Chinese Evergreen Care: Aglaonema Light and Water
Chinese evergreen (Aglaonema) wants bright, indirect light but tolerates low light better than nearly any houseplant, water only when the top 1 to 2 inches of soil are dry, and a room that stays between 65°F and 80°F and never drops below 60°F. Do those three things and it lives for years with almost no attention. The plant is toxic to cats and dogs, and the darker green varieties handle dim rooms better than the pink and silver ones.
That's the whole of chinese evergreen care in one paragraph. The rest of this page is about the edges: how low is too low for light, why leaves yellow, how to catch root rot early, and how to make more plants from the one you have.
Not sure if it's thirsty or drowning? Use our free watering guide for the container lift test and a symptom table that tells overwatering from underwatering.
Updated September 2026
Aglaonema Low Light: How Dim Is Too Dim?
Aglaonema grows on the floor of tropical forests in Southeast Asia, under a full canopy, which is why it puts up with the corner of an office or a north-facing bedroom that would kill a croton in a month. But "low light tolerant" is not "no light," and the difference matters.
A practical test: at midday, with the lamps off, can you read a book comfortably where the plant sits? If yes, that's enough for a dark green Aglaonema to hold its own indefinitely. If you'd reach for a lamp, the plant is surviving rather than growing, and after a few months you'll see the signs.
| Light level | What it looks like | Which Aglaonema | What happens over time |
|---|---|---|---|
| Bright indirect | Within 3 feet of an east window, or set back 4 to 6 feet from a south or west window, no direct sun on the leaves | All types, and the only spot where pink and red varieties keep their color | Steady growth, new leaf every few weeks in summer, occasional flowers |
| Medium | A north window, or 6 to 10 feet from an east window | Dark green and silver types | Slow, healthy growth, fewer new leaves |
| Low | Across the room from any window, a hallway with borrowed light, an office under fluorescent tubes | Dark green types only ('Maria', 'Emerald Bay', A. modestum) | Holds for months, then stretches, and the soil stays wet too long |
| Direct sun | Leaves in a sunbeam for more than an hour | None | Bleached patches and scorched brown edges within days |
Two things go wrong in genuinely low light, and neither is the plant dying of darkness. First, it stops using water, so the soil stays wet for weeks and the roots rot. Almost every "my Aglaonema died in the dark corner" story is a drowning. Second, new leaves come in smaller and paler and the stems lean and stretch toward whatever light there is.
The fix for a plant in a dim spot is not necessarily to move it. Cut the watering way back, rotate the pot a quarter turn every week or two so it doesn't lean, and give it a month of holiday in a brighter room each year if you can. A plant that spends winter in a dark hallway and summer near a window does fine.
Direct sun is the one thing it can't take. An hour of afternoon sun through west-facing glass will bleach the leaves in a single day, and the damage doesn't heal. Sheer curtains solve it.
Variegated vs Dark Varieties: Matching the Plant to the Room
Aglaonema breeding in the last twenty years has produced dozens of pink, red, cream and silver cultivars, and they're the ones on display at the store. They need noticeably more light than the plain green types, for the simple reason that pale and pink leaf tissue has less chlorophyll and makes less food. Put a 'Siam Aurora' in a dim office and it fades to a muddy green within a few months and stops growing. The same spot suits a 'Maria' perfectly.
| Variety | Leaf | Light it needs | Good for |
|---|---|---|---|
| Aglaonema modestum (the original) | Plain glossy green | Low to medium | The darkest spots, offices |
| 'Maria' | Dark green with faint silver bars | Low to medium | Hallways, north rooms |
| 'Emerald Bay' | Dark green with silver center | Low to medium | Dim corners |
| 'Silver Bay' | Silver-gray center, green edge | Medium to bright indirect | The standard big floor plant, most forgiving of the silvers |
| 'Silver Queen' | Heavily silver-marked, narrower leaf | Medium to bright indirect | Bright rooms, fades in low light |
| 'Siam Aurora' / 'Red Aglaonema' | Green with red veins and edges | Bright indirect | East windows |
| 'Pink Dalmatian' | Dark green speckled pink | Bright indirect | A bright living room |
| 'Lady Valentine' | Mostly pink | Bright indirect, the most light-hungry | Near an east window only |
The rule of thumb: the more color, the more light. If you want a plant for a dark spot, buy the boring green one. It's the better plant for the job, and it's usually cheaper.
Chinese Evergreen Care: Watering and Root Rot
Overwatering kills more Aglaonema than everything else combined. The plant has thick, fleshy stems and roots that store water, and it would rather be a little dry than a little wet.
How to water it:
- Push a finger into the soil. In a 6 inch pot, water when the top 1 to 2 inches feel dry. In a 10 inch or larger pot, wait until the top 2 to 3 inches are dry.
- Water slowly at the soil surface until it runs freely from the drain holes. That full soak wets the whole root ball. A splash on top wets an inch and leaves the roots dry.
- Let it drain for 15 minutes, then empty the saucer or cachepot. Never let the pot stand in water.
- Use room temperature water. Cold water from the tap shocks the roots.
The watering guide has the lift test, which is the best trick for houseplants: lift the pot right after a thorough watering, then again a few days later. The difference in weight tells you more than any calendar. Once you know what "light" feels like, you'll water by feel and get it right every time.
A worked example. A 'Silver Bay' in a 6 inch nursery pot, in a 70°F living room, 5 feet from an east window, in an ordinary peat-based potting mix, typically needs a full watering every 7 to 10 days from spring through early fall. The same plant across the room in low light stretches that to 2 to 3 weeks. In winter, even in the bright spot, growth slows and the interval lengthens to 10 to 14 days, though a pot right beside a heat vent may dry faster because the air is so dry. That's why the finger test beats a schedule: the same plant can need water every week in June and every two and a half weeks in January.
Water quality. Aglaonema is one of the houseplants that reacts to fluoride and chlorine with brown leaf tips and edges. If your tips brown despite good watering, let tap water sit out overnight before using it, or switch to filtered or rain water. Fluoride doesn't evaporate, so if that's the problem, filtered water is the real fix.
Humidity. It's happy at normal indoor humidity but happier at 50 percent or more. In winter, when forced-air heat drops a house into the 20s, group it with other plants or set the pot on a tray of pebbles with water below the pebble line. Misting does very little.
Catching root rot early. Root rot starts below the surface, so you see the symptoms above ground after the damage has begun. Watch for this combination:
- Lower leaves turning yellow and then brown at the same time the soil is still wet a week after watering
- A soft, dark, mushy area at the base of a stem
- A sour or swampy smell from the pot
- The whole plant wilting even though the soil is wet
If you see two of those, unpot the plant. Healthy roots are firm and white or pale tan. Rotted roots are brown, soft, and slip off the core when pulled. Trim every rotted root with clean scissors, cut off any mushy stem sections to healthy tissue, and repot in fresh, fast-draining mix in a pot with drain holes, ideally one size smaller if you removed a lot of roots. Water once, then not again until the top 2 inches are dry. Recovery isn't guaranteed, but caught at the yellow-leaves stage, most plants pull through.
The best prevention is the potting mix. A standard peat-based houseplant mix holds too much water for Aglaonema in low light. Blend in about a third by volume of perlite or orchid bark so it drains fast. Our container gardening guide explains why garden soil is never the answer for any pot.
Temperature and Drafts: The Winter Problem
Aglaonema is genuinely tropical, and cold is its second-biggest killer after overwatering. It's comfortable from 65°F to 80°F. Below 60°F it sulks, and a few hours below about 50°F causes chill damage: greasy-looking dark patches on the leaves that turn brown and papery a few days later.
That shows up in winter from sources you don't think of:
- Window glass. A pane on a January night is far colder than the room. Leaves touching the glass get damaged. Keep the plant a hand's width off the window.
- Drafts from doors. An Aglaonema in an entry hall catches a blast of freezing air every time the door opens.
- Heat vents. The opposite problem, hot dry air that crisps leaf edges and dries the pot unpredictably. Move it out of the airflow.
- The trip home. A plant carried across a parking lot in 30°F weather can drop leaves a week later, when you've forgotten the cause. Ask for a sleeve and get it into the car fast.
The same cold-hit logic applies to every tropical houseplant that comes home in December. Our pages on poinsettia care and Christmas cactus care cover the same trap for those two, and the fixes are identical: bright, warm, away from doors and vents.
Chinese Evergreen Yellow Leaves: Reading the Cause
Yellow leaves are the plant's only real way to complain, and they mean different things depending on which leaves, how fast, and what the soil is doing.
| What you see | Most likely cause | What to do |
|---|---|---|
| One of the oldest, lowest leaves yellows and drops, everything else looks fine | Normal aging | Nothing. Pull the leaf off when it comes away easily. |
| Several lower leaves yellow at once, soil still wet days after watering | Overwatering, root rot starting | Stop watering, check the roots, repot if any are mushy |
| Leaves yellow and limp, soil bone dry and pulled away from the pot wall | Underwatering | Soak the pot in a sink of water for 20 minutes, then drain, and check sooner next time |
| Pale or bleached yellow patches on the side facing a window | Too much direct sun | Move it back or add a sheer curtain |
| Dark greasy patches that turn yellow then brown | Cold damage | Move away from glass and drafts; damaged leaves won't recover, new ones will be fine |
| Brown tips and edges, otherwise green | Fluoride or chlorine in tap water, or very dry air | Filtered water, raise humidity |
| Yellow stippling, fine webbing under the leaves | Spider mites | See our spider mite guide for the water-first fix |
| White cottony tufts in the leaf joints | Mealybugs | Dab each one with rubbing alcohol on a cotton swab, repeat weekly |
| New leaves small and pale, plant hasn't been repotted in years | Root bound or hungry | Repot in spring, start feeding |
One cause is easy to overlook: the plant has simply outgrown its pot. If roots are circling the surface or poking out the drain holes, and water runs straight through without soaking in, repot before you do anything else.
Feeding, Repotting, and Pruning
Feeding. Aglaonema is a light feeder. A balanced liquid houseplant fertilizer at half the label strength once a month from March through September is plenty. Skip it entirely from October through February, when the plant isn't growing. Overfeeding shows as brown leaf edges and a white crust on the soil surface; if you see the crust, flush the pot with plain water until it runs clear a few times.
Repotting. Every two to three years, in spring, into a pot one size larger, 1 to 2 inches wider than the old one. Bigger than that and the extra soil stays wet too long. Use a fresh, fast-draining mix with perlite or bark added. Aglaonema doesn't mind being slightly root bound, so don't rush this.
Pruning. Older plants get leggy, with bare stems and a tuft of leaves at the top. Cut the tall stems back to 2 to 3 inches above the soil in spring. New shoots push from the base within a few weeks, and the cut tops can be rooted as cuttings, as covered below. Also cut off the flowers. Aglaonema produces a small green spathe like a peace lily's, and it's not worth the energy; removing it keeps the leaves coming.
Is Chinese Evergreen Toxic to Cats and Dogs?
Yes. The ASPCA's animal poison control listing marks Chinese evergreen (Aglaonema modestum) as toxic to dogs, cats, and horses. The toxic principle is insoluble calcium oxalates, and the listed signs are oral irritation, pain and swelling of the mouth, tongue and lips, excessive drooling, vomiting, and difficulty swallowing.
Here's what that means in practice. Insoluble calcium oxalates are microscopic needle-shaped crystals in the plant's tissue. When a pet bites a leaf, the crystals jab the mouth and throat, which is immediately painful. That pain usually stops the animal after one or two bites, which is why serious poisonings are uncommon. But the swelling can be significant, and in a rare case it can interfere with breathing, so a pet that has chewed the plant and is drooling or pawing at its mouth should be seen by a vet. The same crystals are in pothos, philodendron, dieffenbachia, peace lily, and monstera, so if you've got a chewer, the whole group is a problem.
For people, the sap can irritate skin and the same crystals make chewing a leaf painful, so keep it out of reach of toddlers and wash your hands after pruning or taking cuttings.
If you want a low-light plant that the ASPCA lists as non-toxic, the parlor palm (Chamaedorea elegans) and the cast iron plant (Aspidistra) both handle similar conditions.
Chinese Evergreen Propagation: Three Ways
Aglaonema is easy to multiply, and the best time is spring or early summer when it's actively growing.
Division (easiest, and the best result). Most Aglaonema in a pot for a few years are actually several stems, each with its own roots.
- Unpot the plant and gently tease the root ball apart into clumps, each with at least two or three stems and a fair share of roots.
- Cut through any stubborn connections with a clean knife.
- Pot each clump in fresh mix in a pot just big enough for it, water once, and keep it in medium light out of any sun for a couple of weeks while it settles.
Stem cuttings (for leggy plants).
- Cut a stem section 4 to 6 inches long with at least one node, the ring where a leaf was attached. The leafy top of a tall stem is ideal.
- Remove the lower leaves so the bottom 2 inches are bare.
- Root it either in a glass of water, changed weekly, or in a small pot of moist perlite-and-peat mix.
- Keep it warm, 70°F to 75°F, in bright indirect light. Roots take 3 to 6 weeks in water, a little longer in mix. Pot up water-rooted cuttings once the roots are an inch or two long.
Air layering (for a tall bare stem you don't want to cut yet). Make a shallow upward cut a third of the way into the stem below the leafy top, wedge it open with a toothpick, wrap it in damp sphagnum moss and then plastic wrap, and wait 4 to 8 weeks for roots to fill the moss. Then cut below the roots and pot it up. The old stem below sprouts fresh growth.
Whichever method, wear gloves or wash up afterward, since the sap carries the same oxalate crystals that make the plant unsafe for pets.
Frequently Asked Questions
How often should I water a Chinese evergreen?
When the top 1 to 2 inches of soil are dry, which for a 6 inch pot in an average room is roughly every 7 to 10 days in the growing season and every 10 to 14 days in winter. In low light it can be 2 to 3 weeks. Always water thoroughly until it drains, then let it drain and empty the saucer. Never keep it on a schedule; check the soil.
Can Chinese evergreen live in a room with no windows?
Not indefinitely. A dark green variety holds its looks for months under office fluorescent lighting that's on all day, but in a truly dark room with no daylight and lights off most of the time, it declines. If you want one in a windowless space, give it a few weeks near a window every couple of months, and water very sparingly in between.
Why are my Chinese evergreen leaves turning yellow?
The most common cause is overwatering, especially in low light where the soil stays wet for weeks. Check whether the soil is still damp a week after watering. If it is, let it dry out and consider repotting in a faster-draining mix. A single old bottom leaf yellowing now and then is normal aging and needs no action.
Is Chinese evergreen toxic to cats?
Yes. The ASPCA lists Aglaonema as toxic to cats, dogs, and horses because of insoluble calcium oxalate crystals, which cause mouth pain, swelling, drooling, and vomiting. Serious poisonings are rare because the pain stops most animals after a bite, but a pet showing symptoms should see a vet. Keep it out of reach or choose a non-toxic plant.
What temperature does an Aglaonema need?
65°F to 80°F is ideal, and it should never sit below 60°F for long. Chill damage, which shows as dark greasy patches that turn brown, starts after a few hours around 50°F. Keep it off cold window glass and out of drafts from doors and away from heat vents.
How do I propagate a Chinese evergreen?
Division is easiest: unpot a mature plant in spring and separate it into clumps with roots, then pot each one. For a leggy plant, take 4 to 6 inch stem cuttings with a node and root them in water or moist mix at 70°F to 75°F. Roots form in 3 to 6 weeks.
Should I cut the flowers off my Chinese evergreen?
Yes. The small green spathe isn't ornamental, and it takes energy from leaf production, which is the whole point of the plant. Snip it off at the base as soon as you notice it.
Do the pink and red Aglaonema need more light than green ones?
Yes, noticeably more. Pink, red, and cream leaf tissue has less chlorophyll, so those varieties need bright indirect light, such as a spot near an east window, to keep their color and keep growing. In a dim room they fade toward green and stall. For low light, choose a dark green variety like 'Maria' or 'Emerald Bay'.
