds spider mites and notes that root rot follows overwatering.
The ASPCA lists bird of paradise flower as toxic to dogs, cats and horses. It causes mild nausea, vomiting and drowsiness, mainly from the fruit and seeds. The ASPCA also warns against confusing it with Caesalpinia gilliesii, a shrub sold under the same common name that is more dangerous. My cat Miso is the reason I look up every plant first, and the plant toxicity table has the ASPCA verdict for this one and 114 others.
Ellie Marsh
Houseplant grower who spent years in a north-facing apartment. Writes practical care guides for low light homes, checked against extension and botanical garden sources.
